The Truth about 318s

A lot, and I mean A LOT of 360's have 7.8:1 compression. Mine has the 8:1 pistons and as a result they sit pretty far down the hole. The magnum heads woke it up a lot since the chambers are more around ~62cc instead of 72-78cc.

With the low compression, it would want more ignition timing and have a little less low end torque. I have to run my initial timing between 10 and 12 degrees BTDC.