Reply to "Upgrading Carbs for GT5"

bosswrenchMember

Sticking a 750 double-pumper on your motor will instantly give you about 30 more horsies to play with, and drop your gas mileage to maybe 12 or 14 mpg, unless you re-jet it on a dyno that loads the engine. Throttle response will be slower than you got with the 600. Double-pumpers are considered racing carbs & Holleys are always jetted rich as received anyway- they have no way of knowing what your intentions are. Finally, a 750 is a big carb for a 351C unless its been heavily modified.

4/21/029:09 AM

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