S-10 Rear Axle Swap:

[h-bot]

From: twelve_second_vega_REMOVE_612513_THIS_@yahoo.com


The easiest way to do this swap is to use the
Monza/Sunbird/Skyhawk 7.5" 10 Bolt Differential. If you have a V8
Monza, you will already have one of these. You can
narrow an S-10 or Camaro Differential, but it gets very
expensive.

When we discuss anything relating to the
S-10/S-15 truck, remember, we are talking about 2 wheel
drive only. Nothing from a 4X4 will work for
you.

The S-10 axles came in (2) variations. 1982-1987
had 26 spline axles. 1988-up had 28 spline axles. If
you are using the stock Monza differential, use the
26 spline axles. If you are installing a 28 spline
carrier, be sure to use 28 spline axles.


Basically, the S-10 axles slip right into the Monza
Differential without any modification. They are 1/16" shorter
than the stock axle and sometimes you must have a
machinist cut a spot face on the inside of the brake drum
to give the added clearance. This can be done on a
drum lathe.

I prefer to use the GM Aluminum
Brake Drum (#1255496) found on GM 'F' and 'G' body cars
through the 1980's. These usually don't require any
modification whatsoever.

That's all there is to the
rear axle swap. The only real pitfall to be aware of
is knowing the correct spline count of your carrier.
In my car, I am using a 1986 Trans Am 3.23
Positraction Unit, so I need 26 spline axles. A 1988-up
carrier would require 28 spline axles.

I hope
this information is helpful...Robert


[This is message #13 by user twelve_second_vega on Yahoo! Club V8 Vega Conversions: http://clubs.yahoo.com/clubs/v8vegaconversions ]

[h-bot]

From: billy_b_85222_REMOVE_626027_THIS_@yahoo.com


Hi Robert.I have a 4cyl 75 Monza and the pontiac
was a 78 sunbird with a v-6.Will these housings work
ok with the above info you have given me.The reason
i ask is they were not v-8 cars to begin with.Thank
you very much for "all" of the info you are sharing
with us! Bill in Az...


[This is message #14 by user billy_b_85222 on Yahoo! Club V8 Vega Conversions: http://clubs.yahoo.com/clubs/v8vegaconversions ]

[h-bot]

From: twelve_second_vega_REMOVE_790840_THIS_@yahoo.com


Your V6 Sunbird will have the 7.5" Differential.
It is possible the 4 clyinder car has a 7.5" too,
but you would have to check under it to be 100%
sure.

The Sunbird Rear End is a direct bolt-in to the
Monza. You will probably find a 2.93 to 3.08 Axle Ratio
in the Sunbird Differential...Robert


[This is message #15 by user twelve_second_vega on Yahoo! Club V8 Vega Conversions: http://clubs.yahoo.com/clubs/v8vegaconversions ]

[h-bot]

From: billy_b_85222_REMOVE_359889_THIS_@yahoo.com


Thanks Robert.You are a true asset here on the clubs.I owe you one! Bill in Az...


[This is message #16 by user billy_b_85222 on Yahoo! Club V8 Vega Conversions: http://clubs.yahoo.com/clubs/v8vegaconversions ]