This is about the best bargain in terms of a big block. It isn't quite a short block, but it has an all forged bottom end and a low compression ratio that is just asking for a supercharger, but makes plenty of hp as is. http://store.summitracing.com/partde...2&autoview=sku It's GM's 454 H.O. GM has a 502 long block for a little less, but this one is almost complete.