Help with differential code

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Old

Jan 17, 2011 | 10:08 AM

#1

frasco

Thread Starter

1970 Cutlass Convertible

Joined: Jun 2010

Posts: 70

From: St Louis MO

Help with differential code

I have what I believe to be an unaltered 1970 Cutlass S with a code P2 stamped into the rear differential...

I cant seem to locate a sheet that explains what this means?

Any help would be great

--Scott

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Old

Jan 17, 2011 | 10:24 AM

#2

2blu442

Moderator

Joined: Jun 2006

Posts: 522

Hi Scott
My reference doesn't show a P2 but does have an R2. If that's what you've got then its a 2.56 open rear end. They were common highway gears during that era. John

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Old

Jan 17, 2011 | 04:31 PM

#3

507OLDS

Registered User

Joined: Oct 2009

Posts: 3,814

From: Erie,PA

Like he said,I think it probably says R2,and maybe the leg of the "R" is not very visible

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Old

Jan 18, 2011 | 12:21 AM

#4

svnt442

Registered User

Joined: Jun 2009

Posts: 4,293

From: Palm Bay, FL

Look at the left column top row. This is from a 1970 chassis service manual. Just a conformation of what was already stated.

misc.jpg

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