My mother-in-law has been approached about selling a 4 speed Muncie transmission that her late husband removed from a 1967 Camaro, and she would like to know what a reasonable selling price would be. I have no idea, so I thought I would ask the knowledgeable folks here. I'd hate for someone to take advantage of an elderly lady by lowballing her on this.

Below are pictures of the transmission to help identify it and hopefully get an estimate of its value.

 

Where the tail housing and main case bolt together there is a mid plate. Look in that area for ant stamping of letters and numbers. That will ID the trans. Also you should remove side cover to inspect gears.

 

This shifter was sitting near the transmission so it likely came out of the Camaro as well.




, so I

 

Muncie cores go for $800-1200usd. Why is the output shaft offset in the seal, or is that the picture angle?

 

67 Camaros came from factory with Saginaw four speeds. The shifter is after market, so that leads me to believe the car has been upgraded to something other than factory running gear. Two rings on the input shaft would indicate a wide ratio Muncie. Also the speedometer cable input is on the left side so possibly it came from a Pontiac or other gm, not from Oldsmobile.

 

It has course splines consistent with a 70 or earlier year model GM.

 

Big blocks and some 295 hp 350s came with Muncies.

 

Looks like a later transmission to me. The side cover has a TCS switch. Driver side speedometer indicates likely a Pontiac. I’d guess it’s a ‘70. A drain whole in the 660 case. Would be ‘69 or later. Two grooves on the input shaft indicates M20. As previously suggested you need to clean the main case on the passenger side to see the partial VIN and the Pxxxxx number. That should identify it (at least the case) unless it’s a Frankenstein Muncie. If its a later trans the last letter in the Pxxxxx number would indicate M20-A, M21-B, or M22-C. My thought on the value of a core is you can get around $500-$650. M22s go for twice that or more.

 

This is the biggest problem. Parts are so interchangeable, that without knowing the full history, you really don't have anything other than a core. M22s have a tall 1st gear; they are desirable, but the people that want them don't know why. A 1" counter pin is also "more desirable" than a 7/8".

 

I wouldn't worry about that. The output shaft is centered by the driveshaft yoke, which rides in the bushing in the tailhousing. Without the yoke, there is movement in the output shaft.

 

Thanks for all the replies. I can't do any inspection as it's 1200 miles away at my mother-in-law's house, and she ain't gonna hunt for a wrench to take anything apart.

 

a better pic of this stamping would ID the main case

 

Than ks, I will see if she can get a good picture of that.

 

You can buy it, then. There isn't that much movement.

 

Here’s a new picture of the stamping.

 

P0K29A
P = Muncie
0 = 1970
K = July
29 = day of the month
A=M20

I still can't read the partial VIN. From that you could tell Make. I'd still guess a Pontiac (GTO,Tempest or LeMans?) due to drivers side speedometer. If the person buying it wants to inspect the gears make sure it's in 2nd gear so the forks and sliders line up easily for removal and reinstall of the side cover.

 

the VIN appears to be 0L102509 - 1970 - LOS ANGELES assembly - they built Chevelle, Monte Carlo, Camaro & FIREBIRD

 

the first 5-digits of the VIN would be:
22387 - Firebird
22487 - Esprit
22687 - Formula 400
22887 - Trans Am

 

You’re correct it is model year for the Muncie stamping. The partial VIN is missing a leading number but identification of a “core” for sale that’s enough, short of inspecting the gears and checking feel, etc.

 

70 Buick GS/GSX 4 speed Municie’s also locate the speedo drive on the drivers side. However, for Buicks the TCS switch is on the lower side of the side plate. If I am have his pic oriented correctly, the TCS is on the upper part of the side plate.

Edit —After looking side plate again the TCS switch is located the same as a a 70 Buick. Now I see the speedo drive is located on the upper right side of the plate. I need to double check how this compares with a Buick.

I also read the partial ViN as 0Lxxxxxx

0 = 1970 Model year

L = Van Nuys, Cal. Plant

Buicks were not made in that plant but Pontiacs were.