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post #1 of 5 (permalink) Old 01-23-05, 10:17 PM Thread Starter
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rejet or new holley?

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?

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post #2 of 5 (permalink) Old 01-23-05, 10:32 PM
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Re: rejet or new holley?

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.
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post #3 of 5 (permalink) Old 01-23-05, 11:23 PM
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Re: rejet or new holley?

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.
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post #4 of 5 (permalink) Old 01-24-05, 01:36 AM Thread Starter
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Re: rejet or new holley?

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
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post #5 of 5 (permalink) Old 01-24-05, 03:39 AM
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Re: rejet or new holley?

Whats you motor and setup? and intended RPM range?

XE Falcon
393 Tremec TKO 9"
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