Hi I am building up a GMC 302, and sadly the exsisitng manifold is shot. Does any body know if there are any custom intake manifolds on the market, it has to be an up draft as i am a coe. Its a single port.
One brain spasm is to flip a downdraft intake. Fabricate/adapt for the carburetor and heating. Here is a picture of a 302 big port 2 barrel intake from ebay.
"Adding CFM to a truck will only help at engine speeds you don't want to use." "I found there was nothing to gain beyond 400 CFM."
