Thread: 1989 Gen 1 ~ Interchange Questions

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Answer to question #2 from page 8 here...

Originally Posted by camaro_fever68

Slotting the intake holes to fit the late modle gen 1 heads is a very simple task that about anyone can do.

The four middle intake bolts go in at a 72 degree angle verses pre-87's 90 degree angle.. That's the only ones that need modifying.

The holes are in the same place, just the angles of the the 4 center holes are slightly different.


I've done this mixing and matching many times---especially pulling the TBI intakes off the 80's Camaros and going with a regular intake and carb.

Originally Posted by camaro_fever68

Do not hog out the holes, elongate them to change the angle. A little bit of careful metal removal is all that's needed. When done right, the holes are not wider, just longer.

When using the late intake on early heads, I don't use a wedge washer. I grind the throttle body side of the bolt boss down a little until the bolt and washer fits flat. There is plenty of meat there to work with.

When doing the early intake on a late heads swap, a wedge must be used because you have no boss on the ealy intakes to work with.