Doug Thorley Headers

Sweet Headers

Posted on 10/15/2009 by Randy B. - 2003 Ford F-250 (Bakersfield,CA)

0 of 0 people found the following review helpful.

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"These are a very nice set of headers, I removed a set of headers I purchased off of Ebay for my Ford V10 and I installed the Thorley headers I gained 5mph on a 7% grade. I love the sound and the horse power gain. I recomend them to any one."

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DOUG THOURLEY HEADERS

Posted on 10/01/2009 by Rollie N. (Edinburg,TX)

0 of 0 people found the following review helpful.

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"I RECENTLY RECEIVED MY D/T HEADERS AND I HAVE YET TO EXPERIENCE SOME HORSEPOWER BUT I KNOW IT CHANGED MY SOUND A LITTLE DEEP AND SAVED SOME GAS EVEN THOUH I GOT A HEAVY FOOT IF AT ANY TIME MY LITTLE EXTRA HORSEPOWER KICKS IN IT WOULD HAVE BEEN A GREAT INVESTMENT."

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Pretty good

Posted on 09/23/2009 by John P. - 2010 Chevy Camaro (Staten Island,NY)

0 of 2 people found the following review helpful.

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"good design, straight foward install, just wish they came with a CARB EO number welded on the headers. They really shouldnt say 50 state legal, if it doesnt come with one of those."

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They'rrrrrre Great!

Posted on 09/14/2009 by Jeremy H. - 2010 Chevy Camaro (Bountiful,UT)

1 of 1 people found the following review helpful.

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"Easy to install, noticed a difference in performance, not much difference in sound (with everything else complete stock). Would buy again!"

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G8 Doug Thorley Review

Posted on 06/17/2009 by Zachary W. - 2008 Pontiac G8 (Herndon,VA)

7 of 7 people found the following review helpful.

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"Very nice headers, especially for the price! AutoAnything has fast shipping. Doug Thorley are comparable to more expensive headers from ARH and Kooks. Excellent mid range torque gains. Gained 30whp/wtq on the dyno, my car dynoed higher then cars with Kooks and similar mods. You will need to dyno tune your vehicle to the headers to take full advantage of the power they can produce. A hand held tuner or canned tune won't cut it."

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Doug Thorley Header Review

Posted on 06/01/2009 by Tim D. - 2001 Toyota 4-Runner (Redmond,OR)

1 of 1 people found the following review helpful.

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"Adding the Doug Thorley headers to my 2001 4Runner made is sound a lot better, however the power gains are not terribly noticable. I can feel the gains in the high RPM ranges (over 4k), however from a stop or at low RPMs the headers appear to have reduced back pressure too much and the truck seems to choke a little off the line. Overall for the price I would recommend them if you have money to spend and are willing to add more than just the headers to make the truck faster."

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Amazing Header

Posted on 03/25/2009 by Jeffrey K. - 2006 Toyota Tacoma (Torrington,CT)

3 of 4 people found the following review helpful.

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"I put this header in my 2006 2.7 tacoma. It definately adds to high end torque and horsepower. I could feel the difference within 5 seconds of driving it. A header definately worth buying for the price."

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FJ cruiser.

Posted on 03/05/2009 by Lane M. - 2008 Toyota FJ Cruiser (Beeville,TX)

4 of 7 people found the following review helpful.

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"Price was right. Took a while to ship. Once I got them I went down to a local shop. Three hrs it was done. I have a cat-back exhaust and the volume of the exhaust didnt increase, it just changed. got a more throaty sound. Power isnt increased by as much as i hoped. need to get the Y-pipe to complete the true free-flowing exhaust."

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22r Doug Thorley Tri-Y Header

Posted on 11/24/2008 by David G. (Carrollton,TX)

15 of 16 people found the following review helpful.

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"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. The chrome was decent, the welds looked nice, and the bend and flow of the tubes (design) was very good. It was visually pleasing to a "gear head" Customer service was very good when I called Doug Thorley to ask a question about model application before I purchased. I would not recommend installation by a beginner. On the first installation the header, it leaked badly. The product had interference with the block, a support plate, and a support plate bolt. This caused the header to not tighten up on the gasket evenly. After grinding clearance on the block, on second installation, the header leaked badly again. This header works on different year models and on my model I had to remove two studs and replace with one stud. I did not know that these two studs sealed an exhaust passage. I had to custom make "plug" to fill the hole that was left by removing these studs. The third installation a small leak was detected at the slip joint where the Doug Thorley header pipe extension slipped on the header. (The instructions were not clear as to use of hi-temp silicone here.) A muffler clamp had to be purchased to try to tighten this slip joint. The header fits very close (too close) to the steering shaft u-joint. I feel that the heat from the header will burn up the grease in this steering joint. I do not see any other way in this application because of limited space. After these alterations, it bolted right up to the factory exhaust catalatic converter. As an experenced master mechanic, I expected these difficulties. The performance increase was good and it increase torque like they claimed it would. Except for installation ease, overall I am happy with this product. I feel it is the best on the market for this application."

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Doug Thorley Headers on the 5.7 IForce Toyota Tundra

Posted on 05/20/2008 by Samuel R. - 2007 Toyota Tundra (Pearl River,LA)

12 of 14 people found the following review helpful.

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"I have placed my Doug Thorley headers on my toyota tundra 5.7.I have also installed a voolant cold air intake and dual gibson exhaust.I have to say im very happy with the headers and the really add the complete package for my exhaust system.If i was yall.GO WITH THE HEADERS!!!"

