I have an opportunity to get some aluminum corvette heads off an 88 vette, i was wondering if it wold be to much of a hassle to put them on my 88 IROC. F.Y.I. He is dropping the motor in favor of a 400 small block

 

Well, first you have to take off the TPI. That would take you an hour or 2 maybe depending on how fast you are working. Then you just unbolt the old heads and exhaust manifold. Considering the project I am doing right now on my 89 Iroc... I would give body parts for a task like this

 

So they should just bolt right up? What project are you undertaking?

 

The vette heads have the old style manifold bolt angle, but you should be able to slot your bolt holes on the manifold.

 

First pocket port those #113 heads, 2.00/1.56" valves, RRs, toss the oil shedders, etc.; it's worth another 20-25hp to work those heads. If you like you can port match the intake runners to a larger base for later addition. The chambers are 58cc so you may need to open em up a little when porting.

You will need to get the external EGR tubes from the Vette and have the lower one welded into the passenger side exhaust manifold.

I think the TPI will bolt up since the heads are post '86.

 

Vette heads never went to the newer bolt angle. They all have the old style angle.