2.8 head on 3.1 block

[Guest]

My understanding is that we are talking about an '85 S10 set of heads.

Excuse me if I'm wrong, but the S10 did not get the HO heads until 1986 when they got EFI.

The '85 S10 was rated at 110 hp and the Fiero at 140 hp.

The '85 S10 heads will give about 20 hp less than using Fiero heads.

Just to clarify this, and hope this steers you right.

Arn

All info I have found indicates '85, and possibly some exceptions before '85.

Also, there's more that's different between the Fiero and S-10 than the heads, like the MPFI intake and EFI, and exhaust.

Also the F-body used teh same heads, which were rated somewhere around 130, again, there was a difference in manifolds, both intake and exhaust.

So you need to look at the whole picture before saying that any one part is a limiter.

[lampy]

I"m done, I give, UNCLE!!!! This horse has been beat to death. Thanks for all the input you guys I think I've got every thing I need. Now I'm going to go for it right or wrong. A stroker 2.8 in a Mazda B2000, probably not to many out there. Maybe for good reason.
Later, Rick