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Join Date: May 2005
Location: so cal
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need to ID this turbo transmission with cooler

I could not find anything on a Google search appears to be a lsd turbo transmission with side cooler
787/12/0136 GAMMA p/n 930 301 101 OR dated 12/77 mid section 930 301 102 OR 40/6
race box??
thanks

Last edited by 914agogo; 01-24-2014 at 04:30 PM..
Old 01-24-2014, 04:08 PM
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Originally Posted by 914agogo View Post
I could not find anything on a Google search appears to be a lsd turbo transmission with side cooler
787/12/0136 GAMMA p/n 930 301 101 OR dated 12/77 mid section 930 301 102 OR 40/6
race box??
thanks
Hi i found this on gearboxes
Quoting from another source so i cant vouch for accuracy-


For the earlier cars, the numbering was much shorter, and not very descriptive. The cutover was at the end of 1987, for 1988 models. So the first G50's in 1987 used the "old" numbering scheme.

The main identification is on the bottom of the transmission, in the middle, on a raised surface, which is sometimes scraped from bottoming out on the pavement.

Example, 73H 06841

7 is the transmission type
3 is the transmission version
H is the model year, H=1987, I was skipped, J=1988, K=1989

06841 is the serial number, starting from 1. Swiss version started at 20001.


Types

73 = G50.00
74 = G50.01

77 = 930.36 turbo 4-speed

Before 1982, the numbering had 1 less digit, and the model year was a single digit. 1=1981.

778 = 930.34 1978 model
779 = 930.34 1979 model
770 = 930.34 1980 model
771 = 930.34 1981 model
77C = 930.34 1982 model
77D = 930.34 1983 model

Endquote
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Old 01-24-2014, 08:21 PM
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gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
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Those are casting numbers.
Type number and serial number is on the bottom rib next to the drain plug.
Old 01-25-2014, 09:19 AM
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