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Old 09-11-2002, 02:16 PM
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Post Too much Carb?

well im putting an edelbrock 800 on my 383.

the comp ratio is supposed to be around 10:3:1
Is that to much carb or about right?
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Old 09-12-2002, 04:40 AM
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What other components are you using and what type vehicle and rear gear.
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Old 09-12-2002, 01:06 PM
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gm fatburn heads, kieth black flat top pistons sitting on scat rods and 383 crank. 373 in rear with 2500 stall converter.
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Old 09-12-2002, 02:47 PM
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Although the 800 is pretty large size for the engine the fact that it is not mechanical secondaries helps. If you havent bought it yet I'd go for a little smaller carb (maybe 650 or around there).The number one mistake that people make is over carbing, the number one mistake. The engine can only flow so much no matter how effecient it is and anything bigger is overkill (as well as killing throttle response and drivability).
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Old 09-14-2002, 02:51 PM
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. The only reason most people recommend a carburetor on the small side is because a smaller carburetor will increase venturi booster signal. You can use as much CFM as you want as long as there is enough signal to atomize the fuel properly in the boosters. There really is no formual for CFM vs. displacement. I know of some people that use extremely large, or what sounds to be too big of a carb on relatively little engines and they work great.If you are using off the shelf stuff, being conservative is probably better. The vacuum secondary 3310 type holley is the best all around carb for a variety of reasons, and it's hard to go wrong with it. If you have big bucks, then you can step up to a custom modified carb from Da Vinci, ect--- but all carbs have to be tweaked for your particuar combination
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