gbody parts downpipe - Page 5

earlbrown · 05-20-2008, 09:01 PM

Quote:

Originally Posted by FLR

Now my question is has anyone ever heard of the THDP being too long at the bottom, where the testpipe slides on? Maybe its just my car, but I couldnt get the testpipe on inbetween the Hooker catback and the DP.

I had to trim an inch off of mine way back when. It didn't cause any problems It just had alot of stress on the cat pipe hanger.

FLR · 05-21-2008, 08:23 AM

Quote:

Originally Posted by earlbrown

I had to trim an inch off of mine way back when. It didn't cause any problems It just had alot of stress on the cat pipe hanger.

When I removed the stock downpipe and Hooker testpipe, the cat hanger came off in three pieces.

The leaking original rear main seal destroyed it. I just installed it without one. I did have to force the new testpipe in there, even after I had it expanded by a exhaust shop. Im pretty sure I tweaked the catback. Maybe I'll have to trim the THDP some, I spoke to a buddy and he said he had to on his GN. My driveshaft is rubbing the exhaust in two places, and Im getting a vibration resonating out of the exhaust. Doesnt do it with the dump open though.

Im taking it to my buddies shop today and putting it on a four post lift. That was I can see if its hitting when the car is on the ground.

Other than this issue, the THDP went right in with a corkscrew motion and doesnt even come close to hitting anything. I didnt even have to mess with the bottom of the firewall, as I was told I might have to.

Thanks for the insght.

Scott.

just plain john · 05-21-2008, 09:17 PM

OK then, let me pose a question. If one wanted to upgrade and buy a DP, say 3 or 3.5 inches, which one would you get for lets say $450 or so? I only want to do this once, and I don't want to beat it or ship it back.

Steve Wood · 05-21-2008, 09:18 PM

Either a TH or one from RJC Racing

chrisk · 06-23-2008, 03:21 PM

The RJC is a Tigmasters.
Home

Steve Wood · 06-23-2008, 03:28 PM

This is probably the one I would try...the 3.5"

Home

chrisk · 06-23-2008, 03:51 PM

Quote:

Originally Posted by Steve Wood

This is probably the one I would try...the 3.5"

Home

Even that they are made in china???

What do you think about DP's with external gates, such as the 1 from Archie at GN1 PERFORMANCE - 3inch Down Pipe

Steve Wood · 06-23-2008, 03:57 PM

Don't know where they are made, but, I figure Dan Strezo will make it right if there is a problem.

Fortunately, I have THDP's on my cars.

I don't like external gates on street cars....good ones cost a bunch.

Wonder where Archie's come from?

05-21-2008, 09:18 PM	#64 (permalink)
Steve Wood Scam Detector Enabled Join Date: Sep 2000 Location: East of Eden, Texas Posts: 41,366	Either a TH or one from RJC Racing __________________ ------------------ A proud member of Stonewallers Against Bogus Technology Fix reason firmly in her seat, and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blindfolded fear. Thomas Jefferson . www.vortexbuicks-etc.com

06-23-2008, 03:21 PM	#65 (permalink)
chrisk Registered User Join Date: Apr 2005 Location: Mundelein, IL Posts: 144	The RJC is a Tigmasters. Home __________________ 1987 Grand National 249" Stroker by Lonnie Diers, Built 200R4 by Jimmy's in Mundelein. PTE 6776 DBB, PTE FrontMount, PTC 10", Razors AlkyControl and lots more... 1989 Turbo Trans Am #836 Resting... Turbo Trans Am.Com Last edited by chrisk; 06-23-2008 at 03:24 PM.

06-23-2008, 03:28 PM	#66 (permalink)
Steve Wood Scam Detector Enabled Join Date: Sep 2000 Location: East of Eden, Texas Posts: 41,366	This is probably the one I would try...the 3.5" Home __________________ ------------------ A proud member of Stonewallers Against Bogus Technology Fix reason firmly in her seat, and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blindfolded fear. Thomas Jefferson . www.vortexbuicks-etc.com

06-23-2008, 03:57 PM	#68 (permalink)
Steve Wood Scam Detector Enabled Join Date: Sep 2000 Location: East of Eden, Texas Posts: 41,366	Don't know where they are made, but, I figure Dan Strezo will make it right if there is a problem. Fortunately, I have THDP's on my cars. I don't like external gates on street cars....good ones cost a bunch. Wonder where Archie's come from? __________________ ------------------ A proud member of Stonewallers Against Bogus Technology Fix reason firmly in her seat, and call to her tribunal every fact, every opinion. Question with boldness even the existence of a God; because, if there be one, he must more approve of the homage of reason, than that of blindfolded fear. Thomas Jefferson . www.vortexbuicks-etc.com

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

05-21-2008, 09:17 PM	#63 (permalink)
just plain john Registered User Join Date: Apr 2008 Posts: 44	OK then, let me pose a question. If one wanted to upgrade and buy a DP, say 3 or 3.5 inches, which one would you get for lets say $450 or so? I only want to do this once, and I don't want to beat it or ship it back.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
GBody Parts and Cotton Performance	JimP	Product Reviews	1	12-04-2007 09:26 PM
1987 GN PARTOUT!! PARTS PARTS PARTS!!!	Grand nati0nal	Parts For Sale	16	10-18-2007 09:39 PM
te-44 flutter at 10 psi	turbo dave	Buick V6 Turbo Tech	9	06-02-2007 08:43 AM
gbody parts stainless upper radiator hose!!	nero	Product Reviews	4	07-06-2005 06:39 AM
Lots of Parts - Performance/Stock/Interior + More!	darkfa8	Parts For Sale	0	08-10-2003 12:33 AM