79 k10 gearing
 

I'm looking for some info/advise for my 79 k10. It's still set up as full time 4x4 with a 12 bolt rear and a gm 10 bolt front. My issue is this truck is geared way too high. It's a 2.76 axle ratio. I'm only running 31" tires but would like to upgrade to 33" in the future. I have a set of rears out of a 77 k20 with only 80k on them I bought plus they have all new leaf springs already on them too. There 4.10 ratio 14 bolt full floater in the rear and a Dana 44 8 lug I'm the front that's a 4.09 ratio. What's the easiest way to swap rears? Does anyone know if my driveshafts, and calipers will bolt right up? I imagine my speedometer will be way off too. Any advise is greatly appreciated.
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Re: 79 k10 gearing
 

Don't plan on driving over 60 mph with those 4.10's, they aren't the best road gear.

Ask me how I know ..

Unless you convert them, it'll be drums in the rear.

I agree the 4.10s aren't the best for on the highway. My 77 k20 I bought new had 4.10 gears but with 33s I could live with it. I'm just trying to see what's all involved with the swap. I'm hoping my u joints are the same as with the 3/4 ton rears and if the brake lines will hook up.
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