Speedo and Muncie M-21 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

smoked68 · 12-09-2008, 09:55 PM

OK my speedo works when it wants too. I have done everything I know to do. New cable and the little gear on the trans end. Now I noticed the other day this gear is not attached by anything, is it supposed to be? There is a round metal housing that bolts to the trans (actually it slides into a hole in the trans and has a locking bolt) then the cable screws to that. The gear is on the inside of that metal thing. Should the gear have something that keeps it in there, like a retainer of sorts?? I hit a bump it will work, hit another bump and it will stop working. The trans was gone thru about a year ago and everything was checked and or replaced so the drives in it should be good. Thank you. Mike

smoked68 · 12-10-2008, 12:48 AM

AH anyone??

12-09-2008, 09:55 PM	#1
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Speedo and Muncie M-21 OK my speedo works when it wants too. I have done everything I know to do. New cable and the little gear on the trans end. Now I noticed the other day this gear is not attached by anything, is it supposed to be? There is a round metal housing that bolts to the trans (actually it slides into a hole in the trans and has a locking bolt) then the cable screws to that. The gear is on the inside of that metal thing. Should the gear have something that keeps it in there, like a retainer of sorts?? I hit a bump it will work, hit another bump and it will stop working. The trans was gone thru about a year ago and everything was checked and or replaced so the drives in it should be good. Thank you. Mike __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom

12-10-2008, 12:48 AM	#2
smoked68 Registered User Join Date: Oct 2006 Location: Rock Hill, SC Posts: 421	Re: Speedo and Muncie M-21 AH anyone?? __________________ 1968 chevy shortbed, Dark Shadow Gray 4 bolt 383 Stroker,Weiand Super Charger, disc brakes, 9 inch, 391 gear, 20" Eagle wheels, muncie 4 speed/ Hurst shifter, 4/7 drop, Hedman midlengths, 3 inch exhaust w/ 2 chamber flows. 1966 Mustang with 306 roller, c-4, 9 inch Detroit locker rear. 1965 Fastback Mustang w/347 stroker, top loader 4spd, 9 inch detroit locker. 1966 Mustang coup, 306 roller, c4, 9 inch. 65 Cobra, 427, T6oo, 9inch, of course. First gen Hayabusa, airbox mod and running 2 exhaust cams.. Zoom Zoom Zoom



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