[Z10]

Originally Posted by Z10

F.I.R.S.T TPI Manifold and ZZ4 Head Mismatch

We ran into a bit of a mismatch with the F.I.R.S.T TPI intake manifold and the aluminum heads on the ZZ4. The ZZ4 heads have a protrusion that interferes with the intake seating properly. Car Boss and I have another friend who owns a machine shop, He machined enough off for the intake to fit properly. So, for those of you contemplating using this intake on a ZZ4, be aware that you'll need to make this modification.

*****Update***** Double EE spoke to Ken at F.I.R.S.T. and he has a modification for the ZZ4 head. He'll mill down the manifold to fit the head. We just didn't tell him what we were installing on. So, if you order one, let him know before he ships.*****