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Old 06-30-2010, 11:52 PM
sapsz28 sapsz28 is offline
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M21

My 1980 Z28 has in it a M21 matching # muncie which I had rebulilt this summer and exept for seals the tranny was inn perfect shape with 116,000kms on it or 100,000miles,people dont beleive me untill I show them them the build sheet and they take a peak under the car, beautifull tranny had her sealed with castrol syntec 70w90 gear oil which will outlast the tranny but still every 2 sesons regardless of mielage I change the fluid, preventative maintenance goes along way.
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