Ok so here is my scenario. Im 17 and have rebuilt a few motors for my truck(85 chevy k10 1ton running gear 4:10 gears stock 350 and a 4 speed sm465) I am about to trade a pitbike to a guy for a 400 SBC. The motor is fine and is bone stock with 75k on it. I know how to rebuild an engine but not so much make power out of it by putting the right parts on it. I have a budget of about 1200-1500$ I honestly am more worried about torque then horse power I want my truck to be a "stump puller". I don't really care about how comfortable it is on the street as long as it is still a street able truck. of course I could buy a big block but put that aside and stay on topic with the 400 please. Im sure there is some info I missed out but can some people just put in there 2 cents. I already have a performer intake and 650cfm carb and headers for it. Thanks for any help.