Hurst Shifter 70 into 73

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Dec 22, 2012 | 05:50 PM

DonW

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From: Belle Mead, N.J., U.S.A.

Hurst Shifter 70 into 73

I'm doing the auto to 4 speed conversion. I got a Hurst Competition Plus off a buddy's donor 1970 M-21. I've got a 1973 M-22. The adapter plate PN 6939 does not fit. I've seen adapter plate PN 8008 which looks like the right one. Is that correct? Will the shifter unit I have otherwise work? The number on the body of the shifter is Patent 3216274. Thanks for the help.

Dec 22, 2012 | 07:23 PM

Mike Ward

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Never heard of a 1973 M22 (?)

Dec 22, 2012 | 07:47 PM

stpman

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From: I may be getting old but I refuse to grow up

Quote:

Originally Posted by Mike Ward

Never heard of a 1973 M22 (?)

5speeds.com dates them to 1974

http://www.5speeds.com/muncie2.htm

Dec 22, 2012 | 08:55 PM

Mike Ward

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Over the counter only I guess.

Dec 23, 2012 | 09:50 AM

DonW

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From: Belle Mead, N.J., U.S.A.

I should have said that the transmission I have Muncie #3925661 came out of a 73, but I can't be sure it was original to the car. Thanks for the quick replies.

Dec 23, 2012 | 10:54 AM

Mike Ward

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3925661 is the casting number for the main case and is common to M20, M21 and M22 units. I'd be more concerned with the tailshaft casting number if the shifter won't mount up.

Dec 24, 2012 | 06:48 AM

DonW

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From: Belle Mead, N.J., U.S.A.

Mike

Tailshaft number is 13S417485. Thoughts?

Dec 24, 2012 | 07:06 AM

DonW

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From: Belle Mead, N.J., U.S.A.

Did some further review and other number is P3C01A which I believe makes it an M-20. One web site has the tail shaft number listed as a Chevelle only transmission.