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Author Topic: K20 to K10 trans swap  (Read 2952 times)

Offline birdy411

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K20 to K10 trans swap
« on: March 01, 2010, 05:44:53 pm »
Wanting to swap trans and transfer case from 3/4 ton truck to half ton truck. This is the manual trans.

Can i do this, or are there different gear ratios, etc....that will affect speedometer, etc.

thanks
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1978 Chevy K10 Scottsdale
1979 Chevy K10 Custom Deluxe
1980 Chevy K20 Scottsdale (Parts)
1978 Chevy C10 Silverado (Parts)

Offline Captkaos

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Re: K20 to K10 trans swap
« Reply #1 on: March 01, 2010, 05:57:07 pm »
Ratios are determined by the speedo gears which are set to the original trucks trans and gear ratio.
As far as swapping them out you will have not HUGE issues.
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Offline Irish_Alley

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Re: K20 to K10 trans swap
« Reply #2 on: March 02, 2010, 02:40:15 am »
other things to look at are spline counts for the drive shaft but most of all a new drive shaft if yours is a standard bed and the 3/4 is a standard bed then your alright but if your is a standard and the other is a long then you might have a custom shaft or find one to fit
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Offline birdy411

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  • Posts: 41
Re: K20 to K10 trans swap
« Reply #3 on: March 04, 2010, 03:16:53 pm »
Good to know, thanks!
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1978 Chevy K10 Scottsdale
1979 Chevy K10 Custom Deluxe
1980 Chevy K20 Scottsdale (Parts)
1978 Chevy C10 Silverado (Parts)
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