i got my cam put in and the engine took a crap on the lower half now i don't think i have a choice in making it into a 355 or 383 now i have it dyno tuned by pcm for my cam now but i still have stock heads so if i do bor it out to a 355 or 383 (most likey 383) how will it run will i need to get it reprogrammed, im sure i will with the 383 but what about the heads can i keep stock cause i have no money to get them yet check my sig and let me know plz help me on what i should do thanks guys

 

also whats my stock C.ratio 10.5:1 ??? do i keep it the same does it change ?? or whats do i do about it?