Engine build on the brain

The heads are open chamber iron econo W2's. Already spent the money on porting ,rockers, headers and intake so they are staying. Thought I mentioned it, sorry for the confusion


This is why it's hard to do these engines correctly.

Piston guys don't want to make the correct Pistons for it.

This may sound contrary to what I always say, but it's not.

You are better off with a piston that has the deck positive to gain the CR you want than a dome, unless you can use both, like I am. I reduced the dome by ~.175ish and the deck is out .045 IIRC and that gets me 11.01:1 with an .059 gasket.

If I want to get to 11.25:1 I can go to an .039 gasket and get there.

If your CR is where you want it with a flat top, I would NOT care what the quench is. If everything else is correct, quench won't matter except it may be a bit more dirty emissions wise.

Get your cooling system in tip top shape, use a manifold without a heat crossover, get your ignition and carb tuned up and pay careful attention to spark plug heat range.

I'm running 11:1 on pump gas. With a relatively small cam if you actually plot the lobes. So it can be done if done correctly.