Been wanting to put larger tires on my 87 C-10, but the current gears (2.73's) as-is are geared a tad too high for the stock 225's. I figure if I go through all the effort of re-gearing, why not just do an axle swap, which keeps the truck apart for a lot less time.
So I've read a bit about the 9.5" SF14 bolt 6 lug mod to 5 lug. Sounds like just the trick since I want to keep the mostly stock look, and keep the stock 15" rally rims. After spotting this idea, I figured why bother swapping in another 10-bolt (particularly if I get any sort of heavy trailer or boat). I've spotted an 85 C-clip 14 bolt locally, but haven't heard back yet if it is an 8 lug or 6 lug. So, a few questions.
Can one convert an 8 lug also? or only the 6 lug version? (I presume only the 6 lug because the 8 lug would have the big 13" brakes, right?)
After modifying the axles to 5 lug, you use 454ss drums, right? Even if it is a 73-87 SF axle?
When modifying the axles, does the center hub diameter need to be turned down from 6 lug axle? (I presume an 8 lug definitely would need to be turned down.)
Driveshaft length. Do I need to shorten the old driveshaft if I swap to a 14 bolt? And will it need a conversion u-joint?
Brake proportioning valve or master cylinder, any changes needed?
And since everything is apart, recommended best brake shoe brand/grade/material?
Thanks!
1
