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Refueling the Past

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Archie
“46 Texaco”
Bentz

has a #1 ranked (on Amazon) book on Automotive History!

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REFUELING
THE
PAST



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1952 gmc 3 speed.
#1414039 Wed Jun 16 2021 02:27 AM
Joined: Apr 2008
Posts: 150
J
'Bolter
Did the original 3 speed transmission have synchros. Also what is the designation of that transmission. Thanks for any help.


Jetmech6868@AOL.com
Re: 1952 gmc 3 speed.
jetmech6868 #1414070 Wed Jun 16 2021 02:36 PM
Joined: Apr 2005
Posts: 1,859
R
'Bolter
Second and third gears were synchronized in that series transmission. It is known as an SM318 which was also the designation for the later open driveline unit. Most parts don't interchange with the later version, however.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine
Re: 1952 gmc 3 speed.
jetmech6868 #1414159 Thu Jun 17 2021 07:52 PM
Joined: Mar 2014
Posts: 2,364
J
'Bolter
And if you have a pickup in which the prior owner routinely used 1st gear as a downhill brake, that gear will be worn very oddly...making it howl loudly all the time and jump out of gear on acceleration. Good luck!


Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end

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