The mechanical pump is just a stumbling block for the Holley black pump, I'd bypass it.
The big Holley is on it's way. Ray took it completely apart and replaced all the gaskets, two new needle/seat assemblies and cleaned it out.
We both spent about an hour scraping all the stuck gaskets (they were the blue no-stick variety) from all the parts.
The float adjustment gaskets were stuck in place as well, and of course the gaskets on the bowl screws had to be removed with a pocket knife.
Reminded of the good old days when I had my 1970 Roadrunner. I wore the bowl screws out on several big Holley carbs racing that car!
We hooked it up to my electric pump and set the floats, pumps worked fine, but didn't run it on my engine. Have fun with it!.......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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