Seller notes

Check out my Store for many other early hot rod and transmission parts, both new & used. I am always adding items, so stop in from time to time. A new heavy duty/performance "scissor" detent cam spring for the M20, M21 & M22 Muncie '63-'74 4spd. transmissions. (also fits the saginaw's) GM used a much smaller/weaker spring for passenger models and a heavy duty spring on the performance models. GM has discontinued this part. I have compared a genuine GM spring next to mine, so you can compare (pic...

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