Leaderboard

Judging by the newly acquired ventilation port in the case I'd say that the planetary decided that it no longer wanted to do this any more.

will this work: pair of early 87-up MPFI aluminum 2.8L cylinder heads(with the common older common flat top style upper plenum) onto a 3.1L with same style flat top upper plenum that also has aluminum heads, 1987-up 2.8L heads casting number 10048651 1992-?? 3.1L heads casting number 10048696 i have not seen anything that looks to be different so far that would prevent using the 2.8L heads on the 3.1L, the 3.1L is a 1992 and the 2.8L appears to be the same year or right next to it, maybe would i need to get head gasket set(topend gasket set) for the 2.8L or the 3.1L for this heads pair swap ? the 3.1L heads have bent over valves due to timing chain breakage. i appreciate anything at all. thanks update: i found out today that the head gaskets are same betweent he engines but the uper plenum intake gaskets differ, i got printout of the gasket sets for both, i have not yet put the plenums upside down and side by side, but the lower intake gaskets show to be same between these two engines so i dont see why i can use the 3.1L lower intake onthe 2.8L heads anyone? thanks!

As long as they are aluminum then you are fine. It doesnt matter what head gasket set you get, its the same block and same heads. Only difference in the 2.8/3.1 is the crank and pistons. Robby

So, you want to put 88+ Aluminum heads from a 2.8 on your 92 3.1L? That should be fine, they are the same head. However, if the heads are from an 87, then they are iron on wont line up with your intakes on your 3.1L. And the gasket differences you are talking about, do you mean the plenum gaskets? If so, I can explain why Robby