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Joined: Oct 2003
Posts: 96
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2003
Posts: 96 |
I picked up a complete 37-39 transmission in good order at a swapmeet but on comparing it with other parts I have the spigot on the input shaft that goes into the crankshaft bearing is 3/4 inch long while the other I have is 1 inch long.Does anyone know which year is which?
ColinGrant
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Post all the numbers you can find on both transmissions. Particularly the drivers side near the top.  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Aug 2004
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ChatMaster - 3,000
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ChatMaster - 3,000
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In the states, '38 and '39 used a ball bearing clutch throw out bearing. 1937 would have used a carbon bearing. The front bearing retainer will have a snout for the late bearing. The retainer for the carbon bearing is more of a ring.
My 1941 catalog says all pass and 1/2 ton 3 speed trans used the same main drive gear (aka pilot shaft or input shaft). The 3/4 and 1 ton trucks for '38 and '39 used a different part.
All truck 3 speeds for these years used a longer case and main shaft than the passenger transmission, so a truck unit should be easily distinguished from a passenger car trans.
The truck trans was made longer so it would be the same length as the 4 speed. I hope this helps.
Mike
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Oct 2003
Posts: 96
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2003
Posts: 96 |
The numbers cast into the transmission on the right side are
150
2
590822
GM
K6
2
590822
GM
I should add at this point that these will be parts from Canadian manufactured RHD cars assembled in NZ.The complete transmission has the shorter input shaft with 3/4 inch spigot The other is in pieces. I think you may have answered my question tho. The one in pieces is probably a collection of unmatched parts including a 3/4 ton input shaft
Thanks everyone
ColinGrant
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Joined: Aug 2004
Posts: 3,469 Likes: 48
ChatMaster - 3,000
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ChatMaster - 3,000
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Colin,
Your casting number is for '37-'39 passenger. If the K and 6 are part of the casting date, it could indicate a November, 1936 date. However, they should be separated by a day number of 1 through 30 (as in K 15 6 would be Nov. 15, 1936)
Mike
ml.russell1936@gmail.com
Many miles of happy motoring
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Joined: Oct 2003
Posts: 96
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Oct 2003
Posts: 96 |
ColinGrant
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