I don't think that they(hardened seats) will be in there. When I go to the larger valve setup, I understand that hardened seats are only a couple thou deep and can get removed if you go to a larger valve which is what I am doing. When we induction(rocklinize) hardened the tooling we used at work they were Max .005-8 depth before you hit softer metal. The compression will be maximum @ 9.1 to 1 and the turbo boost will be limited to 12psi. The compression might not be as high as 9 to 1 even if I deck the block .080 since this is a 78 block@110hp AND the current pistons are .185 in the hole already. I'm getting ready to CC the heads just to check where it's at "stock wise" I do have another earlier year motor that has not been opened up yet, but this block just didn't look to have much ring wear. I don't want a speed demon(got a 70 challenger, built 440-sixpack, 4 speed for that) just something that is snappy AND dependable with the top down and A/C on.
I'm trying to find a decent machine shop in central Florida to check the block,add the larger valves and do the machine work I want. I'm emailing my wish list to Oregon cams for a grind to work with my project.
