Headers to Manifolds 72 chevy - The 1947 - Present Chevrolet & GMC Truck Message Board Network

flashed · 12-21-2009, 08:35 PM

I need a complete new exhaust system and decided to go back to stock type manifolds instead of the headers currently on my truck. My problem is now that I got the dr side header off the manifolds I bought to replace the headers will not fit due to the alternator mount on the dr side . I can take the alternator bracket off and it fits but then I have no way to mount the alternator back on . Do I need a different bracket for the alternator or a different manifold ? If anyone can help me it would be much appreciated .This is just one more reason I dont like headers.

JimKshortstep4x4 · 12-21-2009, 08:56 PM

You have a manifold for an older setup. The 72 manifold will not have the drilled and tapped boss on it. You can either get a different manifold or grind the boss off of your existing one. Also, someone may be willing to trade with you.

Jim

flashed · 12-21-2009, 09:07 PM

Thankyou for the quick reply . I guess I will start grinding tomorrow evening after work as I need to get her back together ASAP and get to the muffler shop.

flashed · 12-23-2009, 12:07 AM

Got the headers off , What a pain. Also got the driver manifold modified to work and installed both and then drove the truck with no exhaust to the muffler shop for complete exhaust system.

12-21-2009, 08:35 PM	#1
flashed Registered User Join Date: Oct 2009 Location: canton ga Posts: 12,724	Headers to Manifolds 72 chevy I need a complete new exhaust system and decided to go back to stock type manifolds instead of the headers currently on my truck. My problem is now that I got the dr side header off the manifolds I bought to replace the headers will not fit due to the alternator mount on the dr side . I can take the alternator bracket off and it fits but then I have no way to mount the alternator back on . Do I need a different bracket for the alternator or a different manifold ? If anyone can help me it would be much appreciated .This is just one more reason I dont like headers.

12-21-2009, 08:56 PM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	Re: Headers to Manifolds 72 chevy You have a manifold for an older setup. The 72 manifold will not have the drilled and tapped boss on it. You can either get a different manifold or grind the boss off of your existing one. Also, someone may be willing to trade with you. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

12-21-2009, 09:07 PM	#3
flashed Registered User Join Date: Oct 2009 Location: canton ga Posts: 12,724	Re: Headers to Manifolds 72 chevy Thankyou for the quick reply . I guess I will start grinding tomorrow evening after work as I need to get her back together ASAP and get to the muffler shop.

12-23-2009, 12:07 AM	#4
flashed Registered User Join Date: Oct 2009 Location: canton ga Posts: 12,724	Re: Headers to Manifolds 72 chevy Got the headers off , What a pain. Also got the driver manifold modified to work and installed both and then drove the truck with no exhaust to the muffler shop for complete exhaust system.

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