gros16

i ahvea 750dp and want to upgarde to 850 or 900 or would it just be cheaper to rejet it what are teh advantages of each?

falcon coupe

You need to know if your engine needs that carby, the best way to tell is to put it on a dyno, if the engine needs 850 cfm, putting more fuel into a 750 will not help it.
Where i go (Halam Performance) they have 3 or 4 carbys laying around, while on the dyno they keep going up in size untill they find what your engine needs.

Work Horse

I agree with falcon coupe. Putting larger jets in your 750 will not make it a bigger carb, just make it run rich. Putting a bigger carb on will not improve your performance unless the motor can use it/ needs it. Time for some trial and error carb fitting or a trip to a good dyno tuner.

gros16

ive gota 1000cfm+ here lol giv etahta wack but yea i think i shouble be able to get hold of a fair few holley and other carbs

TruBlu351

Whats you motor and setup? and intended RPM range?

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XE Falcon
393 Tremec TKO 9"