340 improvements with dyno numbers

yellow rose said

You keep saying "pop up" piston but they were ALL flat tops. All of them. Just be cause the piston is out of the bore, doesn't make it a pop up. I love the 60's and 70's as much as th next guy but damn, we have got to clean up the lexicon. It took decades to kill off the 3/4 race cam crap and it still hear it now and then.

They all had flat top pistons.

Click to expand...

I never said they didn't. Pop up as in they "pop up" out of the hole because they did. Dome pistons are dome pistons. Dish pistons are dish pistons. Flat top are flat top. And they can all pop up out of the hole.

I don't believe every magazine article of course. Like I mentioned the episode of horsepower tv lol. But I think they are fairly close on with this one. I'm surprised you can't get that engine to run on pump gas. I run 10:1 on iron heads and have no trouble. You mention it's got a short cam, whats the cam specs? With aluminum heads you should shoot for 8.5 DCR. Depending on gas available, elevation, etc etc. of course.