 A White Sport Coupe
"3rd Year" Silver Supporting Member
Posts: 116
Reg: 08-19-10
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04-15-12 11:30 AM - Post#2215375
Hello,
I'm trying to determine if my positraction is original to the car and whether anything else can be determined from these numbers. I have a '61 Impala built in Janesville on 11E (Fifth week of November 1960). It's a 348 3x2 4 speed car and the rear end numbers are B20 (Feb 2 1960) and AM212 stamped on the passenger side case. It is a 3:36 gear. It's 10 months from casting to build date and that seems like a long time. Is it possible, probable or unlikely this rear end is original to the car.
Bob
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 DonSSDD
Silver Supporting Member
Posts: 4661
Loc: Nova Scotia, Canada
Reg: 08-21-01
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04-15-12 12:16 PM - Post#2215384
In response to A White Sport Coupe
Maybe that 11E is May 11? Is it a P case on the rear end?
Don
59 El Camino, 62 Bel Air SC, 62 Bel Air SC(sold in Finland is 2011), 63 SWC Vette (sold)
Member #2194 |
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 Verne_Frantz
Valued Contributor
Posts: 3622
Loc: hightstown,NJ USA
Reg: 08-22-00
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04-15-12 07:47 PM - Post#2215547
In response to A White Sport Coupe
- A White Sport Coupe Said:
Hello,
I'm trying to determine if my positraction is original to the car and whether anything else can be determined from these numbers. I have a '61 Impala built in Janesville on 11E (Fifth week of November 1960). It's a 348 3x2 4 speed car and the rear end numbers are B20 (Feb 2 1960) and AM212 stamped on the passenger side case. It is a 3:36 gear. It's 10 months from casting to build date and that seems like a long time. Is it possible, probable or unlikely this rear end is original to the car.
Bob
Your rear was assembled Feb 12th. The AM is the axle code. 
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DZAUTO
Dedicated Enthusiast
Posts: 7000
Loc: Mustang, OK, USA
Reg: 12-25-99
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04-15-12 08:38 PM - Post#2215565
In response to Verne_Frantz
And 212 is the assembly DAY, Feb 12. Sooooooooo, from casting to assembly is only 10days ----------- just about right.
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 Bobaloo
"5th Year" Silver Supporting Member
Posts: 569
Age: 67
Loc: Alabama
Reg: 07-02-07
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04-16-12 12:32 PM - Post#2215788
In response to DZAUTO
Bob, I dont have an answer, but I love your I D. A White Sport Coupe is so clever....:)
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A White Sport Coupe
"3rd Year" Silver Supporting Member
Posts: 116
Reg: 08-19-10
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04-17-12 07:19 AM - Post#2216101
In response to Bobaloo
Hello,
Many thanks to all for the great information on this site.
Bob
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f.i.57chevynut
Frequent Contributor
Posts: 1195
Loc: Granada Hills, CA
Reg: 03-04-09
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04-24-12 12:37 AM - Post#2218534
In response to A White Sport Coupe
It is possible but very unlikely.
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