Chevy 10 bolt rear
the rear end is prob 3:42 limited slip rear end
Should have one fairly thick leaf spring. The spring is fiberglass.
the most it can tow is 4500-5500 pounds depending on the rear end gears.
You can switch the rear end from a Chevy 1500 with a Chevy 2500 rear end with minimal effort. Both have similar components but the 2500 offers increased durability.
Will it bolt in? No. But anything will fit with fabrication and money.
It can be done, yes.
will a 1988 rear end fit under a 1965 chevy truck
1988-1998 requires API 80W-90 GL-5 gear lube. This is common for most rear ends
The 3.73 rear end in a 1998 Chevy Silverado 1500 does not automatically mean it is a posi-traction (posi) differential. Posi-traction refers to a limited-slip differential that allows both rear wheels to spin together for improved traction. You would need to confirm with the specific vehicle's build options or VIN to determine if it has a posi rear end.
80W-90 (GL-5) gear oil
Yes it should
I am finding that astro vans are very likely to bend the rear end housing. I am fixing mine for the second time now. The axle housing bends and then puts the carier bearings in a bind. also check the outer ends of the axle shafts for bearing wear. Replace the shafts if you see any pitting or galling. Good luck.