69 camaro running in the 10s

[70 ls6 convert]

Well i tore down the ram jet 502,what a big bore ,ive decided im gonna build that for my car,i dont want to run the fuel injection unit i want to run a nice intake and carb,its an older 502 looks like 2000 build,from arizona speed and marine,the bore is 4.5 inches and the stroke is 4 inches, could i put a 4.25 crank in this engine,the heads look pretty nice alum 12363391,the rods are pressed in,i have it all torn down, every thing looks realy good,the pistons dont have a part number on them but they look low compression,what i was thinken is higher compression bigger cam and a 4.25 crank,any advice would be greatly appreciated Thanks again kris...