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HELP plz - can you identify this differential?
Posted by: Rcavictor ()
Date: October 26, 2019 05:16PM

I acquired a PG and diff for my Greenbrier. The diff has a stamping that I can't seem to identify from any of the codes listed in the Corvanatics 95 stuff or Bob Helt's chart.

The carrier is cast 3780272 which should be a 61-62, it has a 1/2" fill plug, and the stamping shows "PW8 3"...

Any idea what the ratio might be from this info? Or what it is??

Thanks!
Rob

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Re: HELP plz - can you identify this differential?
Posted by: joelsplace ()
Date: October 26, 2019 05:31PM

Drain plug and cooler lines - '61 FC.
BY is the closest Clark's lists but that clearly isn't a Y.

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...




Edited 1 time(s). Last edit at 10/26/2019 05:35PM by joelsplace.

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Re: HELP plz - can you identify this differential?
Posted by: Rcavictor ()
Date: October 26, 2019 05:37PM

I got that. Bought it for my 62 8-door. Trying to determine the ratio..

Thanks!

Rob

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Re: HELP plz - can you identify this differential?
Posted by: cnicol ()
Date: October 26, 2019 05:41PM

I agree with Joel. Cooler lines make it FC (Corvair Truck). Date code G 19 60 means June 19, 1960 making it a very early production example.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

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Re: HELP plz - can you identify this differential?
Posted by: joelsplace ()
Date: October 26, 2019 05:41PM

You'll have to pull the cover and count the teeth. Then you can update our info on that code assuming the gears haven't been changed.

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...

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Re: HELP plz - can you identify this differential?
Posted by: Rcavictor ()
Date: October 26, 2019 05:55PM

Will do, thanks.

Rob

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Re: HELP plz - can you identify this differential?
Posted by: Rcavictor ()
Date: November 05, 2019 01:57PM

Counted the teeth and looks like 32 ring and 9 pinion teeth.

I believe that makes it a 3.55 correct?

Rob

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Re: HELP plz - can you identify this differential?
Posted by: Timothy Shortle ()
Date: November 05, 2019 04:35PM

Correct. Is the stamped code BW?

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Re: HELP plz - can you identify this differential?
Posted by: MattNall ()
Date: November 05, 2019 04:42PM

PW



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