Intake manifold choices

@canyncarvr The main idea of the return line is not cool fuel though it will stay cooler for a long time. While I don’t know for sure, IMO, I don’t think the fuel in the tank will rise to any harmful or ill acting temp. I honestly don’t think it would reach the evening out temp of any issue or note. Ether the gas tank is to small and you’ll run out of fuel before you spend hours on the road or the tank is large where the evening out just doesn’t come to that equilibrium state. Thanks also don’t see the asphalt as a temperature hinderance while driving.

What do you mean about the recirculating becoming insufficient?

I do think the return line is more in step of not taxing the fuel pump.

Do so use that spacer. I suggest (*I Think*) the thick gasket from Edelbrock. That help me out a good bit for sure.

I went from A TorkerII-340 to a RPM- AG with very noticeable differences in the engines constant performance. The TorkerII-340 was heated, and performance would flatten out after a while. The RPM-AG never lost a step. This was an old combo, way back, 10-1-360, J heads and a Purple 292/.508 etc…. MP’s 12.5 second package. IIRC…