General Motors transmissions

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 ===German ZF S6-40===
-Starting with the 1988-'96 Y-body (Corvette), a German ZF 6-speed was used, designated S6-40.  It was stout and reliable, but its limited use and short production run didn't support wide aftermarket solutions.  In fact GM didn't even stock service parts for the transmissions, instead opting to provide remanufactured units instead of repairing them.  Although it ended up costing GM less in the long run, it was a concept not warmly received by the public.  Early models were rated for 400 ft-lbs, and later models were rated to 450 ft-lbs.
+Starting with the 1988-'96 Corvette, a German ZF 6-speed was used, designated S6-40.  It was stout and reliable, but its limited use and short production run didn't give rise to wide aftermarket support. In fact GM didn't even stock service parts for the transmissions, instead opting to provide remanufactured units instead of repairing them.  Although it ended up costing GM less in the long run, it was a concept not warmly received by the public.  Early models were rated for 400 ft/lbs, and later models were rated to 450 ft/lbs.
 ZF 6-speed ratios are as follows:

Revision as of 20:26, 30 January 2013