Thread: Roush 427R and Quick Fuel QFT 750 jet sizes?
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Old 11-02-2013, 07:35 AM
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Join Date: Dec 2001
Location: Castalia, Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
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Quote:
Originally Posted by ha_pe_1968 View Post
Primary main jet:72
Secondary jet: 84
Idle air Bleed: 73/73
Hi speed bleed: 35/35
Pri Nozzle: 31
Sec. Nozzle: 31
Needle and seat: 110
Power valve: 9.5

9.5 seems high for a PV. I believe most come with a 6.5. I run a 2.5 in my EM and a 4.5 in my ERA.
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