Doug thorley tri y headers. 1967-1972 GM C10 PICKUP TRUCKS Headers - LS-SERIES MOTOR SWAP, 4.8L-6.2L - Doug Thorley: THY-323Y-C Be the first to review this product 1967-1972 GM C10 PICKUP TRUCKS Headers - LS-SERIES MOTOR SWAP, 4.8L - 6.2LFeb 21, 2022 · Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The Tri-Y 4:2:1 configuration builds the most power in the middle rpm range, which is great for towing and steep grades. Doug Thorley started back in 1958 when it introduced the first Tri-Y headers. The company specializes in creating performance headers and exhaust systems for the automotive industry. They offer kits for classic cars and modern vehicles as well.Doug Thorley TRI-Y Headers and Custom Dual Exhaust. There is just so much in this beast… and it is a F-ING BEAST. Sounds like Wyatt Earp Calling down the THUNDER. Owner wants this to go to someone who knows what went in to this and can appreciate how much time and effort went into making this beast perfect. Serious buyers only. Buy Doug Thorley Headers THY-563Y-LS-C Tri-Y Header Fits 05-09 4Runner GX470 at Walmart.com User manual | Doug Thorley Race Headers THY-560Y-L-C (RACE ONLY) TRI-Y HEADER SYSTEM TOYOTA TUNDRA, 5.7L, w/ AIR INJ., 2/4WD, 2007-08 PARTS INCLUDED Description 1) 2 ... User manual | Doug Thorley Race Headers THY-560Y-L-C (RACE ONLY) TRI-Y HEADER SYSTEM TOYOTA TUNDRA, 5.7L, w/ AIR INJ., 2/4WD, 2007-08 PARTS INCLUDED Description 1) 2 ... The Tri-Y configuration builds the most power in the middle RPM range, which is great for towing and steep grades. To make these headers last, Doug Thorley Headers made them out of durable 14-gauge mild steel with 3/8 in. thick flanges and 5/16 in. collector rings. To prevent leaks, these headers have an O-ring welded into the flange, in ... UPDATE: Price quote on the Doug Thorley headers was going to run me about $650 with shipping for the 364YSC. This is a Tri-Y with the four smog fittings on each side and ceramic coating. Called Doug's Headers and they confirmed that Doug is Doug Thorley. Got a part number from them and called their warehouse.Doug Thorley TRI-Y Headers and Custom Dual Exhaust. There is just so much in this beast… and it is a F-ING BEAST. Sounds like Wyatt Earp Calling down the THUNDER. Owner wants this to go to someone who knows what went in to this and can appreciate how much time and effort went into making this beast perfect. Serious buyers only. Doug Thorley HeadersCeramic Coated HeadersPart NumberHDX-6352000-2006 Jeep Cherokee / Rubicon / Wrangler TJ & YJ Series, 4.0L, 4WD, Dual Catdoesn't fit Grand CherokeeDescription:It's a proven, indisputable fact: Dollar for dollar, no other investment will increase power and performance like a set of Doug Thorley Headers!Doug Thorley Headers HDX-635 heavy duty 6:2 shortie headers deliver the ...Doug Thorley Headers has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958, and they do it all on American soil. As they move into a new office and manufacturing facility, they will be working to expand their product line, improve their production capabilities and continue to find new ways to ...Your next Doug Thorley Header is available in one of the following configurations: Tri-Y Headers: engineered to match firing sequences and minimize exhaust resistance. Maximum torque and power gains through 4500 RPMs, increased fuel economy. Shortie Headers: designed to fit vehicles with limited space under the hood.Driven by a passion for performance and superior quality, they are committed to developing 100% American-made products that will reliably deliver maximum horsepower and torque. Doug Thorley Headers® has been pushing the limits of automotive technology since they first invented the Tri-Y header in 1958, and they do it all on American