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Ecklers AutoMotive
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Username Post: '67 Impala SS Convertible Identification        (Topic#353599)
BigDogSS 
"10th Year" Silver Supporting Member
Posts: 4750
BigDogSS
Loc: SoCal
Reg: 12-21-01
11-13-18 09:38 AM - Post#2751265    
    In response to WarrenL

Great info here, Warren. Thanks.

    1967 Chevrolet Impala SS convertible 327 - Ermine White C1 - VCCA Senior Award
    1967 Chevrolet Impala SS Sport Coupe 396 - Marina Blue FF - personal "barn-find" lol



 
Ecklers AutoMotive
df0rster 
Poster
Posts: 54

Reg: 10-25-18
11-13-18 02:16 PM - Post#2751293    
    In response to WarrenL

Thanks for the info. I wonder what piece of historical info is causing these discrepancies? Just curious if this was the case for another model year (th400 small block combo).

I’d still like to figure out what these mysterious option codes are after the seatbelt code (py) and like to figure out the original engine. But for now it is being build at a big block car since that’s what it had in it when I bought it.

Btw, could that code have anything to do with the rear air shocks? Not sure that would be coded on the trim tag anyway.






 
WarrenL 
Frequent Contributor
Posts: 1209
WarrenL
Loc: Hebron, ME
Reg: 11-17-04
11-14-18 04:32 PM - Post#2751411    
    In response to df0rster

Air shocks wasn't coded on the cowl tag.

I'm not sure where Alan for the month of January from but he told me at the time he didn't have any fullsize data to look at.



 
df0rster 
Poster
Posts: 54

Reg: 10-25-18
11-28-18 11:39 AM - Post#2752669    
    In response to BigDogSS

More info below.

I finally got underneath and looked at the axle. I googled around to find out what numbers to get, all I could find (dark and tight floor space) were the casting numbers on the front/input side of the case.

I think it was 3894860-N. The 0 might be a 6 or a G. Not sure if this tells me the axle contents or just the casting number/date. on the top there is also a GM12 cast into the case.

When I google that number it really just comes back with some random forums talking about GM axles, etc.

Is there another number somewhere that might ID the axle?

Oh also found out it did have dual exhaust. Not sure if that helps id the engine or not. Or maybe that would be something to do w/ the mystery option codes (but doubtful exhaust options would be on the trim tag)

Also, if interested here is the instagram where I am posting photos of the progress.. (its easier to post there than here)

https://www.instagram.com/67impalass_vert/





 
BigDogSS 
"10th Year" Silver Supporting Member
Posts: 4750
BigDogSS
Loc: SoCal
Reg: 12-21-01
11-29-18 08:53 AM - Post#2752779    
    In response to df0rster

There is a code stamped on the front of the axle tube (not case) on the passenger side of the rear axle assembly. This will tell you the gear ratio, date and plant.
You will probably need to clean the axle tube to see the numbers.
Refer to Warren's http://impalas.org/drivetrain/ and scroll down to "Rear Axle Numbers".

    1967 Chevrolet Impala SS convertible 327 - Ermine White C1 - VCCA Senior Award
    1967 Chevrolet Impala SS Sport Coupe 396 - Marina Blue FF - personal "barn-find" lol



Edited by BigDogSS on 11-29-18 08:55 AM. Reason for edit: No reason given.

 
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