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Old 02-23-2010, 07:07 PM   #1
lawdawg's Avatar
Join Date: Oct 2009
Posts: 21
Exhaust/intake question

Does a '90 258 4.2L exhaust/intake manifold bolt up to a '78 258 4.2L. I have my MC2100 on the '90 and picked up a '78 that has a 1 bbl Carter on it. I cannot look at the two side by side until Sat. and was hearing it may be a problem. If so can someone suggest a solution to the problem...if there is one.

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Old 02-23-2010, 10:05 PM   #2
Join Date: Feb 2010
Posts: 6
I'd check advanced auto online to compare part #s for both intake manifolds.

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Old 02-24-2010, 08:53 AM   #3
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Join Date: Oct 2009
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I know they are different since the '78 is a one bbl and the '90 a 2bbl, also the '78 has the smog air line on the intake. I am trying to figure out if the bolt on specs are the same.
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