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1947 3100 transmission #1373218 08/13/2020 5:06 PM
Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins B bucktruck 'Bolter
bucktruck 'Bolter B Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins	My 1947 3100 pickup transmission has the floor shifter. It is actually 3 forward speeds with reverse. My understanding is this transmission is factory original to this truck. How can I learn what transmission (name/model) is in my truck? Does the transmission have this information stamped on it somewhere? Thanks, Ray

Re: 1947 3100 transmission bucktruck #1373228 08/13/2020 6:39 PM
Joined: Sep 2001 Posts: 29,262 Jarvisburg, NC, USA tclederman Bubba - Curmudgeon
tclederman Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,262 Jarvisburg, NC, USA	The GM part number is shown here. Maybe someone knows what the casting number is on the case? There might also be a date casting code on the case? 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.

Re: 1947 3100 transmission bucktruck #1373247 08/13/2020 9:17 PM
Joined: Jul 2000 Posts: 2,115 Mill Bay, BC, Canada G Gord&Fran Insomniac
Gord&Fran Insomniac G Joined: Jul 2000 Posts: 2,115 Mill Bay, BC, Canada	Check the 1947 vehicle information kit: https://www.gmheritagecenter.com/do...hevrolet-Trucks/1947-Chevrolet-Truck.pdf Should be a serial number stamped on the transmission somewhere. Prefix code indicates manufacturer. Gord 🇨🇦 ---- 1954 1/2 ton 235 4 speed

Re: 1947 3100 transmission bucktruck #1373290 08/14/2020 12:57 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	Are the top 2 gears synchronized? 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: 1947 3100 transmission EdPruss #1373323 08/14/2020 3:55 PM
Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins B bucktruck 'Bolter
bucktruck 'Bolter B Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins	I'm not sure. I have not taken it apart.

Re: 1947 3100 transmission bucktruck #1373326 08/14/2020 4:11 PM
Joined: Nov 1995 Posts: 5,470 Skyline, Alabama John Milliman Bond Villain
John Milliman Bond Villain Joined: Nov 1995 Posts: 5,470 Skyline, Alabama	Buck -- as for Ed's question, do you have to double clutch all three gears when you drive it? If yes, then they're not synchro'd. ~ John "We are not now that strength which in old days Moved earth and heaven; that which we are, we are" 1948 International Farmall Super A 1949 Chevrolet 3804 In the Legacy Gallery \| In the Gallery Forum 1973 IH 1310 Dump 2001 International/AmTran RE3000 "Skoolie" 2014 Ford E-350 4x4 (Quigley)

Re: 1947 3100 transmission EdPruss #1373327 08/14/2020 4:21 PM
Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins B bucktruck 'Bolter
bucktruck 'Bolter B Joined: Aug 2016 Posts: 84 USA - Georgia - Warner Robins	I checked the service manual and it is a 3 forward - one reverse selective syncro-mesh transmission. I think gears 2 and 3 are sorta synchronized. Manual didn't give any name for transmission or model numbers. ray

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