big block lacks power - Corvette Forum
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post #1 of 1 (permalink) Old 06-11-2015, 11:07 PM Thread Starter
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Join Date: Jun 2015
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big block lacks power

I purchased a 454 c.i.big block and turbo 400 tranny from a guy who used it to race on the track. estimated horsepower 450 to 500.
We put the engine in a1978 street vette but the but the tranny did not fit. We are using the stock turbo 350 trans. The engine lacks power off the line but runs great after reaching 50 mph. I am thinking it may need a stall converter but not sure. Also, would not know what size if it does need one. Any suggestions on what may be the problem. Engine has rebuilt rochester quadrajet carb, new wires, cap, rotor, plugs. Thanks.
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