Posted by MeanGene1 on January 31, 2011 at 20:47:52 from (70.231.132.252):
In Reply to: F-600/391? 4Vor 2 V ? posted by j hitkemper on January 31, 2011 at 19:40:53:
Holleys are actually very easy to freshen up, you never did say how it actually runs now. Very rare that anything is actually wrong with one unless the gaskets dried out from sitting, and the newer gaskets don't shrink like the old ones. The main thing is to keep the governor functioning, if it's working right, let it be- just run some cleaner through it, set the acc. pump to spec, adjust the idle screw with a vacuum guage. If it's a 391, IIRC the governor would be at about 3400, and no need to spin it over 3000. They're actually pretty trouble-free engines, EVERY one I've seen that was grenaded had a car-type Holley on it without a governor, since the old carb needed a touch up, the owner priced a new governor carb and feinted, instead of putting a kit in the old one, and the drivers started running it at 4000+ rpm. They WILL grenade if over-revved, they CANNOT rev like a car 390- the bottom end parts are very heavy, and the large-stem valves are also heavy, and the valve springs are not for high rpm. Shift it at 3000, keep your foot out of it, and the mileage won't be that bad, and it'll chug along for a long time
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