soil. WarrantyGive Doug Thorley (Summit Industries/Jardine) a call in Corona CA. I last spoke with them in Riverside I think but I believe their stuff is made at that Corona facility. I have a set of their 289Y hybrid tri-Y's on my '68. Fit is excellent, even with a small block C6 (or scattershield).Doug Thorley Long Tube Tri-Y Headers with Y-Pipes Jeep Grand Cherokee WJ 1999-2004. $1,236.09. Buy in monthly payments with Affirm on orders over $50. Learn more. Doug Thorley Headers. Model #THY-637Y-C. Help me decide. Add to Cart. Description.Find Doug Thorley Tri-Y Headers Standard Flange Style and get Free Shipping on Orders Over $99 at Summit Racing! Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The Tri-Y 4:2:1 configuration builds the most power in the middle rpm range, which is ...tube turntablejuniper geode reviewDoug Thorley Headers THY-379Y-C Silver Tri-Y Header (1962-67 Chevy II/Nova, 265-400 Small Block (Aftermarket Front Clip With Front Steering), 1 Pack 5.0 out of 5 stars 1 $689.00 $ 689 . 00Buy Doug Thorley Headers THY-563Y-LS-C Tri-Y Header Fits 05-09 4Runner GX470 at Walmart.com LC headers looked good, but I Live in California so I need carb approved headers and I do have egr valve. Installed Doug Thorley tri-y part# THY-509Y-C a few weeks back. Website says for 2005-2015 2.7. Bought from AutoAnything on sale + extra discount for $377.88 total with free shipping. Great welds. Finish is shiny, but not chrome. Install ...By combining craftsmanship with devoted attention to details, they have created high quality headers for the hot rod scene. Your next Doug Thorley Header is available in one of the following configurations: Tri-Y Headers: engineered to match firing sequences and minimize exhaust resistance. Maximum torque and power gains through 4500 RPMs ...Long Tube Tri-Y Headers, 1999-04 Jeep Grand Cherokee WJ, 4.7L â€" Doug Thorley Headers 2004 Columbia Edition WJ 4.7 HO RB4/Moog HD Steering Stabilizer/ PML trans pan 10304 / Autometer trans temp & oil pressure gauge/UpCountry springs & OME 10MM Spacers/Bilstein shocks/Rubicon Moabs/255/65r17 Cooper Discoverer AT3/Factory chrome tow hooks ...1967-1972 GM C10 PICKUP TRUCKS Headers - LS-SERIES MOTOR SWAP, 4.8L-6.2L - Doug Thorley: THY-323Y-C Be the first to review this product 1967-1972 GM C10 PICKUP TRUCKS Headers - LS-SERIES MOTOR SWAP, 4.8L - 6.2L1973-1987 GM PICKUP TRUCKS, SUBURBAN, BLAZER/JIMMY Headers 1973-1987 Chevy C10 Doug Thorley Headers Doug Thorley: THY-300Y-C. Engine: 265-400; Features. TRI-Y HEADERS - WILL FIT ANGLE PLUG CYLINDER HEADS; MANUAL OR AUTOMATIC TRANSMISSION; MAY REQUIRE AIR CONDITIONER BRACKETTri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor across the widest RPM band possible. That is the beauty of the design and that is why they are the best street header available. This kit includes ceramic coated long tube tri-y headers and connector pipes, which will attach straight to your exhaust system. Doug Thorley Headers Performance Catalogs. As we near our 50th anniversary, our executive staff is extremely proud to announce that Doug Thorley Headers has amassed our greatest team ever. From our R & D department, engineering staff, marketing, sales staff, to our production team and shipping department.Find Doug Thorley Tri-Y Headers Standard Flange Style and get Free Shipping on Orders Over $99 at Summit Racing! Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The Tri-Y 4:2:1 configuration builds the most power in the middle rpm range, which is ...Doug Thorley TRI-Y Headers and Custom Dual Exhaust. There is just so much in this beast… and it is a F-ING BEAST. Sounds like Wyatt Earp Calling down the THUNDER. Owner wants this to go to someone who knows what went in to this and can appreciate how much time and effort went into making this beast perfect. Serious buyers only.This performance header system is a true Tri-Y design for maximum performance gain on your 2005-2015 Toyota Tacoma, 4Runner, Hilux, Prado, with the 2TR-FE 2.7L engine. Fits 2 and 4 wheel drive trucks Primary pipe size 1.5\" Collector is 2.25\" Compatible with stock air injection system Direct bolt on replacement, no cutting or welding needed […]22r Doug Thorley Tri-Y Header. Appearance. Ease of Installation. Price/Value. Quality. Reviewed by David G (Carrollton, TX) — 2008-11-24 07:37:49. The appearance and quality were good. The header tube material is thick - the header is heavy compared to most. The bolt up plate (where it bolts to the head) is solid and made thick to reduce warpage.Buy Doug Thorley Headers THY-563Y-LS-C Tri-Y Header Fits 05-09 4Runner GX470 at Walmart.com Hello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...del real foods costcoreining horse stallionsBy combining craftsmanship with devoted attention to details, they have created high quality headers for the hot rod scene. Your next Doug Thorley Header is available in one of the following configurations: Tri-Y Headers: engineered to match firing sequences and minimize exhaust resistance. Maximum torque and power gains through 4500 RPMs ...2.25″ Collector Diameter. Gaskets & Bolts NOT Included. Available on backorder. or as low as $23.57/mo with. More info. Purchase this product now and earn 879 G8Only Points! Doug Thorley Tri-Y 1 3/4 Long Tube Headers - Coated quantity. Add to cart. SKU: THY-333Y-C Categories: Headers, Exhaust Tags: ceramic, coated, doug thorley, headers. 22r Doug Thorley Tri-Y Header. Appearance. Ease of Installation. Price/Value. Quality. Reviewed by David G (Carrollton, TX) — 2008-11-24 07:37:49. The appearance and quality were good. The header tube material is thick - the header is heavy compared to most. The bolt up plate (where it bolts to the head) is solid and made thick to reduce warpage.Tri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor across the widest RPM band possible. That is the beauty of the design and that is why they are the best street header available. This kit includes ceramic coated long tube tri-y headers and connector pipes, which will attach straight to your exhaust system. 2008-2012 Pontiac G8 GT 6.0L-6.2L Long Tube Tri-Y Headers Just wonder if anyone has used these on their SS, for the price hard to beat being ceramic coated???? Has a smaller than 3 inch collector and bolts directly to the stock exhaust. The web site states they fit the 14 thru 15 SS sedan.Headers, Tri-Y, Steel, Ceramic Coated, Chevy, GMC, Car, Truck, Small Block, Pair Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. Just wondering if anyone is interested in buying a New set of Doug Thorley Headers for 5.2L & 5.9L ZJ. Let me know. 2012 WK2 Limited, 4x4, 5.7L Hemi, Mopar CAI, Flowmaster super 44'sTime-proven performance. Backed by 40-plus years of knowledge and experience, Thorley headers are designed to outflow your stock exhaust manifolds. These headers increase gas mileage and give your engine more horsepower across the entire rpm range. Their design configuration builds the most power across the rpm range, which is great for everything from street/strip performance, to towing, to ...In 1964 I bought a set of Doug's (Doug Thorley) Tri-Y headers for my 327 powered '55 Chevy gasser. Stock 365 horse short block, Mondello double humps, Chet Herbert #70 roller, Edelbrock cross ram with 2 500 cfm Holley's, 5:57 Pontiac rear with Henry's axles. Dump the clutch at 8,000 and power shift at 8,500, ran 11:20 at 121.Customer install with our custom Titanium Stud kit with Doug Thorley Headers & Y Pipe. We sell all these items on our website at great prices. www.burtmanind...Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals Email Report 65_Impala Very Senior Member Posts: 4887 Reg: 12-29-02. User Info. Send Private Topic View Profile. 07-17-21 08:31 PM - Post# 2823401 In response to 1983G20Van.Find 2004 GMC YUKON Headers Chrome Header Color and get Free Shipping on Orders Over $99 at Summit Racing!Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad revolutions per minute range, and more importantly the range where you use it most. Features 1-3/4 inch primaries. OFF ROAD / RACE USE ONLY . Doug Thorley Headers THY-123Y1-WRX Color/Finish: stainless ...Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: (800) 347-8664 Doug Thorley Headers 1280 Graphite Dr. Corona, CA 92881Hello.Id just like to say i just put on the doug thorley tri-y ceramic headers on my 5.7 Along with a voolant cold air intake.And gibson dual exhaust.Its Screams.And my gas milage is way better too.If you got a new tundra i suggest you open the engine up for all its worth first.The pretty crome and all can come later.I also added a 7 inch pioneer flip screen in the front and a 14 inch flipdown ...Features Doug Thorley Headers have been the cream of the performance exhaust crop since 1958 Custom-made for your vehicle from durable 14-gauge steel tubing for longevity and a precise fit Doug Thorley Headers are available for your vehicle in one of three header styles: Tri-Y Headers: Doug Thorley Tri-Y Headers feature unique engineering that properly matches your firing sequence, freeing ...open sharepoint file in excelflac cue splitter androidDoug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad revolutions per minute range, and more importantly the range where you use it most. Features 1-3/4 inch primaries. OFF ROAD / RACE USE ONLY . Doug Thorley Headers THY-123Y1-WRX Color/Finish: stainless ...Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad revolutions per minute range, and more importantly the range where you use it most. Features 1-3/4 inch primaries. OFF ROAD / RACE USE ONLY . Doug Thorley Headers THY-123Y1-WRX Color/Finish: stainless ...Feb 21, 2022 · Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The Tri-Y 4:2:1 configuration builds the most power in the middle rpm range, which is great for towing and steep grades. Normally Doug's headers are of good quality. If u got a 2wd I wouldn't hesitate to run them. May 27, 2019 #6 Tim Garceau Banned. Joined Jun 29, 2018 Posts 2,090 ... Doug Thorley Tri-Y Headers. clint440; Dec 14, 2019; Engine & Performance; 2 3 4. Replies 32 Views 7K. Mar 6, 2021. clint440. C. JBA Shorty Header Gasket. Wags68; May 27, 2020 ...A Doug Thorley Headers original design, the 4:2:1 collector specification on the Tri-Y Headers is engineered to match your engine's firing order and thereby maximize exhaust scavenging - the complete expulsion of gasses on the exhaust stroke.Doug Thorley HeadersCeramic Coated HeadersPart NumberHDX-6352000-2006 Jeep Cherokee / Rubicon / Wrangler TJ & YJ Series, 4.0L, 4WD, Dual Catdoesn't fit Grand CherokeeDescription:It's a proven, indisputable fact: Dollar for dollar, no other investment will increase power and performance like a set of Doug Thorley Headers!Doug Thorley Headers HDX-635 heavy duty 6:2 shortie headers deliver the ...Doug Thorley tri-y header. Selling my Doug Thorley tri-y header. This unit is the 542-YO that fit on my 85 toyota 22re. This is CA SMOG LEGAL and has the required EO#. Thorley's website says the applications are... 1981-1984 TRUCK, 20R/ 22R, 4WD, NO HILUX; 1981-1984 20R/ 22R, 2WD, NO 2WD IN 1980; 1984.5-1987 TRUCK/4RUNNER, 20R/ 22R, 2/4WD, FUEL ...Doug Thorley Tri-Y Headers Overview The Tri-Y design yields maximum power from idle to 4500 RPM, while adhering to strict emissions