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-   70-73 Firebird & TA TECH (https://forums.maxperformanceinc.com/forums/forumdisplay.php?f=437)
-   -   Help Rearend ID (https://forums.maxperformanceinc.com/forums/showthread.php?t=849483)

gs462 03-31-2021 04:36 PM
Help Rearend ID
 
I have tried everything I can think of to ID this rear, including google and every other search engine. The numbers on the Axle tube are CRX 0421g1. The numbers on the housing are
GM 70 pass side and 3969340nf drivers side.
Any help would be appreciated.

eaglesan13 03-31-2021 04:53 PM
Try looking here:

http://www.wallaceracing.com/axlesearch.htm

Quote:
Originally Posted by gs462 (Post 6238570)
I have tried everything I can think of to ID this rear, including google and every other search engine. The numbers on the Axle tube are CRX 0421g1. The numbers on the housing are
GM 70 pass side and 3969340nf drivers side.
Any help would be appreciated.

gs462 03-31-2021 05:13 PM
Quote:
Originally Posted by eaglesan13 (Post 6238578)
I did, Thanks I tried every search there is. with no results

eaglesan13 03-31-2021 06:00 PM
I cut and pasted the info below. If you follow the link I first posted, it will show you how to read the date code, etc (0421G1).

1 Matches Found (displaying 1 to 1)

Year 1970
Body Style Firebird
Gear Ratio 2.73
Gear Count 41/15
Std Code CRX
Locking Code CRY




Quote:
Originally Posted by gs462 (Post 6238581)
I did, Thanks I tried every search there is. with no results

gs462 04-01-2021 09:41 AM
Thanks, I tried pasting it in and go nothing maybe i did it wrong.

eaglesan13 04-01-2021 11:54 PM
3 Attachment(s)
From the Wallace Racing website...

Aus78Formula 04-02-2021 05:59 AM
The ratio only tells you how it came 50 years ago, open it up to confirm.

gs462 04-02-2021 07:54 AM
Ahhh I was putting the whole code in Thanks.


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