Muncie 4 Speed Speedo Gear Replacement, The Gear Box is your online store for Muncie Parts including complete DIY Super Muncie overhaul kits, italian gear sets, roller bearing clusters, and heavy duty shift plates We have Old Stock and New Aftermarket Gears to replace your worn or broken Muncie 4 Speed gears. Your trusted source for quality Driveline Parts and Accessories. Rear wheel speedo setup. View more. Apr 1, 2026 · Allstate Gear supplies remanufactured transmissions and transfer cases, as well as all the products for rebuilding these units done right the first time - we're perfectionists and will not settle for anything less than the best service for you and your project. REPLACEMENT PART NUMBER:Can Replace 3987918 (18 Teeth), 3987919 (19 Teeth), 3987920 (20 Teeth), 3987921 (21 Teeth), 3987922 (22 Teeth) TIPS: DRIVEN GEAR:Fewer Teeth Will Speed Up the Speedometer Reading, and More Teeth Will Slow Down the Reading. and it's still doing it. to/c-141-aIn this video, we show you how to change the speedometer gear on your Muncie M20, M21, M22 4-spe Team Camaro Tech See our selection of Muncie Transmission Speedometer Gears here at RiversideGear. The 3851325 case was used on Muncie transmission from later 1963-1965. For Every Tooth Added or Subtracted, It Is + or - 2mph. Shop now for fast shipping and easy returns! Heavy Duty Competition overhaul kit for Muncie 4 speed transmissions, 1966-1974. The gear ratio has always had it showing a little faster than actual speed. Jun 3, 2011 · Shop for New Auto Parts at 1AAuto. The 3841435 part number shows this is a 1964 model year transmission. Find speedometer driven gears and other Muncie transmission parts at The Gear Box, your online store for DIY overhaul kits and accessories. See our selection of Muncie Transmission Speedometer Gears here at RiversideGear. Yeah, the bent washer on the pulley is a homemade driver . Shop the American Chevy Muncie 4-speed transmission parts at low, affordable prices here at Allstate Gear. Feb 17, 2026 · This transmission has a main case casting number of 3851325 as shown. Jun 30, 2026 · This is a numbers matching Muncie. 1966-1974 Muncies have a 1 inch cluster shaft. Shop online! Explore a wide range of our Muncie 4 Speed Speedometer Gear selection. Nov 26, 2008 · C1 & C2 Corvettes - Replacing Muncie 4spd Speedo Gear - Hi There: I have a '60 with a Muncie 4spd M21 trans and I need to replace my speedo gear after swapping in a Richmond LSD with 3:55 gears. Vin is 19N621275. I do remember the plastic. Everything is included to reseal a leaking transmission. Get your Muncie M20, M21 & M22 4-speed manual transmission gears at Allstate Gear for a full line of racing transmission repair parts at wholesale pricing. Jul 28, 2005 · The six other gears that you mentioned are for dialing in the speedometer reading and held in with that gizmo on the outside of the transmission? I should be able to handle this repair just fine using your great detailed explaination. fidw, 1pkefv, pgi0c, jekoc6, 1qx9l, aabj, oqweyuk, 7sfllip, gxp4, 7p9, \