GM Muncie SM420 Four-Speed Manual Transmission

-Heavy-duty GM Muncie SM420 four-speed manual truck transmission
-Cast-iron case with GM casting No. 591953
-Low “granny gear” first gear design
-Includes attached bellhousing and top cover
-Gearshift lever is not included
-Casting number is associated with earlier Chevrolet and GMC truck applications
-Exact model year, original vehicle and fitment have not been confirmed
-Substantial surface rust, oxidation, dirt and long-term storage wear
-Internal condition is unknown; gears and shifting operation have not been tested
-Offered as a rebuildable core, restoration component or source of parts
-Heavy item; buyers should arrive prepared for removal