Quote:
Originally Posted by Blacdout96
So if it smoothed the engine, allowed it to prevent it from starving the engine, etc. how come GM didn't do it on production SBC?
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My opinion on that is because they lose the traditional sound and SBC characterizes Sound, torque curve (along with changing all their tooling such). You do give up some low/midrange torque. If you are running a single plane intake or high rise that increases the plenum volume this does cure allot of the starvation issues.
the 4-7 swap isn't going to give you big gains, all else being equal, let use a fairly stock 250-275HP engine you may pick up 10-15HP at best, it not going to make you run like an LS1, an LS1 has allot of other things that allow it to rev the way it does, light reciprocal weight, short stroke, eliminated crank pressure etc.
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