Borg Warner Codes...
Thread Starter
Pro
Joined: Jun 2007
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From: Hastings MN
Borg Warner Codes...
What do I have?
Drivers side:
76S406837 or 6337 - doesn't match the car
WG 11526837
13-04
Pass. side:
6-10-75
130405903
WG Div
FpC 2
Thanks
Drivers side:
76S406837 or 6337 - doesn't match the car
WG 11526837
13-04
Pass. side:
6-10-75
130405903
WG Div
FpC 2
Thanks
Last edited by yel76low; Apr 21, 2008 at 08:09 PM. Reason: rest of vin #
Drifting
Joined: Sep 2006
Posts: 1,259
Likes: 2
From: MS
The 76S4..... would be the VIN stamp and the whole stamping should match the last numbers of your car's VIN if original.
The WG 11526837 I think would be the Warner Gear part number.
The 13-04, ? not sure.
6-10-75 is the casting date.
130405903, not sure the first numbers but the 903 means aluminum case (902 grey iron, 904 nodular iron).
WG Div, Warner Gear Division
FpC 2, ???
You might still be able to see a painted or ink stamped 2 letter code for the ratios, but these wore off in time.
There should have also been a tag attached that listed the ratio.
If you have the L48, you will have the M20 wide ratio (2.64 low), if you have the L82 it could be the M20 or M21 close ratio (2.43 low).
The WG 11526837 I think would be the Warner Gear part number.
The 13-04, ? not sure.
6-10-75 is the casting date.
130405903, not sure the first numbers but the 903 means aluminum case (902 grey iron, 904 nodular iron).
WG Div, Warner Gear Division
FpC 2, ???
You might still be able to see a painted or ink stamped 2 letter code for the ratios, but these wore off in time.
There should have also been a tag attached that listed the ratio.
If you have the L48, you will have the M20 wide ratio (2.64 low), if you have the L82 it could be the M20 or M21 close ratio (2.43 low).
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
130405903 - I think you're missing a number in there - should be 1304 065 903, which is just the maincase number for both 4-speeds (close or wide ratio). Unfortunately you can't tell the gearing you have from this.
You need to look below the sidecover on the main case for either an HS or an HW painted on there (goodluck)!
HS = Wide Ratio
HW = Close Ratio
Otherwise, you can pull the tranny and count rings.
The other 13-04... should be the sidecover number, which should continue 13-04-097-901
You need to look below the sidecover on the main case for either an HS or an HW painted on there (goodluck)!
HS = Wide Ratio
HW = Close Ratio
Otherwise, you can pull the tranny and count rings.
The other 13-04... should be the sidecover number, which should continue 13-04-097-901
Last edited by LeMans Pete; Apr 20, 2008 at 12:18 AM.
Thread Starter
Pro
Joined: Jun 2007
Posts: 634
Likes: 0
From: Hastings MN
130405903 - I think you're missing a number in there - should be 1304 065 903, which is just the maincase number for both 4-speeds (close or wide ratio). Unfortunately you can't tell the gearing you have from this.
You need to look below the sidecover on the main case for either an HS or an HW painted on there (goodluck)!
HS = Wide Ratio
HW = Close Ratio
Otherwise, you can pull the tranny and count rings.
The other 13-04... should be the sidecover number, which should continue 13-04-097-901
You need to look below the sidecover on the main case for either an HS or an HW painted on there (goodluck)!
HS = Wide Ratio
HW = Close Ratio
Otherwise, you can pull the tranny and count rings.
The other 13-04... should be the sidecover number, which should continue 13-04-097-901
Below the side cover... so actually on the bottom of the unit?
Thanks
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
Thread Starter
Pro
Joined: Jun 2007
Posts: 634
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From: Hastings MN
I just assumed that I had a wide ratio, but I was driving down the road a couple days ago and noticed that the police radar display said I was going 30 when I thought I should only be going about 25 (based on my RPM in 3rd gear). Turns out if I changed my gearing to the close ratio, my RPMs are right on with what the gun said. Being as I don't have a working speedo, I really should know my gearing accurately...
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Racer
Joined: Feb 2007
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From: liberty mo
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
Yeah, I couldn't see it down there.
I just assumed that I had a wide ratio, but I was driving down the road a couple days ago and noticed that the police radar display said I was going 30 when I thought I should only be going about 25 (based on my RPM in 3rd gear). Turns out if I changed my gearing to the close ratio, my RPMs are right on with what the gun said. Being as I don't have a working speedo, I really should know my gearing accurately...
I just assumed that I had a wide ratio, but I was driving down the road a couple days ago and noticed that the police radar display said I was going 30 when I thought I should only be going about 25 (based on my RPM in 3rd gear). Turns out if I changed my gearing to the close ratio, my RPMs are right on with what the gun said. Being as I don't have a working speedo, I really should know my gearing accurately...
I take it you didn't find the paint?
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Pro
Joined: Jun 2007
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From: Hastings MN
Yeah, its just that it matched so perfectly to the close ratio, so I thought maybe that's what was put in there. Then vin doesn't match my car, and I can't see any paint down there... so who knows.
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Joined: Jun 2007
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From: Hastings MN
So I did my own test.
I was going at 2400rpm in 4th, downshifted to 3rd, and ended up at 3000.
3000/2400 = 1.25
Did this a couple more times...
3300/2600 = 1.27
1700/1400 = 1.21
This all matches pretty good with the info for a M21 here: http://fiedlerh.home.att.net/BW.htm
I was going at 2400rpm in 4th, downshifted to 3rd, and ended up at 3000.
3000/2400 = 1.25
Did this a couple more times...
3300/2600 = 1.27
1700/1400 = 1.21
This all matches pretty good with the info for a M21 here: http://fiedlerh.home.att.net/BW.htm
Melting Slicks
Joined: May 2006
Posts: 3,438
Likes: 41
From: Raleigh NC
St. Jude Donor '13-'14
So I did my own test.
I was going at 2400rpm in 4th, downshifted to 3rd, and ended up at 3000.
3000/2400 = 1.25
Did this a couple more times...
3300/2600 = 1.27
1700/1400 = 1.21
This all matches pretty good with the info for a M21 here: http://fiedlerh.home.att.net/BW.htm
I was going at 2400rpm in 4th, downshifted to 3rd, and ended up at 3000.
3000/2400 = 1.25
Did this a couple more times...
3300/2600 = 1.27
1700/1400 = 1.21
This all matches pretty good with the info for a M21 here: http://fiedlerh.home.att.net/BW.htm
Melting Slicks
Joined: Jul 2004
Posts: 2,862
Likes: 195
From: Maryland
On a C-1 the W=Warner Gear-the letter G= the month the trans was assembled (Aug) -11= day- 5= year 2= 2nd shift . On a second line is the VIN derivative.(6837) If C-3 are coded the same the trans was assembled on Aug 11, 1975 on the second shift for car # 6837.
Last edited by Donald #31176; Apr 22, 2008 at 06:45 PM.
