My thought is that this modification was not done by a professional but the modification parts were purchased from a company that maybe advertised a performance purpose. Most likely a multi-carburetor setup. Attached is a picture showing external-added manufactured (not shade tree) parts.
The throttle assembly is ruined. The air horn and bowl are surprisingly not warped yet. I'm currently measuring and studying the other Rochester B weak link, the power piston and it's well. My plan is to test another 7015103 so I can have a comparison baseline before I switch over to test a few Carter models.
My first test of the B was initially decent but I think the power piston stuck in the up position when I parked the truck for the night. Very hard to start the next morning.
Last edited by buoymaker; 11/16/20205:30 PM.
"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."
