diff/gears - Chevy Impala SS Forum
 
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post #1 of 7 (permalink) Old 05-26-2013, 10:58 AM Thread Starter
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diff/gears

I just bought a complete diff from a 1993 caprice 9c1/w 3.42, but it need a clutch pack, so can i swap everything i need from my 2.56 g80 in the 3.42?

thanks

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post #2 of 7 (permalink) Old 05-26-2013, 09:16 PM
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If the rears are the same size, you can swap them, but you will have to set your gear mesh. You can not just bolt the parts in.

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post #3 of 7 (permalink) Old 05-27-2013, 08:20 PM Thread Starter
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Quote:
Originally Posted by Marky Dissod View Post
Not sure if the clutch pack from 2.56 will fit with 3.42?

If I'm not mistaken, 2.56 is Series 2, and 3.42 is Series 3, which MAY mean that a Series 2 clutch pack won't fit in a Series 3 gear set?

That'd be my issue of concern.
That's what i tought, if the series 2 stuff can fit a series 3?

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post #4 of 7 (permalink) Old 05-27-2013, 11:25 PM
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Only 2.93 and numerically larger work together. 2.56 carrier won't accept standard used 3.42. You can buy gears spaced that way though.


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post #5 of 7 (permalink) Old 06-12-2013, 01:33 AM
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2.73 and "lower" were a series III carrier. 2.56 and "Higher" was a Series II. A series II carrier could be used with a series III gear set if you had a spacer ring. I don't know that they still make them or not. Easier just to find a good used posi.

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RAISS, Tri-Y's, Pypes X pipe, Spintech Prostreets, 3000 Edge, 3.73's, Eaton Posi, and the rest of the Bolt-ons. Fried #7 Ring.

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post #6 of 7 (permalink) Old 06-12-2013, 11:42 AM
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Quote:
Originally Posted by MrBuick (Magnum) View Post
2.73 and "lower" were a series III carrier.
2.56 and "Higher" was a Series II.
A series II carrier could be used with a series III gear set if you had a spacer ring. I don't know that they still make them or not.
Easier just to find a good used posi.
2.56 is Series II from an 8.5" axle.
2.93, 3.08, 3.23, 3.42, 3.73, 4.10, etc are all Series III from an 8.5".
2.73? No idea if it's Series II or Series III, but it's from a 7.625" axle.

Anything under 3.23 should not even be considered, and only if it originally came with 2.56 or 2.73.

If it originally came with 2.93 or 3.08, you WILL NOT notice 3.23, you might not really notice 3.42, and you might regret not going to 3.73 - even with all the cautions I insist on mentioning about HiWay MpG and the $400 it MIGHT cost to stop your driveshaft impersonating a guitar string.

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post #7 of 7 (permalink) Old 07-06-2013, 09:23 PM Thread Starter
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Quote:
Originally Posted by MrBuick (Magnum) View Post
2.73 and "lower" were a series III carrier. 2.56 and "Higher" was a Series II. A series II carrier could be used with a series III gear set if you had a spacer ring. I don't know that they still make them or not. Easier just to find a good used posi.

that'S what i've done , found a 3.42 posi (complete diff) and swapped the whole thing today..feel like a different car..very happy with it..the best part is i pais 80$ for the diff, complete with brakes and all

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