V6 Doug Thorley Shorty Headers Help - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Dacannon · 08-14-2011, 06:05 PM

I searched and could not find an install thread for the Doug Thorley Shorty Headers how are these supposed to stay on if they are not welded? Do they need to be welded? I thought these were direct bolt on any help is appreciated.

J.L.TYCHE · 08-14-2011, 06:58 PM

Your cats need to be welded to the headers

VR Baron · 08-14-2011, 07:33 PM

Down pipes need to be cut to a certain length and welded to the headers. Shop did mine for 300.

Ventmaster · 08-14-2011, 08:11 PM

Don't beat yourself up Mr. Cannon, all the shorty's require some cutting and welding. On the JBA's you also cut the midpipe and weld on a flange that is then secured to the new header with a "v-clamp" without a gasket.
Suffice it to say its an unorthodox and inadequate device that is not duplicated on the JBA's V8 shorty headers and they often leak.

IMHO if you want shorty's, you're better off with the DT's.

Victoryred69 · 08-14-2011, 10:46 PM

i bought the DT's and didnt actually weld them to the downpipe.. the shop i went too welded a 3 bolt flange to the header and the downpipe after the cut, it worked out great and is easy to take off or anything if i really needed too heres my thread!

http://www.camaro5.com/forums/showthread.php?t=158013

Dacannon · 08-15-2011, 12:01 AM

Thank you everyone I did some measuring and cutting did not weld anything yet wanted to check for proper fitment so far everything is looking good I will be welding by tomorrow once again thanks.

Ivan @ Southwest Speed · 08-16-2011, 08:30 AM

Sorry I didn't see this sooner!!

Looks like the fellas hit this pretty well however.....and thank you for doing so all!

We're still pumping these out and they seem to have the best feedback of ALL headers that we sell for ALL of our platforms.

They simply do what they advertise to and look good doing it!

Thank you again and please PM or email me direct if you need specific help or have questions!

Ivan

08-14-2011, 06:05 PM	#1
Dacannon Drives: 2010 ABM 2LTRS, E46 330XI Join Date: Jun 2011 Location: Chicago,IL Posts: 369 View My Garage	V6 Doug Thorley Shorty Headers Help I searched and could not find an install thread for the Doug Thorley Shorty Headers how are these supposed to stay on if they are not welded? Do they need to be welded? I thought these were direct bolt on any help is appreciated.

08-14-2011, 10:46 PM	#5
Victoryred69 Drives: RS Victory Red/BS V6 Join Date: Aug 2010 Location: toronto Posts: 384	i bought the DT's and didnt actually weld them to the downpipe.. the shop i went too welded a 3 bolt flange to the header and the downpipe after the cut, it worked out great and is easy to take off or anything if i really needed too heres my thread! http://www.camaro5.com/forums/showthread.php?t=158013 __________________ 2010 Camaro 2LT RS M6 VR/BS Flowmaster AMT Axle Back Vararam Ram Air Intake P13 Plazma Bulbs DT Shorty Headers Heritage Grill Blacked-Out Taillights and Side Markers

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08-14-2011, 06:58 PM	#2
J.L.TYCHE Tampa Gulf Coast Family Drives: 2011 Corvette Join Date: Feb 2011 Location: TAMPA FLA. Posts: 302 View My Garage	Your cats need to be welded to the headers

08-14-2011, 07:33 PM	#3
VR Baron SoCal Camaro5 Race Team Drives: 2021 Shadow Grey Camaro 2SS 1LE Join Date: Mar 2010 Location: SO CAL Posts: 14,367	Down pipes need to be cut to a certain length and welded to the headers. Shop did mine for 300.

08-14-2011, 08:11 PM	#4
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 3,023	Don't beat yourself up Mr. Cannon, all the shorty's require some cutting and welding. On the JBA's you also cut the midpipe and weld on a flange that is then secured to the new header with a "v-clamp" without a gasket. Suffice it to say its an unorthodox and inadequate device that is not duplicated on the JBA's V8 shorty headers and they often leak. IMHO if you want shorty's, you're better off with the DT's.

08-15-2011, 12:01 AM	#6
Dacannon Drives: 2010 ABM 2LTRS, E46 330XI Join Date: Jun 2011 Location: Chicago,IL Posts: 369 View My Garage	Thank you everyone I did some measuring and cutting did not weld anything yet wanted to check for proper fitment so far everything is looking good I will be welding by tomorrow once again thanks.

08-16-2011, 08:30 AM	#7
Ivan @ Southwest Speed Drives: '15 Z06, '01 NBM SS, '97 SS Join Date: May 2009 Location: Rio Rancho, NM Posts: 12,161	Sorry I didn't see this sooner!! Looks like the fellas hit this pretty well however.....and thank you for doing so all! We're still pumping these out and they seem to have the best feedback of ALL headers that we sell for ALL of our platforms. They simply do what they advertise to and look good doing it! Thank you again and please PM or email me direct if you need specific help or have questions! Ivan