www.jdrace.com

1971- 1988 10 bolt 8.5 2 series posi units aka(corperate GM 10 bolt)

Completely gone through cases polished ckutches checked and or replaced spider gears cleaned and checked replaced if worn or bad.
Reassembled lubed and reshimmed for better than factory performance.

199.99 plus minimal shipping 10-15 dollars in the lower 48 states.

Used in all 1971 -1977 cars trucks fullsize cars etc.
used in 442 and grand national 1984 -1987 cars also trucks 1/2 ton


J D Race .com

What ratio? Is this just the 3rd member? Want it for a 1978 El Camino 10 bolt, will this fit my OE housing?

You need a 7.5 with 26 spline axles as the 1878-1987 caminos were all g-body and all used 7.5 with the exception of the GN and 442 olds in 1984-1987 ONLY.

So your looking for a 7.5 10 bolt GM posi with 26 spline axle application

7.5 series are as follows

2 series 2.14 2.29 2.41 2.56 2.73 2.93 3.08
3 series 3.23 3.42 3.73 4.10 4.56

I have 2 series for the same price 199.00
3 series I only have in 28 spline axles 259.00

I can get NEW true trac (newest technology and strongest for your 7.5) 26 spline 3 series posi for your car at the price of 375.00

we also have the 28 spline axle upgrade for your car which will greatly increase it ability to handle torque and horsepower.