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#4
01-13-2018, 03:00 PM
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Rob, the letter suffix stamped after the assembly date on transmission denoting A=M20 ,B=M21,C=M22 is not designated on Protecto plates. Your Z28 could have come with any version trans, but the most probable is M21, so percentage wise Bor M21. I've owned/own Z's with all three configurations. Early 69 built cars with muncie trans didn't have the suffix stamped but based on your build date it would have.
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Steve Shauger The Supercar Registry www.yenko.net Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website: www.vintagecertification.com 
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rlw68 (01-13-2018) | ||
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