standards.Doug Thorley Long Tube Tri-Y Headers for Chevy/GMC, Dodge, Ford, Hummer, Jeep, Nissan, and Toyota are proudly made in the USA and backed by lifetime warranty. Features Long Tube Tri-Y Design Easy Installation Durable Ceramic Coating 14 Gauge Tubing Limited Lifetime Warranty Made in the U.S.A.Doug Thorley Long Tube Tri-Y Headers for Chevy/GMC, Dodge, Ford, Hummer, Jeep, Nissan, and Toyota are proudly made in the USA and backed by lifetime warranty. Features Long Tube Tri-Y Design Easy Installation Durable Ceramic Coating 14 Gauge Tubing Limited Lifetime Warranty Made in the U.S.A.Doug Thorley Tri Y headers for the SS. Jump to Latest Follow 81 - 91 of 91 Posts. Prev ... The sound output from the DT headers without any cats or 2ndary cats isn't loud at all even in sport mode with bimode exhaust. It's not raspy at all, is a little deeper tone but to me still very mild. Tour mode is practically the same as stock.tokyo revengers x nerd readerapoquel vs zyrtec for dogsCustomer install with our custom Titanium Stud kit with Doug Thorley Headers & Y Pipe. We sell all these items on our website at great prices. www.burtmanind...Doug Thorley Headers Performance Catalogs. As we near our 50th anniversary, our executive staff is extremely proud to announce that Doug Thorley Headers has amassed our greatest team ever. From our R & D department, engineering staff, marketing, sales staff, to our production team and shipping department.Used set of Doug Thorley THY-190Y tri-Y headers. They have a V band clamp, have been media blasted, ceramic painted and wrapped. They were on my 93 with a 408, but have switched to Hooker Super comps. They obviously will need modification to your stock exhaust due to adding the v band flange...Doug Thorley Headers Performance Catalogs. As we near our 50th anniversary, our executive staff is extremely proud to announce that Doug Thorley Headers has amassed our greatest team ever. From our R & D department, engineering staff, marketing, sales staff, to our production team and shipping department.Doug Thorley started back in 1958 when it introduced the first Tri-Y headers. The company specializes in creating performance headers and exhaust systems for the automotive industry. They offer kits for classic cars and modern vehicles as well.Doug Thorley HeadersCeramic Coated HeadersPart NumberHDX-6352000-2006 Jeep Cherokee / Rubicon / Wrangler TJ & YJ Series, 4.0L, 4WD, Dual Catdoesn't fit Grand CherokeeDescription:It's a proven, indisputable fact: Dollar for dollar, no other investment will increase power and performance like a set of Doug Thorley Headers!Doug Thorley Headers HDX-635 heavy duty 6:2 shortie headers deliver the ...Buy Doug Thorley Headers THY-563Y-LS-C Tri-Y Header Fits 05-09 4Runner GX470 at Walmart.com Jun 19, 2006 · I have a set of AFR 185 heads mounted atop my 331 Stroker in a 64 Falcon Sprint. The engine has been resting in the bay for some time now as I complete the final connections with wiring ect. I had ordered a set of ceramic coated Doug Thorley Tri'y's and am quite happy with the quality and the... About Doug Thorley Headers. History and information about Doug Thorley Headers and their products. DOUG THORLEY HEADERS, an "all American made" company, has been in business for 50 years producing some of the world's best headers.DOUG THORLEY HEADERS is world famous for the invention of the tri-y header and for ease of installation.Hello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...A Doug Thorley Headers original design, the 4:2:1 collector specification on the Tri-Y Headers is engineered to match your engine's firing order and thereby maximize exhaust scavenging - the complete expulsion of gasses on the exhaust stroke.Doug Thorley Headers was on three Speed Channel programs in 2006. We were on 2 (two) segments of Cut, Chop and Rebuild, and one segment of Street Tuners. They returned on May 30th,2007 to shoot another special program.Doug Thorley Headers THY-481Y-LS-C - Doug Thorley Tri-Y Headers Headers, Tri-Y, Long Tube, Stainless Steel, Silver Ceramic Coated, 2.25 in. Collector, Infiniti, 5.6L, Pair Part Number: DTE-481-YLSC Doug Thorley Headers THY-716Y-SS Tri-Y Header Fits 94-97 Tracker. $518.65. Free shipping Free shipping Free shipping. 