For Sale...Chevy SM420 4speed Trans Sept 9, 2013 21:58:49 GMT -6 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by crossfire on Sept 9, 2013 21:58:49 GMT -6 I have a GM sm420 4 speed trans, bellhousing, starter, flywheel, clutch, & pressure plate. This is the trans with 7.00-1 first gear. All original stuff. $100 502-682-9001