C3 Transmissions

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C3 Transmissions
YEARS Model Ratios RPO
Automatics - 
'68 -'77 THM400 2.48, 1.48, 1.00, (R)2.07 M40 
'76 -'79 THM350 2.52, 1.52, 1.00, (R)2.07 M38
'80 -'81 THM350C 2.52, 1.52, 1.00, (R)2.07 MV4
'82 700-R4 3.06, 1.63, 1.00, .70, (R)2.29 MD8 
Manuals - 
'68-'69 Saginaw 2.54, 1.56., 1.00, (R)2.41 M13
'68-'74part* Muncie 2.52, 1.89. 1.24, 1.00, (R)2.59 M20
'68-'74part* Muncie Close Ratio 2.20, 1.64, 1.24, 1.00, (R)2.27 M21
'68-'71 H.D. version of above Ratios same as M21. M22
'74part*-'79 Borg-Warner 2.64, 1.75, 1.34, 1.00, (R)2.55 M20
'78-'79 Saginaw 2.85, 2.02, 1.35, 1.00, (R)2.85 M20 Base manual for L48. Full cast iron construction. 
'74part*-'79 Borg-Warner close ratio 2.43, 1.61, 1.23, 1.00, (R)2.35 M21 
'80-'81 Borg-Warner 2.88, 1.91, 1.33, 1.00, (R)2.78 M18 
* The transition from Muncies to Borg-Warners was in Feb/Mar of '74.