MUNCIE METAL TAGS

[P.J.]

Kurt
Please correct the errors so that we can all get it straight
thanks
PJ

[Kurt S]

I'll try, but it's not happening soon....
Not an easy topic and I have enough pet projects.

[Mr70]

I agree with the 6767 issue,all Chevrolet materials I've seen report it should be a 9.
I have two actual 9 tags here as well.
I can not confirm if this typo was made by the author of the list or the source he got it from,but it does look like an error.

[Stefano]

[ QUOTE ]
Lots of people contributed,but credit goes to Chuck Hanson for publishing this all in last months Chevelle World.Box #28 on the Buildsheet will reflect the 2 letter code as well.
<u>Muncie ID Tags</u>

1964 M20 3841435
1965 M20 3857577
1965 M20 3857578 Z16
1966 M20 3870357 L-34 L-35
1966 M20 3890534 L-78
1966 M21 3877459 ALL
1966 M22 3879993 L-78
1967 M20 3870357 L-34 L-35 L-79
1967 M21 3877459 ALL
1967 M22 3879993 L-78
1968 M20 3915079 L-34 L-36 L-78 L-79
1968 M21 3915085 L-34 L-36 L-78 L-79
1968 M22 3925626 L-78
1969 M20 3950301 L-48 L-35
1969 M20 3946767 L-34 L-78
1969 M21 3946798 ALL
1969 M22 3950318 L-78 COPO L72
1970 M20 3952659 WB
1970 M21 3968012 (disc.3-11-70)
1970 M21 3968011 WL
1970 M22 3978766 WO
1971 M20 3974484 WN
1971 M22 3978766 WO
1972 M20 3974484 WN
1972 M22 6271517 WJ

[/ QUOTE ]

I have a low mileage, very original 1966 SS Impala 327/275 hp 4 speed car, built the third week in October which has a 3870372 tag. Can anyone confim the application?

[bkhpah]

1969 M22 tag from Ed Ernsts COPO..BKH

[Mr70]

Stefano
Take this with a grain of salt as my records are not as complete as others.
I'm finding the Muncie M-20 #3870372 was installed behind the 1966-67 396cid &amp; 427cid vehicles only.
It also shows when the 1966 Passenger series got a 327cid,it got Muncie M-20 #3884603 (Not used behind L-79).
A friend of mine who owns a 1967 327cid Passenger series has an M-20 w/#3916108 tag on it.
I'm sure crash could help narrow this down some more.

[westonz28rs]

How about this tag number 3964502? Was in the bucket that held a CE stamped muncie m 20 all there but in many pieces. Thank you for the information.

[Mr70]

That's a Muncie 4spd. 2:52:1 ratio used originally in:
1968 Passenger series w/396cid &amp; 427cid.
1968 Camaro,Chevy II w/327cid &amp; 350cic &amp; 396cid.

And recommended replacement in:
1967 Camaro 350cid &amp; 396cid.
1966-68 Chevelle,Camaro 327cid.
1965-67 Passenger series.
1966 Chevy II.
1965 Chevelle,Chevy II.

[Chevy2]

Well, while were at it whats this # 3915077

[Mr70]

That's a Muncie 4spd. wide ratio 2:52:1 as well.
Used originally in:
*1968 Passenger series w/8.15 X 15 tires w/3:55 axle AND when 396cid or 427cid. equipped.
*1968 Corvette w/o Posi or 3:55 axle.

And Recommended replacement in:
*1965-67 Passenger &amp; Corvettes when NOT close ratio equipped.
*1965 Corvette w/o Spcl. Hi-Perf or Fi.

It was soon superceded in 1970 by Muncie #3964507 for same applications.