I've never been happy with any of the 1975 carbs that used the auxilary power piston set up. Even correctly rebuilt they often don't work well. Probably why they were only used one year and the aux power piston, rod, jet and oddball APT system was replaced with the later style APT that was retained until the M/C solenoids and TPS started showing up.....Cliff
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If you can read this, thank a teacher. If you can read this in English, thank a Veteran!
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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