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Old 04-02-2008, 02:19 AM   #1
ppscugog
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87 exhaust manifold

Does anyone know the difference between the 1987 exhaust manifolds and the 1988 -1995 manifolds for a 5.7 L TBI 4X4 ? Several of the major suppliers have a part number that is specific to 1987, then a different part number for 88-95?

I need new manifolds for my GM crate engine because my old ones have shrunk to much to be re-used. (The Goodwrench engine is built to be like a 1994, I was told). I want to transfer all of the plumbing from my 1987 but don't know what exhaust manifolds to buy. They look the same in the photos.

Thanks
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Old 04-02-2008, 04:29 AM   #2
dadsbrew
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Re: 87 exhaust manifold

87's dump in a different place than 88 and up. on 88 which is a different chassis the passenger side dumps towards tha back I think? and the drivers side dumps straight down between the 3 and 4th port. Or #5 and #7 if you want to get technical. : )
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Old 04-02-2008, 04:45 AM   #3
gchemist
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Re: 87 exhaust manifold

I installed 3/4 length Chevelle headers. Work and fit great!
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Old 04-03-2008, 02:00 AM   #4
ppscugog
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Re: 87 exhaust manifold

Thanks dadsbrew... I see the difference now. The left (drivers) side manifold outlet is directed more to the ground. I'm going to need the 87 manifold to match my stock exhaust.
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