The Stovebolt Site Forums The Shop Area Driveline sm420 speedometer gear (screw in)

HELLO , I looked&looked all over the net TO try and find a replacement speedo screw in gear that looks all steel to me and it seems to be a 1 piece unit from the factory? Does any one know where i can get any info about replacing it or is there a updated version of the old one in plastic? 2 teeth are missing ,it does spin then stops at the break . AS ALWAYYS THANK YOU FOR ANY HELP YOU could give me . BJF

BJF, if you tell us what you are working with, it would help.

Ed

i have a 1954 half ton chevy truck speedometer does not work. it has a sm420 4 speed just changed the clutch,fixed the shifter pins . decided to go at the speedometer problem while the trans was out of the truck. so i unscrewed the bullet looking part out of the cover at the back of the trans.( enclosed drive shaft ) now i need to find a working new or used speedometer gear . this trans has a cover over the two bearings the output shaft showing inside the bell with 4 screws onit.

i am just getting old but the mind does work once in a while. PA had a bunch of parts in the barn up-state. took a ride yesterday. low and behold found the part in one of old trannies in his collection. SAT there for a while remembering the old guy bitchin when the wrench slipped and he busted his knuckles . just would wrap them and keep on wrenching .