I thought that those nice forged pistons that Tom has will take a stock 250 to abot 9.5:1 without any decking. The pistons go up just a little higher than the 307 flat tops. But maybe these are different pistons. How does one drop the compression? Special thick head gasket?

I do not recommend 6:1, too low. :-)


Mark
'67 Camaro L6-250