Be careful, 540 series trans came with long and short input shafts, new shafts are no longer available, short input shafts are harder to find. They came on IHC, Chevy, GMC, Ford, Dodge, Stude, etc, all with different mounting bolt patterns. Most yards don't know what they are, just need to get in the yard and search for oneself. Al top cover, 4 shift rails quicker sway to ID. Top of Al housing, steel pins shifthandle pivots on, pins get loose in housing-watch for.

Nice close ratio trans. Some available as OD in 5th, however, then large gap in ratios, awkward w/o 2 speed rear.

I put one in an early Bronco, worked really well, much better than the original 3 speed.


Ed

Last edited by EdPruss; 05/28/2020 5:00 PM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.