#1  
Old 01-10-2024, 06:12 PM
unruhjonny's Avatar
unruhjonny unruhjonny is offline
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Join Date: May 2004
Location: Calgary, AB, Canada
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My guess is that this is from a Lemans;
I believe that for 1972-1974, outside of trucks, these were mostly found in the A-bodies - but I am unclear on which (if any) Regals or Cutlasses could receive these.

Keep in mind that the 1973 Lemans was the basis for that year's GTO.

I have 1972 and 1973 "Accessorizers";
Both of these show that the 6 cylinder and 350 came standard with the Saginaw, while the 'M13' was available with the 350 & 400 in everything except the station wagon.
It also says that the 'M13' was included with the GTO & GT options.

Can I ask if this is an "A" or "B" gear set?

I understand that normally the floor shifted Muncie three speeds were "B" gear sets, but I have read that some "A" gear set transmissions may have been assembled with a tail housing for a floor shifter... but info on these transmissions is rather spotty.

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1970 Formula 400
Carousel Red paint on Black standard interior
A no-engine, no-transmission, no-wheel option car.
Quite likely one of few '70 Muncie three speed Formula 400's left.


1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing)
2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs)
  #2  
Old 01-11-2024, 09:23 AM
importsmasher's Avatar
importsmasher importsmasher is offline
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Location: Western Tennessee
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Quote:
Originally Posted by unruhjonny View Post
My guess is that this is from a Lemans;
I believe that for 1972-1974, outside of trucks, these were mostly found in the A-bodies - but I am unclear on which (if any) Regals or Cutlasses could receive these.

Keep in mind that the 1973 Lemans was the basis for that year's GTO.

I have 1972 and 1973 "Accessorizers";
Both of these show that the 6 cylinder and 350 came standard with the Saginaw, while the 'M13' was available with the 350 & 400 in everything except the station wagon.
It also says that the 'M13' was included with the GTO & GT options.

Can I ask if this is an "A" or "B" gear set?

I understand that normally the floor shifted Muncie three speeds were "B" gear sets, but I have read that some "A" gear set transmissions may have been assembled with a tail housing for a floor shifter... but info on these transmissions is rather spotty.
I am not sure which gearset this one has. I didn't check before we installed it in the car. Is there a way to tell without pulling anything? It is floor shifted; it came with the factory ITM shifter.

Importsmasher

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Scott Baggiore

66 GTO convertible 389/4 speed (parents bought new)
73 Firebird Formula 400/4 speed
74 GTO 455/4 speed
74 Grand Am
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