Carb size 750 or 850?
#1
Carb size 750 or 850?
I'm building a 347 stroker with
225cc AFR Heads
Lunati Cam retrofit - Duration 300 int / 310 exh, Lift .560 int /.576 exh
Edelbrock Performer Air-Gap
And would like to know what size holley carb you guys suggest.
Its going to be a street/heavy strip car
Thank you in advanced
225cc AFR Heads
Lunati Cam retrofit - Duration 300 int / 310 exh, Lift .560 int /.576 exh
Edelbrock Performer Air-Gap
And would like to know what size holley carb you guys suggest.
Its going to be a street/heavy strip car
Thank you in advanced
#5
#6
http://www.summitracing.com/search/D...e/?Ns=Rank|Asc
About the same money, or slightly more, and you'll get a MUCH better quality carburetor with far more tunability. Holleys are made of zinc, which is potmetal....so they weigh a ton and can get more easily damaged, whereas the QFT(or equivalent) are made from AL alloy. And they all come with at least good downleg boosters, some with annular...whereas most Holleys come with very old style and less effective straight leg boosters.
About the same money, or slightly more, and you'll get a MUCH better quality carburetor with far more tunability. Holleys are made of zinc, which is potmetal....so they weigh a ton and can get more easily damaged, whereas the QFT(or equivalent) are made from AL alloy. And they all come with at least good downleg boosters, some with annular...whereas most Holleys come with very old style and less effective straight leg boosters.
#8
QFT's have better boosters, with 2 booster options(downleg or annular). Holley's are usually just straight leg(crappy), sometimes downleg(rarely annular). The Holley 4150HP you can change jets or air bleeds, standard Holley's jets only. All quick fuels come with changable jets, air bleeds, idle feed restrictors and power valve channel restrictors. All QFT's are also pre tapped in the metering block for changing emulsion with restrictors(just drill out the emulsion hole and drop restrictors in), and some come pre-set with emulsion restrictors already.
That and the metering blocks are billet on the QFT's, the throttle plates are also billet, and the bodies are cast aluminum. Holley's are made of zinc, which is about 2-3x heavier and zinc is basically pot metal(cheap and easily damaged). QFT's also come with actual glass sight plugs for setting float level.
And QFT has good customer service.
That and the metering blocks are billet on the QFT's, the throttle plates are also billet, and the bodies are cast aluminum. Holley's are made of zinc, which is about 2-3x heavier and zinc is basically pot metal(cheap and easily damaged). QFT's also come with actual glass sight plugs for setting float level.
And QFT has good customer service.
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