Doug Thorley Headers Customer Reviews
78 Customer Reviews
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It was the late 1950s, during the golden era of hot rods, when Doug Thorley crafted his plans for the highest quality headers on the block. Fine tuning, superior craftsmanship and unmatched attention to detail helped Doug Thorley Headers power street racers everywhere.
Now 50 years later, Doug Thorley Headers are built with the same mission in mind: amping-up the power of your street ride. Thorley Headers use one of three souped-up designs: a unique Tri-Y setup that roars from idle up to 4500 RPM; shortie headers for ease of installation and smog compliance; and long tube headers that specialize in mid to high RPM power.
Because they're setup for the streets, Thorley Headers also feature the hardware and custom flanging to be 50-state smog legal (some shortie applications). Each header includes a sharp nickel chrome finish that's polished to a sweet gleam, or a metallic ceramic coating that withstands high heat. And, your Doug Thorley Headers carry a Lifetime Warranty for the original owner.
Thanks to the Magnuson Moss Warranty Act: US Code – Title 15, Chapter 50, Sections 2301-2312, your vehicle’s factory warranty is protected by law when you add aftermarket parts. Details
78 Customer Reviews
Reviewed by Kevin H (PLYMOUTH, NH) Reviewed for a 1988 Chevy C/K 3500 — Feb 24, 2014 11:20 PM
These headers are awesome. Definitely not the thin lightweight bargain basement pieces that will melt your plug wires and be rotted out in a few years. The flanges are very heavy and they use OEM type donuts with steel inserts at the collectors. Definitely well worth the extra cost and by far the best price was here at Auto Anything
Reviewed by William C (Greensburg, PA) — Jan 27, 2014 2:02 PM
Arrived quickly,well packed and complete > installer reused 20i3 gasket (not included w/ headers) only problem was location of a 'bolt' that nearly defied removal > Toyota's < Too early to calculate mileage but the Tacoma (2.7 liter motor) now climbs over Laurel Ridge in OD;before the K&N and new headers we needed 4th gear to get over. Assuming that the mileage will improve along with the power gain. Sounds Fine. WEC
Reviewed by Richard S (DAYTON, NV) Reviewed for a 1995 Geo Tracker — Jan 02, 2014 3:00 PM
'95 Geo Tracker ... Heavy metal but still half the weight of the stock manifold. Perfect welding everywhere. Turns out the stock manifold was cracked anyway, so score one for me. Everything fit right, Gasket is provided but I had to buy the sealing compound. Damn! One bolt was difficult to get to so had to guess on the torque. They were so shiny the motor dazzled, but I really liked the Doug Thorley Medallion welded to the pipe. Performance was clear on test drive. Well Done!!
Reviewed by Kenneth E (Colorado Springs, CO) Reviewed for a 2004 Chevy Suburban — Nov 06, 2013 8:18 AM
Well let me start by saying that after sending the second set of BBK headers back because they leaked. I order a set of Doug Thorley Headers. and right out of the box I seen that the weld was much better, it went all the way around the each tubes inside and out, I like the sound of these headers and more power towing up hills. as far as gas saving.I can't tell because I can't seem to keep my foot off the gas. So don't Buy BBK header they leak!Doug Thorley are the way to go.
Reviewed by CARLOS R (SAN DIEGO, CA) Reviewed for a 1999 Toyota Tacoma — Jul 11, 2013 8:19 PM
Replacing rusted Downey headers and just did not want to go with stock exhaust manifold. I knew the difference in power would frustrate me. With California's strong pollution regulations there is limited choices. But I was glad I made the decision to get these headers. No loss of power if anything I think I have a little more power than with the Downey headers. Besides be thrilled with the headers, I was impressed by Autoanything on their quick delivery and great prices, you can't beat them.
Reviewed by Miles P (FERNDALE, CA) — Jun 25, 2013 9:27 PM
afe cold air intake, throttle body spacer, afe cat back 3inch, dough thorley headers long tube. I did all the work myself, took a day and a half for everything. better fuel economy, cruise control, doing 65 got 21mpg. sounds great. Had a traction control issue, and check engine light on, o2 sensors. but bolt on parts, the truck breaths better; and improved mpg. Worth my money!
Reviewed by kai l (VENTURA, CA) Reviewed for a 2012 Toyota Tacoma — May 13, 2013 10:02 PM
Overall I'm impressed. The installation will require right tools and donut ring gasket t exhaust pipe for Toyota Tacoma 2.7 2012. Definately helps with acceleration! Make sure to drive vehicle hard after install, and re tighten torque header.
Reviewed by Robert E (Arroyo Grande, CA) Reviewed for a 2001 Toyota Tacoma — Apr 08, 2013 2:12 PM
Great fit, easy to install apart from one bottom flange nut. The one closest to the firewall cannot be tightened with a deep socket. I could only fit a combination wrench in the space available and had to guess the torque. Also welding flash on plates. After install I noticed improved top end performance. A good header that could use some modifications and better quality control.