#1
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Muncie ID
Picked this Muncie and ITM shifter up a couple weeks ago, can anyone tell me what it is?
From searching online it seems to have some conflicting characteristics. |
#2
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Looks to be a 1969 trans with the casting number ground off should be a 660 case. The trans is a m20 2 grooves on input
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am |
#3
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Quote:
2 groove 10 spline input=M20 where the stamped number indicates M21 P = Muncie 9 = 1969 A = Janurary 02 = 02 B= M21 |
#4
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Wouldn't that be a 1970 or later side cover with the TCS switch on the 3-4 input?
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70Z28 04B Norwood Forest Green-white Stripes Black DeLuxe Interior Owned since 1978 - First Car |
#5
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Some one rebuilt it and changed the guts, opriginally was a M21
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am |
The Following User Says Thank You to ssl78 For This Useful Post: | ||
L_e_e (06-23-2018) |
#6
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You could put a mark on the input and output shafts, put it in first gear, and if the output shaft turns 2 and a half times with one turn of the input shaft, that would be a M-20 (2.52:1 ratio). An M-21 would turn a little less then that, at 2.20:1.
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#7
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If it has 2 rings on the input, you don’t need to turn it. There is no mix and matching of parts. It is a M20, period.
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69 SS/RS 396 M20 X22 Nor 12B,72B,712 bought 1979 FULL OWNER HISTORY 69 Dick Harrell tribute Day II 427 M20 4.10 X11 76 orig pnt, 711 67 Super Stock 302 Camaro re-creation |
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L_e_e (06-23-2018) |
#8
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Thanks for the replies, it's kinda what I figured, born a M21 and somewhere down the line someone converted it into a M20, which is what I wanted in the first place.
Still puzzling is to why someone would grind off the main case part number? I can't think of a reason for doing that. |
#9
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Maybe it was out of a stolen car years ago and some one thought it was some kind of identification number
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69 RS SS L78 conv 69 RS SS ZL1 69 L78 Chevelle conv 69 L78 Nova 69 L34 Nova 67 SS Chevelle 73 Trans Am |
#10
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LOL, good thing it doesn't have a vin stamped next to the date code.....
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