16 Valve Suzuki SideKick Geo Tracker X90 Stainless Steel Header for 1.6L 16V. $350.00 + $15.00 shipping + $15.00 shipping + $15.00 shipping. FOR SAMURAI/GEO TRACKER T304 STAINLESS 4-2-1 FULL LENGTH EXHAUST MANIFOLD HEADER.However, the Doug Thorley short tube headers were designed in a tri-y configuration that works to maintain a constant power increase throughout the entire power band. This was a special concern when the headers were being designed given that the Tundra is heavier than most of the vehicles that the company typically builds headers for.Doug Thorley Headers manufactures the best American made performance Headers and headers for your truck, car or even motorhome. Contact us for pricing at: [email protected] Toll: (800) 347-8664 Doug Thorley Headers 1280 Graphite Dr. Corona, CA 92881bosch bmi055 imuaml8726 mx unbrickThe Tri-y headers are constructed with 14-gauge mild steel with 3/8 inch thick flanges and 5/16 in. collector rings. In addition to the high-temp Remflex gaskets provided, these headers have an o-ring welded into the flange to ensure a leak free seal! Don't forget about the cool sound these add to your rig!!!Hello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...1970-1987 Chevy MONTE CARLO 4to1 Headers 4:1 HEADERS 3/4 LENGTH HEADER FOR MAX GROUND CLEARANCE NOW FIT WITH FACTORY A/C Engine: 265-400 Doug Thorley: THY-380-C-MONTE CARLO Learn More Free Ground ShippingJun 19, 2006 · I have a set of AFR 185 heads mounted atop my 331 Stroker in a 64 Falcon Sprint. The engine has been resting in the bay for some time now as I complete the final connections with wiring ect. I had ordered a set of ceramic coated Doug Thorley Tri'y's and am quite happy with the quality and the... 1973-1987 GM PICKUP TRUCKS, SUBURBAN, BLAZER/JIMMY Headers 1973-1987 Chevy C10 Doug Thorley Headers Doug Thorley: THY-300Y-C. Engine: 265-400; Features. TRI-Y HEADERS - WILL FIT ANGLE PLUG CYLINDER HEADS; MANUAL OR AUTOMATIC TRANSMISSION; MAY REQUIRE AIR CONDITIONER BRACKETTri-Y (or 4 into 2 into 1) headers will increase the power of your engine across the widest RPM-band possible. That is the beauty of the design, and that is why they are the best street header available. PN: THY-359Y-C is designed for 1978-88 G-body cars with either a 4.8- or 6.2-liter LS swap.Contacted Doug Thorley, it is a smog legal 22r header. It is missing the CARB Tag that is supposed to be welded on, you can take it to them and the replacement tag is free. That is what they told me when i called this morning. Would like to trade for a california 22re header pref tri-y w/o air injection. Ive been told its worth around 200 used.Headers are for an LS swap. Doug Thorley Tri-Y Headers Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range.Doug Thorley Long Tube Tri-Y Headers with Y-Pipes Jeep Grand Cherokee WJ 1999-2004. $1,236.09. Buy in monthly payments with Affirm on orders over $50. Learn more. Doug Thorley Headers. Model #THY-637Y-C. Help me decide. Add to Cart. Description.Doug Thorley markets their header design for that purpose. I will also say it's definitely a hot rodders option as it flies up to 80 without much effort. It's definitely much more responsive at interstate speeds. The original JG tune woke up the sleepy hemi but the headers with