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Old 02-27-2016, 03:45 PM   #1
Ken J Martin
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What Transmission is the out of?

I have a K 20 72 four speed with 285/75/16 tires with 4:10 rear end. The speedometer shows 8 to 10 miles slow against a GPS speedometer app. This is a 20 tooth driven gear so I bought a 19 tooth driven gear but I guess the driven gear I bought is for a different transmission than what I have.

Could someone take a look at the photo and or tell me what to look for to determine the transmission I have.
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Old 02-27-2016, 04:18 PM   #2
Wrenchbender Ret
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Re: What Transmission is the out of?

The top one came from a SM 465 that would be in your truck. The bottom one is probably for a 3 speed.
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Old 02-28-2016, 09:36 AM   #3
Ken J Martin
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Re: What Transmission is the out of?

Wrenchbender, thanks for the info, now I am "in the loop" as to what to look for.

Obliged!
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Old 02-28-2016, 10:06 AM   #4
oakstcustomz
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Re: What Transmission is the out of?

You have a k20? The speedo gear is in the transfer case. Should be a NP205
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Old 02-28-2016, 02:41 PM   #5
Ken J Martin
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Smile Re: What Transmission is the out of?

Yes, I meant to say transfer case, but now I know the I.D. of the transmission and the transfer case.
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