I think he said 8.1:1 with 13cc dish pistons. I figured I'd like to spend less than $1000 to make it work but if all I need is an intake that would be great. I thought I might need a new cam as well, it's full roller.

Would shaving the heads or block work??

He just sent me this:

http://www.trickflow.com/partdetail...02&autoview=sku

The pistons are -13 cc DSS pro inline series forged pistons

Here are the specs on the cam

gross valve lift 1.60 ratio , intake .5632" , .5664" exhaust
duration @ .006 " tappet lift 284 intake , 282 exhaust
duration @ .050" tappet lift 228 intake, 232 exhaust
Lobe separation 112 degrees
Recommended intake centerline supercharged 112 degrees under 3300 #
Recommended intake centerline supercharged 110 degrees over 3300 #
Recommended intake centerline naturally aspirated 108 degrees under 3300 #

Specs at 112 degree intake centerline

This camshaft is designed specifically for supercharged engines, normally aspirated will require additional charges ( whatever that means )

Thats the specs , its greek to me. Make sure and ask Ken if the 5.0 L timing cover will work with the older waterpump, also ask him about the flexplate versus flywheel for balance. He should be able to figure out the compression ratio as the pistons are - 13 cc and the combustion chamber is 64 cc