the updated tune make it feel like a whole different engine!Each header comes with CARB certification papers and sticker. Very few headers on the market do this which makes their headers illegal in most places. Why are most Doug Thorley designs Tri-Y's? Doug Thorley Headers firmly believes that where possible, the Tri-Y design is the way to Make It Go!Jun 19, 2006 · I have a set of AFR 185 heads mounted atop my 331 Stroker in a 64 Falcon Sprint. The engine has been resting in the bay for some time now as I complete the final connections with wiring ect. I had ordered a set of ceramic coated Doug Thorley Tri'y's and am quite happy with the quality and the... Doug Thorley Headers THY-379Y-C Silver Tri-Y Header (1962-67 Chevy II/Nova, 265-400 Small Block (Aftermarket Front Clip With Front Steering), 1 Pack 5.0 out of 5 stars 1 $689.00 $ 689 . 00Doug Thorley Headers was on three Speed Channel programs in 2006. We were on 2 (two) segments of Cut, Chop and Rebuild, and one segment of Street Tuners. They returned on May 30th,2007 to shoot another special program.Doug Thorley Headers Tri-Y Header. Item: THY-355Y-C. Tri-Y Header Tube Size 1 3/4in. Collector Size 2 1/2in. Incl. Chrome Plated Y-Pipes/Connector Pipes/Hardware Dual Exit Silver Ceramic Coated [Available While Supplies Last]ogun ose fun omo yahoobts house priceThorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range. The Tri-Y 4:2:1 configuration builds the most power in the middle rpm range, which is great for towing and steep grades. Doug Thorley Headers shortie tri-y headers deliver the ultimate in performance and gas mileage for your 2007-2012 Toyota Tundra. Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most.In 1964 I bought a set of Doug's (Doug Thorley) Tri-Y headers for my 327 powered '55 Chevy gasser. Stock 365 horse short block, Mondello double humps, Chet Herbert #70 roller, Edelbrock cross ram with 2 500 cfm Holley's, 5:57 Pontiac rear with Henry's axles. Dump the clutch at 8,000 and power shift at 8,500, ran 11:20 at 121.Joined Sep 13, 2002. ·. 107 Posts. Discussion Starter · #1 · Mar 3, 2003. Only show this user. Has anyone had experience with Thorley tri-y. plated headers ? I am thinking of buying a set for my 69/350. Spec wise they look to be a little heavier than competitors with a 3/8 flange and 14 ga. tubes vs. 5/16 flange and 16 or 18ga. tubes.Doug Thorley Tri-Y's with Pypes Violators I decided to go with Doug Thorley Tri-Y headers and Pypes Violator mufflers (2.5" exhaust w/ X pipe). The passenger side headers installed very easy from the top. The driver side had to be installed from underneath with the car 24" in the air. The power steering pump was a challenge, but not terrible.Doug Thorley Tri y headers. Discussion in 'Performance and Tuning' started by jwatt, Mar 10, 2021. Post Reply. Mar 10, 2021 at 1:08 PM #1 #1. jwatt [OP] I heart men. Joined: Jan 10, 2020 Member: #40985 Messages: 1,307 Gender: Male First Name: Jack Oregon Vehicle: Salsa Red 2007 Tundra DC @91k.Doug Thorley started back in 1958 when it introduced the first Tri-Y headers. The company specializes in creating performance headers and exhaust systems for the automotive industry. They offer kits for classic cars and modern vehicles as well.Doug Thorley Headers THY-311Y-C tri-y headers deliver the ultimate in performance and for your classic Chevrolet tri-five Bel air, Nomad, 210. These tri-y headers are designed to replace the factory stock exhaust manifolds with a performance component that results in a serious increase in exhaust flow over stock.Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency.Doug Thorley Tri-Y Headers. clint440; Dec 14, 2019; Engine & Performance; 2 3 4. Replies 32 Views 7K. Mar 6, 2021. clint440. C. JBA Shorty Header Gasket. ... Replies 10 Views 2K. Feb 27, 2020 [email protected] Tune after S&B intake and Shorty Headers? GhostGregg; Sep 30, 2019; Engine & Performance; Replies 4 Views 3K. Sep 30, 2019. Riccochet ...Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency.Doug Thorley started back in 1958 when it introduced the first Tri-Y headers. The company specializes in creating performance headers and exhaust systems for the automotive industry. They offer kits for classic cars and modern vehicles as well.Just wondering if anyone is interested in buying a New set of Doug Thorley Headers for 5.2L & 5.9L ZJ. Let me know. 2012 WK2 Limited, 4x4, 5.7L Hemi, Mopar CAI, Flowmaster super 44'sDoug Thorley Long Tube Tri-Y Headers with 1 5/8" Primaries for 1967-72 GM Trucks are designed to outflow stock exhaust manifolds by leaps and bounds. Tri-Y (or 4 into 2 into 1) style headers by design will increase the power of your motor across the widest RPM band possible. catholic morning prayer in tamilseenda bluetooth mouseHello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...Hello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...Doug Thorley Headers was on three Speed Channel programs in 2006. We were on 2 (two) segments of Cut, Chop and Rebuild, and one segment of Street Tuners. They returned on May 30th,2007 to shoot another special program.Doug Thorley is really great. The people I bought my headers from ordered the shortys the first time around, when I wanted the LTs. We called DT and they said that would take them back, no problem. So we shipped them back and reordered the LTs correctly. Very satisfied.Anyone know anything about Doug Thorley's Tri-Y headers for the 5.2/5.9 Durango 4WD? In particular, how well do they perform and will they fit on a 2000 Durango 4WD without having to throw away the skid plate? Summit Racing has them listed for $608.95 (Part Number DTE-197Y)...1973-1987 GM PICKUP TRUCKS, SUBURBAN, BLAZER/JIMMY Headers 1973-1987 Chevy C10 Doug Thorley Headers Doug Thorley: THY-300Y-C. Engine: 265-400; Features. TRI-Y HEADERS - WILL FIT ANGLE PLUG CYLINDER HEADS; MANUAL OR AUTOMATIC TRANSMISSION; MAY REQUIRE AIR CONDITIONER BRACKETDoug Thorley Headers Tri-Y Header. Item: THY-355Y-C. Tri-Y Header Tube Size 1 3/4in. Collector Size 2 1/2in. Incl. Chrome Plated Y-Pipes/Connector Pipes/Hardware Dual Exit Silver Ceramic Coated [Available While Supplies Last]Doug Thorley Tri-Y Headers 42 Customer Reviews Thorley headers are designed to outflow your stock exhaust manifolds. They are designed with an emphasis on maximum low and mid range torque, while making ample horsepower throughout the RPM range.Doug Thorley Headers is the originator of the tri-y header design, which is the most efficient way to increase horsepower and torque over a broad RPM range, and more importantly the range where you use it most. That better exhaust flow produces noticable gains in horsepower and torque output, while increasing fuel efficiency.Hello everyone! I'm new here, and would appreciate benefitting from the advice of all you Bronco officianados. I just bought a beautiful 1975 Bronco. With the exception of a suspension lift, fender flares, wheels and tires, its a stock Bronco with 302. I just bought a pair of Doug Thorley...Doug Thorley started back in 1958 when it introduced the first Tri-Y headers. The company specializes in creating performance headers and exhaust systems for the automotive industry. They offer kits for classic cars and modern vehicles as well.Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals Email Report 65_Impala Very Senior Member Posts: 4887 Reg: 12-29-02. User Info. Send Private Topic View Profile. 07-17-21 08:31 PM - Post# 2823401 In response to 1983G20Van.ao3 wrappedultimate board prep login L1a