CRG Discussion Forum
Camaro Research Group Discussion => Originality => Topic started by: Edgemontvillage on December 17, 2013, 06:58:28 PM
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I discovered (with help from Jerry M) that the drain and fill plugs in my 3/69 build date Muncie M22 transmission were likely from either a late 1969 or post 1969 production M22. The plugs are made by Lisle and I have seen them stamped with a P, W (with underline), the Lisle script only, with the Lisle Magnetic 2 script and Lisle Magnetic 3 script. The Lisle Magnetic 2 design is correct for my transmission build date and most early/mid 1969 and prior M22 production transmissions. The Lisle Magnetic 2 plugs also have a unique dual spade magnet design (see "bottom view" photo).
My M22, "before" photo, Lisle Plugs with P stamping
(http://imageshack.us/a/img823/9526/bz4i.jpg)
Lisle Magnetic 2 script plugs, top view
(http://imageshack.us/a/img543/6628/zw8y.jpg)
Lisle Magnetic 2 script plugs, bottom view
(http://imageshack.us/a/img29/4708/fvkz.jpg)
The installed "after" photos: Lisle Magnetic 2 script plugs
(http://imageshack.us/a/img546/903/tffo.jpg)
(http://imageshack.us/a/img14/2741/ztv5.jpg)
(http://imageshack.us/a/img823/3830/6hzp.jpg)
"Other" Lisle transmission plugs I have seen:
(http://imageshack.us/a/img29/5597/z82x.jpg)
Typical of magnetic bottom design of most Lisle plugs I have seen.
(http://imageshack.us/a/img826/3350/31wd.jpg)
(http://imageshack.us/a/img440/8522/y685.jpg)
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Did Jerry M say that m-22 the used a magnetic fill plug ? My original m-22 only had a magnetic plug on the drain and the fill plug was non magnetic.
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Looks good Lloyd. Those are correct per my discussion with Jerry as well. Here's the plugs that are on my Z's original M22. After Jerry rebuilt it, he requested follow-up pics for his files and research. Confirmed original for the car/trans. Built date of the car is 04B. Note that the trans came with two magnetic plugs - both the same.
(http://i1061.photobucket.com/albums/t478/jwlittooy/Trans%20Drain%20Plug/DSC_9248_zps0d9c0d5f.jpg) (http://s1061.photobucket.com/user/jwlittooy/media/Trans%20Drain%20Plug/DSC_9248_zps0d9c0d5f.jpg.html)
(http://i1061.photobucket.com/albums/t478/jwlittooy/Trans%20Drain%20Plug/DSC_9250_zpsd7969f21.jpg) (http://s1061.photobucket.com/user/jwlittooy/media/Trans%20Drain%20Plug/DSC_9250_zpsd7969f21.jpg.html)
(http://i1061.photobucket.com/albums/t478/jwlittooy/Trans%20Drain%20Plug/DSC_9256_zpsea9d8917.jpg) (http://s1061.photobucket.com/user/jwlittooy/media/Trans%20Drain%20Plug/DSC_9256_zpsea9d8917.jpg.html)
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Looks good Lloyd. Those are correct per my discussion with Jerry as well. Here's the plugs that are on my Z's original M22. After Jerry rebuilt it, he requested follow-up pics for his files and research. Confirmed original for the car/trans. Built date of the car is 04B. Note that the trans came with two magnetic plugs - both the same.
Thanks for the confirmation Hans, your Lisle plugs look identical to my replacements.
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Nice work on documenting the different plugs Lloyd. I was unaware until now that the M22 had a drain plug. Great detail here, keep up the good work.
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Nice work on documenting the different plugs Lloyd. I was unaware until now that the M22 had a drain plug. Great detail here, keep up the good work.
All M22's had a drain plug. The cast boss for it was on all Muncie cases, but it was only drilled/tapped for a plug on M22's and on ALL Muncies starting in 1970. Many rebuilders also added the drain plug to pre-1970 Muncies.
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I have visited the Lisle Manufacturing plant that made the original plugs. I tried to see if they could make them again with the same original lettering. No dice.
I believe the LISLE 3 plug was in use prior to the M22 being introduced (so it is prior to 1965).
There are at least three minor variations of the LISLE MAGNETIC 2 plug. The 1969 model year type plugs were also used in 1968 M22s in Camaros.
From what I can tell, the P and LISLE plugs are 1970 and later. Possibly some in very late 1969 but not sure on that. Typically used when there was both a fill and drain plug.
The W plug with underline is a fill plug, the normal plug for M20 and M21 transmissions 1969 and earlier.
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I have visited the Lisle Manufacturing plant that made the original plugs. I tried to see if they could make them again with the same original lettering. No dice.
I believe the LISLE 3 plug was in use prior to the M22 being introduced (so it is prior to 1965).
There are at least three minor variations of the LISLE MAGNETIC 2 plug. The 1969 model year type plugs were also used in 1968 M22s in Camaros.
From what I can tell, the P and LISLE plugs are 1970 and later. Possibly some in very late 1969 but not sure on that. Typically used when there was both a fill and drain plug.
The W plug with underline is a fill plug, the normal plug for M20 and M21 transmissions 1969 and earlier.
Bryon, thanks for filling in some additional details on the applications.
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Lloyd, I changed your quote from my earlier post because I made some edits after you made the quote.
Your second picture shows two types of the LISLE MAGNETIC 2 plug. I will try to post a picture of the other one later.
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Well I guess there are maybe four different LISLE MAGNETIC 2 plugs. And the 3 plug is a larger diameter.
Plug with the 2 in the lower left is probably a 1965-1967 M22 plug.
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Another picture showing plugs from both sides. From left to right.
LISLE MAGNETIC 2
LISLE magnetic
P magnetic
W fill plug (note - not magnetic)
No marks magnetic - current plug that is not correct, but is functional for the task. I have about 100 of these new.
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Another picture showing plugs from both sides. From left to right.
LISLE MAGNETIC 2
LISLE magnetic
P magnetic
W fill plug (note - not magnetic)
No marks magnetic - current plug that is not correct, but is functional for the task. I have about 100 of these new.
Quite the collection Bryon.
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Another picture showing plugs from both sides. From left to right.
LISLE MAGNETIC 2
LISLE magnetic
P magnetic
W fill plug (note - not magnetic)
No marks magnetic - current plug that is not correct, but is functional for the task. I have about 100 of these new.
Quite the collection Bryon.
Impressive!
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I have one to give away, how do you work out who you give it to????
Not sure if it's for a '69 though :-\
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Come up with a contest of some sort.. those are fun.. :)
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Are the stamped ones designation plugs STEEL or forged vs the other's which appear to be cast.
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James, I can not say for sure, but the W fill plug appears to be cast. The others appear to be forged.