The RPM q-jet was carefully recalibrated and prior to testing. The APT can be used to fine tune part throttle mixtures, it is a really nice feature. The power piston spring(s) are not really much of a factor when tuning a q-jet. Use the strongest spring that will have the power piston stay down at idle....Cliff
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https://cliffshighperformance.com/
73 Ventura, SOLD 455, 3740lbs, 11.30's at 120mph, 1977 Pontiac Q-jet, HO intake, HEI, 10" converter, 3.42 gears, DOT's, 7.20's at 96mph and still WAY under the roll bar rule. Best ET to date 7.18 at 97MPH (1/8th mile),
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10-08-2004, 09:10 PM
Hybrid Mode
