When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
As for 500hp? I am really close to 500 crank with the GTA in a NA LT1. I need a larger cam, but the AFR195's can support it. If I had a 383, or 396 short block I'd be there all day long.