72charger

I have an '03 GMC Sierra and I wanna buy an ECU tuner to give me some extra pulling power. What do ya'll recommend? I was told a Jet Stage 1 module would not even be noticable. Anyone tried it? What about the Hypertech or some of the others?

I'm sorry, what I would like to know is what kind of power and torque figures this engine made in it's day. Also, the carburator is allegidly bad. I was going to rebuild it but the local parts place can't get a kit for it. Does anybody know what kind of carburator comes stock on it and if anyone still makes a rebuild kit for it? Thanks for any help.

I am being given a 1969 GMC pickup truck and I don't know much about the old GM trucks. All I know is it has an inline 6 engine, auto tranny, and 2-wheel drive.