CA WTB light duty 3 speed transmission from 55 to 66 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**vetnat** · 11-23-2021, 10:58 PM

I am looking for a cheap 3 speed Muncie to rebuild for my truck. The one in my truck is from a passenger car, I would like an actual truck version (solid round end of tail shaft housing vs "scalloped" end). I am looking to pay less than $100 if someone has one sitting around - I have found a few leaky ones here at home for over $250, that I would have to pull myself, seems steep to me for a non-coveted 3 speed transmission. I will be in San Diego from Dec 1 to Dec 5, if anyone there has one. Otherwise, would be looking for one from Saskatchewan - don't want to pay shipping. Thanks.

Pictures of tail shaft differences. The "scalloped" end on the right is what I have (passenger car), the solid round end on the left is what I am looking for.

HOTFUN · 11-26-2021, 12:03 PM

They made a fully synchro version of the 3 speed plus the overdrive three speed. If I were spending money to rebuild it I would go with a fully synchronized truck 3 speed for the ease of downshift into first without coming to a dead stop to avoid grinding first gear. IT was optional over the standard 3 speed. I believe the 67up borg warners were all fully sychro but not sure which year that became the standard.

**vetnat** · 11-30-2021, 09:23 PM

Thanks for reply. A guy has a full synchro 3 speed in my price range near by where I will be staying in San Diego. I will probably go have a look. Need to research how much modification is needed to use it instead.

**bhap** · 11-30-2021, 10:48 PM

If your current transmission has the long tail shaft (about 22" as opposed to about 15"), the only thing you will need is a longer 1st-Rev shift rod - assuming a column shifter. Otherwise you would need to shorten your driveshaft and do the longer 1st-Rev rod. Good luck!

11-23-2021, 10:58 PM	#1
vetnat Senior Member Join Date: Jun 2015 Location: Moose Jaw, SK Posts: 511	WTB light duty 3 speed transmission from 55 to 66 I am looking for a cheap 3 speed Muncie to rebuild for my truck. The one in my truck is from a passenger car, I would like an actual truck version (solid round end of tail shaft housing vs "scalloped" end). I am looking to pay less than $100 if someone has one sitting around - I have found a few leaky ones here at home for over $250, that I would have to pull myself, seems steep to me for a non-coveted 3 speed transmission. I will be in San Diego from Dec 1 to Dec 5, if anyone there has one. Otherwise, would be looking for one from Saskatchewan - don't want to pay shipping. Thanks. Pictures of tail shaft differences. The "scalloped" end on the right is what I have (passenger car), the solid round end on the left is what I am looking for. Attached Images __________________ 1961 GMC half ton, short step, Canadian model. Just starting work on it.

11-26-2021, 12:03 PM	#2
HOTFUN Registered User Join Date: Jan 2001 Location: Lincoln, Nebraska Posts: 2,145	Re: WTB light duty 3 speed transmission from 55 to 66 They made a fully synchro version of the 3 speed plus the overdrive three speed. If I were spending money to rebuild it I would go with a fully synchronized truck 3 speed for the ease of downshift into first without coming to a dead stop to avoid grinding first gear. IT was optional over the standard 3 speed. I believe the 67up borg warners were all fully sychro but not sure which year that became the standard. __________________ '66 CST BBW swb fleet 327 fac ac '67 CST 4x4 swb 327 stepside project '72 Cheyenne K20 50k original '72 Cheyenne Super K20 project '73 Sierra swb 4x4 frame off in paint stage '74 Cheyenne Super swb w/16k actual '71 & 72 Cheyenne K10 4x4 swb's '70 426 HEMICUDA conv SHAKER 4 sp Dana 60 '60 Impala conv 327 PG fac ac loaded 3rd owner '72 GMC K2500 4x4 '59 Apache CST BBW fleetside swb 283 '73 ElCamino SS LS1 T56 true SS bucket tach '76 ElCamino SS 52k survivor '87 Grand National 41k True 2nd to last built in 1987. '86 K30 454 SRW fleetside CA since new '88 Trans Am GTA 39k bought new 2018 DEMON plum crazy @ 840HP! "Need for speed"

11-30-2021, 09:23 PM	#3
vetnat Senior Member Join Date: Jun 2015 Location: Moose Jaw, SK Posts: 511	Re: WTB light duty 3 speed transmission from 55 to 66 Thanks for reply. A guy has a full synchro 3 speed in my price range near by where I will be staying in San Diego. I will probably go have a look. Need to research how much modification is needed to use it instead. __________________ 1961 GMC half ton, short step, Canadian model. Just starting work on it.

11-30-2021, 10:48 PM	#4
bhap Senior Member Join Date: Mar 2006 Location: Pittsburgh, PA Posts: 264	Re: WTB light duty 3 speed transmission from 55 to 66 If your current transmission has the long tail shaft (about 22" as opposed to about 15"), the only thing you will need is a longer 1st-Rev shift rod - assuming a column shifter. Otherwise you would need to shorten your driveshaft and do the longer 1st-Rev rod. Good luck!

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