I have an '89 K1500 Cheyenne 4x4 with a tired 305 and the 5-speed manual HM-290 transmission. I am rebuilding a '98 350 Vortec to replace the 305, and think that I should upgrade the transmission for the Vortec's increased power and tourqe. I don't plan to drive this truck hard, but reliability and the ability to pull a trailer is a must.
Currently the transmission is working fine and there have never been problems with it.
I'm hoping that there is a Chevrolet or GMC truck out there, any model year, that I can salvage the transmission (and transfer case if needed) and bolt it into my 1989 chassis. Can anyone suggest a transmission upgrade that will bolt right in??
Any reply greatly appreciated, Thank you, Kevin