[jerry455]

I had a block heater, replace core plug, that GM used to sell. I had it in a 350 Chevrolet motor that had no heat cross over underneath the carburetor. 1986 Corvette aluminum heads and built a homemade ZZ3 engine. It was cold blooded in all but the summer. It was my daily driver, 1986 GP, and I plugged it in a lot for several years. It worked great as there would be no hesitation or stumble as it warmed up. Fue injection would have helped but I wanted to run the stock electronic Q Jet.