Search:

OK, Edelbrock 60679 heads, KB 206+030 pistons, RPM intake, 850/870 carb, large tube headers through the mufflers, 10.15:1 SCR, 0.050" squish and CompCams 288BR8 (34-711-9) solid roller tappet...

Couple of ways to go. You could change the heads for #60669, 95cc and get a 9.5:1 SCR with the pistons you have. You'd have to come back some on the cam. Or you could change pistons to, for instance,...

Piston compression height is 1.752", rod length is 6.605", stroke radius is 1.925", so the stack is 10.282" (or thereabouts, measure it yourself). The block deck height of a '68 - '71 block is...

60679 heads?

It wouldn't matter if everybody on this board had used those pistons and those heads. It's still a one-on-one set of circumstances every time you screw a motor together. Follow the instructions given...