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Print in friendly format Send this term to a friend  4L80E
Automatic Transmission - 4 Speed

1st Gear: 2.43
2nd Gear: 1.49
3rd Gear: 1.00
4th Gear: 0.75

Reverse: 2.07

- Used in production GM models...
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lezpayne Corvette 1980 rear diff posidrive
Guru Newb
utah
2 Posts
Member since:
3/6 18:51



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Technical question ! I am rebuilding the rear diff Posidrive on my 1980 corvette, i have replaced the clutch plates with a new kit. My question is how tight should this be to turn in the vice. Is there a set torque value that i could expect to have before it begins to turn.
Posted on: 3/6 19:01
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Matatk Re: Corvette 1980 rear diff posidrive
Webmaster
SW Chicago Burbs
21292 Posts
Member since:
2008/1/7 0:00



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Welcome to the site!

Here is a pretty good article with some pictures and info:

http://www.superchevy.com/how-to/engi ... -and-c3-corvette-rearend/

From the article it states:

"10. Eddie checks the clutch clearances with a torque wrench a second time to ascertain proper clearance. The carrier should turn with some resistance, but not extreme effort. The resistance shouldn’t be any greater than 45-50 ft-lb as a rule."

Is that your question or something else?

Matthew
Posted on: 3/6 21:23
_________________

1989 Corvette...custom 383 stroker, superrammed and cammed, built trans with PeteK 2800 stall. Mustang dyno results: 336 rwhp / 419 rwtq.
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Matatk Re: Corvette 1980 rear diff posidrive
Webmaster
SW Chicago Burbs
21292 Posts
Member since:
2008/1/7 0:00



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Some more info I found online...not specifically mine.

The 80-82 is a Dana 44 (I've seen it called a Super Dana 44) and it's specific to those years.

These should be the torque values:

These values are directly out of the GM Shop Manual for the 1980 Corvette:
Pinion nut- 200-220 lbs. ft.
Ring gear bolts- 45-60 lbs. ft.
Bearing caps- 60-70 lbs. ft.
Carrier front support- 65 lbs. ft.
Carrier cover to frame- (sidemember bracket) 95 lbs. ft.
Rear spring plate to carrier- 45 lbs. ft.
Strut bracket to carrier- 30 lbs. ft.
Camber Cam- 130 lbs. ft.
Strut rod to spindle Support Attachment- 75 lbs. ft.
Drive spindle nut- 100 lbs. ft.

"Lubrication: To refill add 4 oz. of GM 1052358 additive or equivalent, then fill to level of filler plug hole with GM 1052271 or 1052272 or equivalent."
Posted on: 3/6 21:40
_________________

1989 Corvette...custom 383 stroker, superrammed and cammed, built trans with PeteK 2800 stall. Mustang dyno results: 336 rwhp / 419 rwtq.
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lezpayne Re: Corvette 1980 rear diff posidrive
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utah
2 Posts
Member since:
3/6 18:51



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Thanks, that's exactly what i wanted.
Posted on: 3/7 21:09
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rklessdriver Re: Corvette 1980 rear diff posidrive
Senior Guru
Woodbridge, VA
1306 Posts
Member since:
2008/1/4 0:00



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I did this tutorial on inspection and rebuilding of the D44 Trac-Lock's a few years ago.

http://www.corvetteforum.guru/modules ... topic_id=17573&menumode=2

Will

Posted on: 3/8 18:02
_________________
1984 Corvette. 434 SBC with a Powerglide.
Best pass - 8.48@160MPH 1.23 60ft on MT 275/60R15 Radials.

1972 Corvette. LS5 454 BBC with M20 4 speed.
Best Pass - Doing good to just pass a gas station.
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