Well a little about it and how I got it. My grandpa bought it new in 73 for his cement business and for towing the 40ft camping trailer. It came stock with the best motor that came in that yr truck. No smog 454 with 4bl 781 heads and turbo400 with 3.73 in rear with the big 14 bolt rear end. Great truck and I bought it from my grandpa and will pass it on to my son when time comes. While back main bearings went bad so yanked motor and disassembled and have been gasket matching the intake to heads. Bought a used 454 and rebuilt it with edelbrock rpm package and boy does it lope hehheheh just the way I like it.Some day will finish #'s matching engine and put it back in.