85T/A
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Sep 19, 2011
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hey i just bought a goodwrench 350 with 260 horse should i throw my 600 off my 305 on it or a 750 that ive had sittin round for a while??? i do have a dual plane wieand intake it
Fast355
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Quote:
I think on that low output 350, you will like the 600 cfm better.Originally Posted by 85T/A
hey i just bought a goodwrench 350 with 260 horse should i throw my 600 off my 305 on it or a 750 that ive had sittin round for a while??? i do have a dual plane wieand intake it 
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AlkyIROC
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Apr 29, 2026
Carb calculators give a minimum requirement. Larger carbs give a bit more power and a flatter power curve.
As for mileage, not all carbs are the same. You can use 3 different model 750's and get 3 different performance and mileage results.
As for mileage, not all carbs are the same. You can use 3 different model 750's and get 3 different performance and mileage results.
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Try 'em both, see which you like better. A rarely use carbs smaller than 750 CFM on anything 350ci or larger, especially with a dual plane (since any given cylinder only "sees" half the carb). You didn't mention if either of those carbs is a double-pumper. If they're both vacuum secondary it's pretty much impossible to over-carburate.