73-87 Dynomax 85003 headers + driveshaft interference? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1BadSS · 02-07-2011, 02:58 AM

I just installed these on my truck this weekend. Found the passenger side flange to lightly rub on the front driveshaft. Has anyone else seen this kind of issue when installing long tube headers on their 4x4?

lurch115 · 02-08-2011, 12:34 PM

i had that issue in my '84 and was able to solve it by rotating the flange. of course that was also after replacing my front drive shaft because it had too much slop in the slip joint.

02-07-2011, 02:58 AM	#1
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	73-87 Dynomax 85003 headers + driveshaft interference? I just installed these on my truck this weekend. Found the passenger side flange to lightly rub on the front driveshaft. Has anyone else seen this kind of issue when installing long tube headers on their 4x4? __________________ 1987 Mustang Coupe - 2.7 Stroker, 78mm turbo, Stainless header, 3" Exh, FMIC, 160lb/hr Injectors, MS3, twin walbro 255's, 34psi. Eating V8's daily. 04 Pontiac GTO 04 Ford Mustang GT 68 C20 LWB stripper truck 73 K5 Cheyenne 76 C20 Sierra Crew SRW 88 K20 Suburban I'm not hammering on metal just to hammer, i'm creating a piece of art.

02-08-2011, 12:34 PM	#2
lurch115 Registered User Join Date: Oct 2006 Location: iowa Posts: 722	Re: 73-87 Dynomax 85003 headers + driveshaft interference? i had that issue in my '84 and was able to solve it by rotating the flange. of course that was also after replacing my front drive shaft because it had too much slop in the slip joint. __________________ "Horsepower is how fast you hit the wall, torque is how far you carry the wall with you." '84 chevy half ton short box 2wd, 67,000 actual miles '03 chevy 1500 HD crew cab 4x4 standard box, 6.0L



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