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700R4 & torque converter ID

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Old 10-09-2007, 09:26 PM
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Car: '91 Formula,'02 Silverado,'15 200s
Engine: L98, LQ4, and 3.6 Pentastar
Transmission: 4L60/4L80E/9HP48
Axle/Gears: 2.73posi/3.73posi/3.73
700R4 & torque converter ID

I've just removed the tranny from my 86'T/A, and replaced it with a
4L60 from a 91' L98 Z28. I'm trying to identify what year the 700R4
that I took out is. I know it came out of a 1/2 ton Silverado, possibly
an 85 or 86'. I also need to find out what torque converter I have in
my 4L60. Here is the ID off of the Silverado 700: 61 3MDY. Here is the
ID off the converter: DGCF.
Old 10-10-2007, 01:07 AM
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Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: 700R4 & torque converter ID

D = 85-up 30spline G= approx 1400RPM C= dampner type (TCC Clutch Plate) F= 3 Square Lugs on flywheel side (mounts) A DCLF which I think was the code on the S10 4.3 Converter is a popular mod. It has one of the highest stock stall speeds. Something like 2100 tops. V8s got less stall
----------
Im not sure exactly anout the Tranny tho. That ID looks a little jumbled. But the 6 does indicate a 1986. MD is the model (700R4). Should read 6 MD ### and a D,N,A,B,C or H last. That last letter indicated shift. N=Night, D=Day, A&B=1stShift and C&H-2ndShift. Example : 6 MD 134 B

Last edited by Mikz86TA; 10-10-2007 at 01:12 AM. Reason: Automerged Doublepost
Old 10-10-2007, 06:41 PM
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darkride86T/A's Avatar
 
Join Date: Jul 2005
Location: North Carolina(but you'll never take the DC out of me!!!)
Posts: 186
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Car: '91 Formula,'02 Silverado,'15 200s
Engine: L98, LQ4, and 3.6 Pentastar
Transmission: 4L60/4L80E/9HP48
Axle/Gears: 2.73posi/3.73posi/3.73
Re: 700R4 & torque converter ID

Thanks for the info Mikz86TA, I'll take another look at the tranny ID and make sure it's correct when I go back to my buddy's house to pick it up. I hope your rebuild is going well.
Old 10-11-2007, 12:19 AM
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Car: '86 Trans Am and '03 S-10
Engine: 355ci and 4.3l
Transmission: 700R4 and NV3500
Axle/Gears: 7.625/3.42 Auburn and 8.5/3.08 Gov-
Re: 700R4 & torque converter ID

No Problem and THX. I have to find time to get back on it. A few personal things going on right now keeping me away from it. But this weekend I should be getting the rest back together. Maybe put it in next week sometime too =)
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