Can anybody tell how hard it would be to change a automatic transmission in a 1978 GMC pickup truck to a manual transmission.

Just Asking., November 2006

I would imagine quite a job !! The output from the crankshaft on the engine will be rigged with dimensions for connection to a torque converter and not a manual clutch, the bell housing bolt plate on the engine will have to be swapped, gearbox mounts, throttle and pedal box in the cab, shifter mechanism and interior trim, kick down control on carb.

Hope this helps

Steve

SB, November 2006