Thread: Tell me about a 400 sb

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I've also heard they can run hot but I don't know much else about them. My brother has it and I've been toying around with putting it in the 82 Z28 this winter as a sleeper disguised a smog dog 305 ,or more likely a motor for the 71 RS. That's if it doesn't need a rebuild.

Originally Posted by 53 Chevy5

I've also heard they can run hot but I don't know much else about them. My brother has it and I've been toying around with putting it in the 82 Z28 this winter as a sleeper disguised a smog dog 305 ,or more likely a motor for the 71 RS. That's if it doesn't need a rebuild.

If you do you must have an externally balanced flywheel/flexplate.