Re: Granny geared 71' K10, I need to go faster...
The transfer case is a NP205.
The front axle is not original and is out of a later truck.
You really need to pull the covers and find out what gear ratio you have.
When I bought my Suburban the rear axle had been replaced with a 14 bolt (3.73:1) but retained the original Dana 44 front axle with a 4.10:1. Yep, no way to use the 4WD but it drove down the road fine.
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My Classics:
'72 K20 Suburban + '65 Dodge Town Wagon
'72 Corvette Roadster +'67 Corvette Roadster
'73 Z-28 Camaro
'63 Ford SWB Uni Pickup
'50 Ford Coupe
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