possible to do so with lt1 castings? im trying to drop compression ratio by increasing the cc and using cometic mls gaskets. im going with a turbo and want to see about 13-15 psi. i already have the forged pistons so i dont want to sell tehm and get dished ones. thanks .

 

I don't think it can be done. There is not enough material in the heads.

Rich Krause

 

Like Rich said there isnt nearly enough room in the heads for that.

 

not even to 68cc?

 

Nope... I honestly wouldnt "count" on anyone getting more than 58-60cc max out of them, and even then they'd probably have to sink the valves a good bit in addition to alot of unshrouding. That's about as far as I've pushed them anyway - approx 60cc.

Figure you'll need at least .002-.004 milled off of the deck to ensure they're flat/true/etc. & .006" is ~1cc.