Question: what is the difference between a chevy k10 and k20?
Answer: K10 had 10 bolt rear, K20 had 14 bolt full-floater. Up front not much difference in axles, other than K20 had 8-lug outers and a little bigger brakes. Otherwise, same ole 10-bolt front axle. Some K20s probably have beefier leaf springs all around, and the rears are 56" instead of K10's 52" Hope this helps!