Cascade Crew

[aaron_sK]

Will the guts from Al's 3.23 posi 10-bolt (from an '82 Trans Am) drop into my '83 S10's 10-bolt axle? I counted shaft rotations today, and it's a very high gear. Shaft rotation was about 1.3 per axle rotation, so I figure it's around a 2.70 (stock 4-speed truck).

With the T5 in it I'd like to go at least mid-3.x range, and add a limited. Al mentioned to me last night that I may be able to use his old stuff when he goes to 3.73's.

[chevymad]

Parts are interchangeable between s10 and camaro rears. I assume you're changing carrier and all? The rear will have to be set up as if you're putting in a new one. You will probably have to pull the inner pinion bearing off of yours to get the shim off the pinion. That should get the pinion depth right for your housing.

[Twilightoptics]

How did you count this? To do it right you need to turn both tires at the same time. Mark both of them relative to the ground. And mark the pinion/driveshaft. Turn the wheels and count rotations. X rotations of the driveshaft for 1 turn of the tire.

AKA 3.73 will be 3.73 rotations for one turn of hte tires.


If you only turn one wheel, you're engaging the spider gears. When you have a one tire fire, the wheel is turning twice as fast as the speedo would say.

Unless it's a posi, then both wheels turn at the same time.

[Al Hasse]

When we talked about this, I said we'd have to first take a good look at what comes out to see what condition it's in - it's pretty noisy around the 40mph range. As for the carrier, we're assuming he has 26 spline axles so we'll have to verify that too.

[aaron_sK]

Paul, I marked the wheel and the shaft, then spun the wheel around once, and multiplied by 2 (1.35-ish x 2 = 2.70). As far as I know that was the way you're supposed to do an open rear.

[Twilightoptics]

Sounds like you did it right.

What year and trans came with this S-10?

All the ones I've dealt with had 3 series gears of some sort. A 3.42, lots off 3.73 and seen the occasional 4.11.


2.70 seems way low for a motor with no power. That's why on the S10 T5's they dropped first gear down yet to make them GO..

[aaron_sK]

It's an '83 that used to have a factory Isuzu 4-speed in it (stupid fixed-bellhousing grindbox ). I checked the RPO codes and only found one indicating it's an open 10-bolt, but not what ratio it is.