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wanted - speedometer gears for 49 1/2 ton 4 speed #1222747 06/26/2017 12:42 PM
Joined: Jun 2014 Posts: 152 japan D Drmike 'Bolter
Drmike 'Bolter D Joined: Jun 2014 Posts: 152 japan	does anyone have a matching set? i need both driven and drive gear as mine are stripped bgtw my truck is a 4 speed but was wondering does a 3 speed set fit physically? i know the reading will be off Last edited by Drmike; 06/26/2017 1:14 PM.

Re: wanted - speedometer gears for 49 1/2 ton 4 speed Drmike #1222750 06/26/2017 1:17 PM
Joined: Jun 2011 Posts: 5,096 Longmont, CO E EdPruss Crusing in the Passing Lane
EdPruss Crusing in the Passing Lane E Joined: Jun 2011 Posts: 5,096 Longmont, CO	Speedo shop should have gears, however, might be best to search shops in US. Ed '37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires. '47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle. '54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed. '55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.

Re: wanted - speedometer gears for 49 1/2 ton 4 speed Drmike #1222768 06/26/2017 3:35 PM
Joined: Jan 2001 Posts: 5,337 Snohomish,WA,USA P Pre '68 Dave 'Bolter
Pre '68 Dave 'Bolter P Joined: Jan 2001 Posts: 5,337 Snohomish,WA,USA	3 speed gears will not fit a 4 speed. See the USA in your vintage Chevrolet! My Blog

Re: wanted - speedometer gears for 49 1/2 ton 4 speed Pre '68 Dave #1223798 07/04/2017 7:01 AM
Joined: Jun 2014 Posts: 152 japan D Drmike 'Bolter
Drmike 'Bolter D Joined: Jun 2014 Posts: 152 japan	thanks guys, 3 speed speedometer gear set looks like it will physically fit.....is the shaft a different size?

Re: wanted - speedometer gears for 49 1/2 ton 4 speed Drmike #1223820 07/04/2017 1:30 PM
Joined: Sep 2001 Posts: 29,270 Jarvisburg, NC, USA tclederman Bubba - Curmudgeon
tclederman Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 Jarvisburg, NC, USA	The gear that screws into the transmission housing looks to be the same for 4sp/3sp, but the grooves will most likely be different for 3p vs 4sp? Also, I dimly recall that the gears on 3sp/4sp internal shafts/couplings are different internal diameters? Maybe someone will confirm/correct and post links to some photos? Tim 1954Advance-Design.com 1954 3106 Carryall Suburban 1954 3104 5-window pickup w/Hydra-Matic The 216 and early 235 engines are not "splash oilers" -- this is a splash oiler.

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