The heat riser just redirects exhaust through the intake manifold to help warm the air and gas coming into the engine making it vaporize easier.

The choke enrichens the fuel mixture by not letting as much air through the carb.

You probably need both, if your climate permits you can unhook the heat riser.


My 1953 Chevrolet
1947.1 Gallery
1972 C-10 1/2 Ton & 1972 C-30 1 Ton