Eddies Vs 915 J's

frosty_the_punk said

This thread is about swapping cylinder heads. If I need more compression, i'll get it during the head swap.

please keep in mind this 318 isn't a junkyard special, it's fully balanced with a steel crank, H beams and forged pistons with dome tops and a zero deck.

Like I said, current compression ratio is 10.2:1 with the J heads.

I could easily get 12:1 with the eddies, but I don't think that will be necessary.

Click to expand...

How do you have zero deck with a dome piston? In your orig post you said you dynoed at 350 HP at 5700 rpm.... Then you said you want to get to get 430 to 450 HP.. I don't know how your gonna gain almost a 100 HP over a already decent set of heads, unless you turn more RPM. Its a small displacement engine, its gonna be a high rever to get anywhere near 450 HP.. I think a custom grind solid cam is the best bang for the buck in this situation....