Chevrolet say with stock production parts, GM steel crank, selected 'Pink' con rods and forged pistons and a proper selected valve train the small block Chevy V8 is ok at 7800 rpm. I have H beam Eagle rods and crank all roller cam proper pistons and I limit it to 7000 rpm but feel it could go higher, I would say 5500rpm is too low but it all depends on whats in there.
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