Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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Transmission ID?
#387169 04/06/17 03:04 PM
Joined: Sep 2010
Posts: 168
mi
37ryan Offline OP
Shade Tree Mechanic
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37ryan
Shade Tree Mechanic
Joined: Sep 2010
Posts: 168
mi
I have a 3 speed, open driveshaft transmission with the "old style" bell hsg bolt pattern. The input shaft has 10 tooth and output has 16 teeth. I/O gear ratios are as follows: 1:1, 1.75:1, 2.75:1, reverse 3:1. The transmission was bought to update a '37 chev drivetrain, but the project got cancelled. It is in very good condition, always stored inside, and will be up for sale here as soon as it is identified. Thanks in advance for any info.
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Re: Transmission ID?
37ryan #387170 04/06/17 03:18 PM
Joined: Jan 2002
Posts: 30,701
Likes: 141
West Allis,Wi.
Chev Nut Offline
ChatMaster - 25,000
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Chev Nut
ChatMaster - 25,000
Joined: Jan 2002
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West Allis,Wi.
Are there any casting numbers (raised numbers) on the out side of the case?

Gene Schneider
Re: Transmission ID?
Chev Nut #387173 04/06/17 03:37 PM
Joined: Sep 2010
Posts: 168
mi
37ryan Offline OP
Shade Tree Mechanic
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37ryan
Shade Tree Mechanic
Joined: Sep 2010
Posts: 168
mi
The shift cover has 3686832 GM, the gear housing has : GM 27 3743368 F129 the casting number on the tailshaft is illegible. I misspoke, the bell housing bolt pattern the the new style with the larger dia front bearing retainer pilot dia

Last edited by 37ryan; 04/06/17 03:44 PM.
Re: Transmission ID?
37ryan #387182 04/06/17 05:41 PM
Joined: Jan 2002
Posts: 30,701
Likes: 141
West Allis,Wi.
Chev Nut Offline
ChatMaster - 25,000
Offline
Chev Nut
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701
Likes: 141
West Allis,Wi.
The is a 1958 and up full sized car 3 speed. The ratios would be 2.94 for low and 1.68 for 2nd gear.

Gene Schneider

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