Thread: intake manifold question

Tweet

Originally Posted by firesign74

In a thread I was working with yesterday(on a different site) a user notified me that an intake manifold from an 1981 350 would fit on a 1992 tbi 350
if I just remachine the 4 center bolts.Does anyone have any expeirance with this, or can anyone validate the feasablity of this techniqe

This is partly true. The four center bolts on Vortec type heads are vertical, but I don't think the '92 heads are Vortecs. It has nothing to do with the center bolt valve covers. Some aftermarket intake manifolds have slots for the center bolts, so they fit both types of head. If your manifold is aluminum it shouldn't be that hard to modify.

I have a dual quad intake that was used on vortac heads. the four center bolts holes were slotted and it had some spacers that would allow the bolts to go in at a different angle. I have not used it on those head just std heads though.