gbody performance

I just picked up a 307 Chevy not Olds thinking it was a 350 the guy told me it was a 350 and I looked up the casting Numbers (3970024) comes back to a 69-73 Chevy 307, either way, I want to Put it into my 81 Monte Carlo 229 v6 I know I need to replace everything but my goal on the 307 is 400hp...

Hey all, I am brand new to the forum but have used the information on here many times throughout the course of my G-body build. I have a 1986 Olds 442. Bit of a back story, my grandfather bought it and drove it for awhile before my father purchased it from him. When I graduated high school it...