CR and pump gas question
I wonder how much the improved chamber shape and quench of the Eddie heads over stock open chamber irons come into play as far as CR is concerned
As mentioned earlier there are no comparisons of identical heads in both mediums.
I'll tell you a simple metric I use to determine combustion chamber efficiency.
How much total timing does it take when your have your **** correct.
Not the clowns who run a plug two ranges too hot, then drown the plug with fuel to cool it. Not the goons who don't think before they build and don't have enough gear, converter and a cam they picked out of a book.
I'm talking about a correctly assembled combination.
Any early SBC head with its horrible plug location that doesn't run on 42 total has an issue. And that's a quench chamber head.
A conventional BBC needs 38-40 total or something else is wrong. It has quench.
BBM has a head with garbage plug location. It needs 38-40 total. Doesn't matter if the head has quench or not.
A SBM, which has a plug location about as good as you can get for a conventional wedge will run with 35-36 total or something is wrong. That is a head without quench.
A Hemi, which doesn't have quench will normally run ar 32-34 total.
My point is plug location is much more important that quench or chamber shape.
