Can't Get Enough
Join Date: Mar 2000
Location: So. Jersey
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Re: 258 exaust manifold year swap info
From what I can tell from the 4WD Hardware catalog and the two engines that I have is the cut-off year is 1980. Exhaust manifolds from '72 to '80 are same. They actually bolt to the intake under the carb. '81 to '90 are different. The common area here is a tube going from the EGR setup to the intake. BTW my '85 engine does not have air tubes at each runner. Maybe some years did. It has the Pulse air system.