Enjoy 5% OFF at VEVOR Canada! and Support Canadian Poncho at the Same Time!
Members Login
Username 
 
Password 
    Remember Me  
Canadian Poncho Homepage -> Canadian Poncho -> 58-64 Full Size Power Train Tech Forum -> diff gear ratio tags
Post Info TOPIC: diff gear ratio tags
otus


Addicted!

Status: Offline
Posts: 335
Date:
diff gear ratio tags
Permalink  

I've jacked up my parisienne to take a look at the steady bearing job at hand and had a look at the differential. It has the correct casting number 3789812 and the sideways P for a canadian posi but get this...it's got two metal gear ratio tags on it! looking towards the back..A solid round tag indicating 336's at 11:00 and one at 9:00 with two side clipped indicating 411's. What the dickens confuse. Obviously something is afoot here as well (referring to 2bbl vs 4bbl on the 283).I'll jack it up again spin the tires and see what I've got. I would have guessed 308's based on my cruise home......We shall see.



__________________
4SPEED427


A Poncho Legend!

Status: Online
Posts: 50199
Date:
Permalink  

Interesting that they have any tags at all. I've never seen tags on the GM's indicating ratio. Of course I've always worked with 65 and up though.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
DonSSDD


Canadian Poncho Superstar!

Status: Offline
Posts: 5732
Date:
Permalink  

The old ones had the tags, a round piece under a bolt, they cut pieces out to designate the ratio. Id bet 336s if you werent Erving 4000 rpm on the way home. Check all the casting numbers on the car, it seemed pretty stock to me. My 63 has 308s and was originally a 283 2 barrel powerglide too.

__________________

63 Parisienne sport coupe (The Big GTO), black, maroon interior, 409 4 speed; former owner of a 59 El Camino, 63 Corvette SWC, 62 Chev Bel Air SC.
1963- Pontiac top selling car in Canada

Mahone Bay, NS Still not old enough to need an automatic
Pontiacanada


A Poncho Legend!

Status: Offline
Posts: 20744
Date:
Permalink  

Is it just American GM products that have posi tags?

1964 style:

$T2eC16R,!y0E9s2S6chjBQ3nb1YS!g~~60_57.JPG

 



Attachments
__________________

Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.

otus


Addicted!

Status: Offline
Posts: 335
Date:
Permalink  

These tags,Pontiacanada, are not related to the diff lube ones. They are as mentioned just plain round metal tags with various bits cut off/out to denote gear ratio.I wiil post a link to look at...not sure if I can make it "live" though lol. I'll see if I can get a pic of mine to show you. http://www.60impala.com/differentialcodes.htm   



__________________
otus


Addicted!

Status: Offline
Posts: 335
Date:
Permalink  

IMG_0068.JPGIMG_0069.JPGOk, I've jacked er up and spun the wheels and counted revolutions at the yoke....just under 3.5 which verifies 336 gearing. Here are a couple if pics of my headscratcher dual tags.Sorry the pics are sideways..round tag is at 11oclock , snipped tag at 9oclock looking toward rear of car.



Attachments
__________________
otus


Addicted!

Status: Offline
Posts: 335
Date:
Permalink  

tried posting a couple of pics of the driveshaft redo.....hmm ...no matter what I do they won't post correctly..Sorry to those who are interested.

__________________
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
Nov 18 to Dec 2 Black Friday UP TO 50% OFF Plus Huge Coupons
4SPEED427


A Poncho Legend!

Status: Online
Posts: 50199
Date:
Permalink  

Would you want to email them to me and I can post them? If so, send me a PM and I'll send my email address to you.

__________________

1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.
Canadian Poncho Homepage -> Canadian Poncho -> 58-64 Full Size Power Train Tech Forum -> diff gear ratio tags
Tweet this page Post to Digg Post to Del.icio.us
.
Support Canadian Poncho!
Select Amount:
<
.
.
.