Early 273 intake problems

Before bolting on the factory Thermo-quad, I'll be breaking in my current 340 build using a 318 '72 factory small block two-barrel intake manifold and a factory 318 1972 NOS Carter BBD carb, should be interesting.

I did the same thing back in the '70's when I built up my 273 with the 600 CFM double pumper, first put the stock 273 Carter BBD two-barrel on the Tarantula manifold using a fabricated carb spacer/adaptor to break in the motor on the street.