The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - TH400 to 3-4 Speed???

badone07 · 01-26-2005, 03:47 PM

Should be a direct swap with a SM465 4 spd. You would still have to change flexplate to flywheel. Clutch linkage(z-bar type) or swap to hydraulics. Add a pilot bearing to the crank. Hole in the tunnel for the shifter(toploader type trans). Then swapping the steering column. Driveshaft should be fine. Just depends on if the 400 has a slip in yoke or bolt on, to whether or not you would have to remove the slip yoke from the universal joint.

For performance type trans, I would look for something else though and do the necessary mods for fitment.

01-26-2005, 03:47 PM	#2
badone07 Project 2 Resume Join Date: May 2004 Location: Jim Thorpe, PA Posts: 884	Should be a direct swap with a SM465 4 spd. You would still have to change flexplate to flywheel. Clutch linkage(z-bar type) or swap to hydraulics. Add a pilot bearing to the crank. Hole in the tunnel for the shifter(toploader type trans). Then swapping the steering column. Driveshaft should be fine. Just depends on if the 400 has a slip in yoke or bolt on, to whether or not you would have to remove the slip yoke from the universal joint. For performance type trans, I would look for something else though and do the necessary mods for fitment. __________________ John 1984 C30 Chevy Crew Cab Dually 1998 Jeep Cherokee 4x4 2004 Chevy Trailblazer 4x4 (wife's) 1970 Mustang FB fully tubed (getting 521 BBF & powerglide) 1978 Nova 2dr (going BBCaddy & S.P. th400) 1984 Monte SS (circle track car)