models with better gear ratios

[79vette]

Whether you get an axle to swap in or plan to re-gear the one you have, I would plan on going through it and changing all the bearings/brakes/seals. With as old as these trucks are getting its worth fixing it once and not having to deal with it again for another 20-40 years.

I re-geared my K5 from 4.56 to 3.73 with the axles in the truck. Took me 2 weekends, but I also had to rebuild both air lockers and that was a hassle. If I were you, I'd go on this calculator and put in all your specs and figure out what ratio you need to get the performance you are looking for, buy a gear and bearing kit and rebuild the axle in the truck. Torquing the crush sleeve is a pain but its definitely doable in a weekend. It would probably take as long to find and pick up another housing as it would to regear the one you have honestly.

https://spicerparts.com/calculators/...rpm-calculator


I sold a 3.08 10 bolt in SoCal for $50 a couple months ago. Housings are still out there, but are getting harder and harder to find and they are really heavy to move around. If the extra cost and work are worth it to you to not take the truck our of service for a weekend, buying a second housing may be the way to go...