Im new here, Otis is my handle, I live in az. Nice weather now but couple of months it going to be hot. Im working 1985 silverado,we are 2nd owners got from a neighbor in 1991. This truck has orignal paint and never been wrecked and is not trailer queen we have over 230000 miles on her. I looking to put a sp383 in the truck. I have 7004r tranny now. I hoping this will be enough trans for this engine 435 hp 445ft/lb t. All help will be appreciated.