Chevy 350 OEM 4bbl aluminum intake with Brzezinski phenolic 4bbl to 2bbl adapter plate.

This is the only way to go to maximize cooling. The aluminum dissipates the heat and the carb spacer does as well plus raises the carb up helping further.

Google this: Brzezinski castheads.com/manifolds-carb/carburetors/adjustable-carburetor-spacer/

I used this configuration for years on my demo derby motor with success.

Will ship UPS Ground.

Thank you - Jay