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Old 01-16-2009, 05:32 PM   #25
Yukon Jack
Mechanically Challenged
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Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,549
Re: The Diffference between the 67-72 Chevy Trucks

1967-1969 K series trucks used the closed knuckle Dana 44 with drum brakes.

1970 K series trucks switched to the open knuckle Dana 44 with drum brakes.

1971-1972 K series trucks had the open knuckle Dana 44 with disk brakes.

It has been my observation that the manual shift 1967-1969 K10's and K20 had the Rockwell T221 transfer case while the 1969 K5 would have had the NP205 or Dana 20 transfer case. I believe the Dana 20 was never offered in any K10 or K20, just K5's.

I also believe the SM420 was used in the 1967 trucks but from 1968 to 1972 the SM465 was the manual option.
1970 Blazer with a 400 sbc and 4" lift Roadworthy!
1969 K20 with a 454, a bit of lift and 35's
1980 Pontiac Trans Am, 455 Oldsmobile

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