The Muncie 4 speed side covers with the boss(es) for the TCS, there are at least two styles.
First style has one boss and TCS switch was used on '71 and '72 400 Pontiac application. Never ran across the one boss side cover on an original '70 application Muncie. Not sure what Olds or Buick was doing during '71-2 models. On a '71 455 HO, its original M22, the side cover will have the boss, but it is capped off with a special plug, no TCS switch.
The last style has a boss off the 3-4 and another angling down off the 1-2. This style Muncie side cover was used on '74 models, believe the '74 M20 I have in the racks is vin stamped from Corvette usage.
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Buzzards gotta eat... same as worms.
Last edited by 'ol Pinion head; 07-09-2015 at 03:42 PM.
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