360 LA installing Promaxx Aluminum heads

360 LA installing Promaxx Aluminum heads

qkcuda said
Are the two bowl gaskets the same for the 625 and 750 carbs? I could only find one listing for each.

Looks like they have 2 calibration kits P/N 1921 & 1931. You will want 1921 as 1931 has jets and rods for a fatter than stock calibration.
Correct lean kit: Demon Carburetion 1921 Demon Carburetion Street Demon Calibration Kits | Summit Racing

For the throttle body gasket it looks like you will need P/N 1926 as 1914 call specifically for the 750.
Correct TB gasket: Demon Carburetion 1926 Demon Carburetion Carburetor Throttle Body Gaskets | Summit Racing

I could not locate a separate number for the 750 air horn gasket so I think that part is the same. I can confirm P/N 1925 worked fine on my 625.
Correct Air Horn gasket:Demon Carburetion 1925 Demon Carburetion Street Demon Air Horn Gaskets | Summit Racing

FYI they sell rebuild kits too: Demon Carburetion 1920 Demon Carburetion Carburetor Rebuild Kits | Summit Racing