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Old 01-17-2020, 09:50 AM
Cliff R's Avatar
Cliff R Cliff R is offline
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Join Date: Nov 2000
Location: Mount Vernon, Ohio 43050
Posts: 18,153
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I get a few AFB's sent here from folks thinking they are Quadrajets. Not soliciting for any of that work, don't want it or any Tri-Power work either.

If/when this happens I use one of the pumps shown below, the larger is the 3/4" version, the smaller is the more common size typically found in AFB's used on Pontiac engines in the mid to late 1960's. I purchased some in both sizes over 10 years ago and not even sure where they came from, but they have been 100 percent successful in this new fuel.

Not trying to start a debate over pump cup preferences or anything of the sort, but I sought out these pumps after having a leather pump from a NAPA kit fail in less than 30 minutes!

It was exactly like the one in the pic above with the reddish/purple leather material. At a minimum with any carb I do here they are filled with fuel from an electric pump, and I work the accl to insure pump shot. The one that failed worked fine as soon as it swelled up a bit, good to go....WRONG. Went to lunch, came back, moved the throttle arm a few more times before dumping the gas out to dry it up for shipping...NOTHING. Not even a hint of pump shot. I removed the top and the seal was all buggered up prompting me to go in another direction........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),