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Old 05-27-2010, 12:50 AM   #1
jake wells
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63 C40 transmission

what kind of trans would be in a C40. all i know is that its a 4 speed

thanks


-Jake
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Old 05-27-2010, 02:06 AM   #2
Captainfab
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Re: 63 C40 transmission

In a C40 it would likely still be a SM420.
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Old 05-27-2010, 03:15 AM   #3
LILRED66
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Re: 63 C40 transmission

The light-duty trucks (C10, C20, C30, K10 & K20) were commonly equipped with the SM420. The medium-duty were equipped with the SM420, but also, the SM465.
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Old 05-28-2010, 12:24 AM   #4
Captainfab
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Re: 63 C40 transmission

I thought the SM465 didn't come out until the '69 model year

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Originally Posted by LILRED66 View Post
The light-duty trucks (C10, C20, C30, K10 & K20) were commonly equipped with the SM420. The medium-duty were equipped with the SM420, but also, the SM465.
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Old 05-28-2010, 03:45 AM   #5
raycow
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Re: 63 C40 transmission

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I thought the SM465 didn't come out until the '69 model year
68 - that's why the bellhousing center hole is larger from 68 on.

Ray
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Old 05-29-2010, 01:06 AM   #6
Captainfab
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Re: 63 C40 transmission

Oops that's right....I forgot that it was '68 and not '69. Thanks for correcting my mistake.

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68 - that's why the bellhousing center hole is larger from 68 on.

Ray
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Old 05-27-2010, 10:32 AM   #7
Fred T
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Re: 63 C40 transmission

It should be a SM420. Reverse is left and down. The SM465 reverse is right and down. Both are good, reliable heavy duty boxes.
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