[QUOTE=Dragncar;6261800]
Quote:
Originally Posted by blueghoast
This engine right here. Was it pump gas at 11.98 -1 CR ? The highest CR of any pump gas Pontiac I know of was 12.3 -1 and it had a very specific cam and aluminum rods.
Don't think any pump gas Pontiac will live long or make the power it should at 13-1 . Certainly not without the exact cam it needs and steel rods do not help.
Was this a E-85 engine ? If the heads were close there is some reason this engine did not make more power than your new SM engine is it had the right cam and fuel in it. Its over 1.5 more static CR. Significant enough you should see it.
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Something I just noticed, The comp is 11:98:1 sorry bought dat.
You need to look at a set of the SM heads and evaluate them compared
To the E-Heads. There truly is a lot more meat in them for more air.
The valves and the seat are top quality they come with tall valves And
My E-Heads had one seat on the intake that far from being seated in place.
Had to take care of that. That could happen to any manufactuier though.
Can't remove all the push rod bulge in the E-Head but did with the SM's.
Point is before you drag them in the dirt take a good look at them
before you judge them, They really are a decent head I mean if I can
make power with less comp, smaller valves and a little less flow and just
two day's of port work and I'm no proffessional then I'm impresed by it.
So take a look and compair your self before you judge them.
I know sometime soon a good porter will do a set and maybe then will
know just what the potential they can make or not.
GT