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This 427 inch small block weighs 449 lbs with a super heavy 340 resto block. A stock block engine would be another 50 lbs lighter. It has the same power curve as an early Viper engine. It costs roughly the same to build a stroker small block as it does to build a stroker big block. A 451 or 471 big block will make a little more power than than a 427 inch SB, but the SB will weigh less and take up less space.

I'd go SB or Gen3 in an A body car these days. I don't see any reason to put a big block into a street driven A-body anymore. It was great idea 30 years ago but these days there are better options.



It still comes down to cost. Yes, if you're going to stroke whatever you have, the costs are similar, but there is no cheaper way to a torque monster than a stock stroke 440. 440s can still be found cheap (sometimes free)...