For those that are installing them as we speak did you do anything at all to the heads or did you just get them from an explorer and are putting them on now.
For those that are installing them as we speak did you do anything at all to the heads or did you just get them from an explorer and are putting them on now.
The ones I bought are new castings with a 5 angle valve job and 1.94 intake and 1.54 exhaust valves. Depending on how they dyno, I may consider porting them later. For what I want I doubt I'll need to.