Thread: Vacuum advance on 427/428 cars
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Old 03-27-2010, 03:58 PM
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Quote:
Originally Posted by PANAVIA View Post
Vac advance will yield better MPG and cooler running at part throttle cruising.

There is a summit electronic FE distributor that is made by mallory--

IT may be worth a look.
I agree. I found this out with my 427 Vette that has a fairly radical motor. I put a vacuum advance unit on it and the summer running temperature dropped 25 deg before my eyes immediately. With L-88 heads, 12 pistons and a 252 deg @ .050 mechanical cam it will start from cold and actually somewhat idle on the fast idle cam. Gas mileage - well that's another subject. I didn't get much positive feedback out of Keith Craft when I started to mention vacuum advance.

Dan
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