jparr

i was wandering if this will work or not? i found a pair jus wandering if they work on my 85 or not THANKS JAY :steering:

CorvetteZ51Racer

They'll bolt up, but the EGR passages in the intake manifold and cylinder heads are different between the aluminum and iron heads are different. When you pull your intake manifold off, you should notice a passage that runs across the manifold between the front set of runners are rear set on each side of the motor. The iron heads have matching passages, but the aluminum heads do not. If you're not concerned about the slight degradation in your emissions system, I'd go for it.

jparr

other then that is there anything else to worry about ? thanks for the quick answer JAY i wouldnt mine getting them and haven them ported out and flowed not sure what i can get out of them but i have heard good numbers!!

vader86

I would have them ported for the 383, and the valvetrain upgraded for the cam you have in it.

There shouldnt be any other problems besides EGR.

Bluevette85

I have them on my 85. You'll need a thicker head gasket than stock because the 113 heads have a smaller volume. My compression is 10.5-10.6:1.

Get this book John Lingenfelter on Modifying Small Block Chevy Engines it has evrything you need to know about changing the heads.