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Awesome Purchase

Posted on 05/15/2008 by Joshua W. - 2008 Toyota Tundra (Newport News,VA)

12 of 16 people found the following review helpful.

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"These headers are awesome and AutoAnything.com gave me the best deal I could find anywhere."

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1989 Blazer Headers

Posted on 03/28/2008 by George E. - 1989 Chevy Blazer (La Crescenta,CA)

8 of 10 people found the following review helpful.

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"Good instlation & fit work well a great product. Thorley was very helpfull I had a queston called them and got very fast responce and help, a great company to deal with"

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Doug Thorley headers

Posted on 03/28/2008 by Greg C. - 2001 Ford F-350 (Dagsboro,DE)

6 of 8 people found the following review helpful.

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"Installed on a V 10. They were a bear for my mechanic to get the old ones off and get the new ones on. Very tight fit be prepared to disassemble alot around wheel wells. They is very little sound difference, appearence is great, performance when towing was improved, will see how much improvement on the beach."

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2007 Toyota 2.7L, Tacoma w/K & N Cold Air Intake and Magna Flow

Posted on 03/14/2008 by Dennis D. - 2007 Toyota Tacoma (Merlin,OR)

15 of 16 people found the following review helpful.

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"Awesome! Doug Thorley knows what they are doing...better than the stock Toyota headers (2.7 L four) and I definitely can feel the difference in horse power...passed a 2007 or 2008 Toyota Tacoma V6 going up a hill in fourth gear with power to spare! I added the K & N cold air intake system, replaced the first catalytic converter with a high flow/Hi-temp (Magna Flow)catalytic converter (kept the second catalytic converter stock) & replaced the stock muffler with a stainless steel Magna Flow oval that was smaller in size to reduce weight and for; increased HP, Gas Mileage, and great sound too! I am very happy with Doug Thorley, the stock Toyota headers were crimped and the Doug Thorley have a better forced air flow cooling system than the stock headers too! They went on perfectly and I bought the cermaic headers for better perfromace and cooling as I am not using the Toyota stock heat deflector...don't feel it is of any benefit with the set up I now have! Thus, Doug Thorley does know what they are doing and they have been around the business for 40 + years...what more can I say?"

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Doug's is the best

Posted on 02/16/2008 by Jeff T. - 2000 Chevy Silverado (Kokomo,IN)

12 of 17 people found the following review helpful.

"Good horsepower increase, Great throtle response. Good product."

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thorley headers

Posted on 02/02/2008 by Edna F. - 2002 Ford F350 (Glendale,CA)

10 of 15 people found the following review helpful.

"great sound. you can feel the power"

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Great sound and power gain!

Posted on 01/30/2008 by Deloris W. (Riddle,OR)

8 of 13 people found the following review helpful.

"These headers give you an excellent gain in HP, but in the jeep grand cherokees, it is a VERY tight fit on the passenger side."

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2003 Hemi Ram 4X4

Posted on 01/12/2008 by Garry K. - 2003 Dodge Ram (Las Cruces,NM)

5 of 6 people found the following review helpful.

"AutoAnything price and delivery first rate. Headers also first rate in construction and fit in the engine bay but "Y" reducer lands 6" to far back to mate correctly with CAT. With flange cut off to 3/4 " & welded directly to CAT the clearance to crossmember is only 1/4". Instructions were 3rd world and incorrect. That said, other than the exhaust issue, easiest headers I ever installed. extra torque TBD."

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Great header!

Posted on 12/04/2007 by Tavis B. - 1971 Chevy Corvette (Winston-Salem,NC)

10 of 15 people found the following review helpful.

"High quality and look great!"

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Tri-Y Headers

Posted on 12/01/2007 by Jason D. - 1970 Chevy Chevelle (Bowie,MD)

7 of 9 people found the following review helpful.

"These are very nice headers, nice thick flanges and great welds."

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Seattle WA

Posted on 10/19/2007 by William L. - 1992 Chevy C/K 2500 (Seattle,WA)

10 of 13 people found the following review helpful.

"Outstanding constrouction fit and finish. Instalation instructions and hardware are great with nothing missed. When I learn to keep my foot of the Power fun meter I hope to see some milage improvement. Big inprovement in everyday driveability and power. spend the extra and get the ceramic coating well worth the extra cost."

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Doug Thorley headers

Posted on 10/05/2007 by Shawn C. - 1994 Nissan Pathfinder (Woodlandhills,CA)

6 of 8 people found the following review helpful.

"Great service ,fast shipping, Doug Thorley is nothing but quality. Great product."

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Doug Thorley Headers

Posted on 09/13/2007 by Andrew G. - 2006 Chevy Silverado (Fontana,CA)

8 of 10 people found the following review helpful.

"These headers improved all around performance on my silverado. If I even buy another truck or car the first thing im go to get is another set of these headers."

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Great Torque Header

Posted on 08/23/2007 by Eric H. - 1989 Toyota Pickup (Lakeside,CA)

5 of 7 people found the following review helpful.

"The Doug Thorley header ads some extra MPH to the top end of my powerband,but where i notice the most difference is the torque it puts out coming through the gears.With brand new 31" BF Goodrich All Terrains,she lays down the rubber much easier now.It sounds much better too."

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73 chev 2w drive pu.

Posted on 08/17/2007 by Bruce J. - 1973 Chevy C/K 1500 (Enumclaw,WA)

3 of 8 people found the following review helpful.

"very happy with product finish is very good fit was great,passenger side angled a little to much towards my auto trans, it aimed striaght to right front corner of tranny pan, muffler shop had to rebend collector reducer pipe."

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