318 budget build

66jim said

Use 0.028 head gaskets and advance cam 4 degrees. Take a closer look at the heads and the port job that was done, I would not trust pervious owners work.
Do a backyard valve job (lapping compound) when the heads are apart. These
all are very low $$$.

Click to expand...

closed chamber heads; plus
.028 gaskets, plus pistons .040 in the hole makes a Q of .068; smack dab in the middle of the no-go zone
Do you think this will be OK with OP's stated 9.18Scr and the
Oregon 1006 ;260/264/110+2/ cam? nice cam btw for non LA heads; with42* overlap,works better with headers

Ima thinking

Static compression ratio of 9.18:1.
Ica of 58*
Effective stroke is 2.70 inches.
Your dynamic compression ratio is 7.66:1 .
Your dynamic cranking pressure is ........................ 153.17 PSI.
V/P (Volume to Pressure Index) is ......................... 119