i have a buddy whose dad has a complete (exept for cam and intake but otherwise complete) 400 SBC and the engine shop that he went to told him that with his parts that he has it will have around 500 hp if thats even plauseable, but he wants 700 for it, is it worth it, if i do get it i will be putting the RV cam and intake from the 327 that i have in my truck right now, i finally got a job so i can do all this so i w3as just asking if it was worth it.