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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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DaleD Simple question about centerbolt valve covers
Senior Guru
Cuyahoga Falls, Ohio
1389 Posts
Member since:
2007/2/17 0:00



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I bought wire looms that use the center bolts for mounting. I have no leaks, and don't want to screw that up.

Is the torque on the center bolts critical? Should I be careful and torque them to spec, or just snug them up?

Thanks!
Posted on: 2008/5/20 13:54
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Whenever someone says "I'm not book smart, but I'm street smart", all I hear is "I'm not real smart, but I'm imaginary smart".
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SpectatorRacing Re: Simple question about centerbolt valve covers
Elite Guru
1721 Posts
Member since:
2007/12/29 0:00



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I just snug them up. All you need to worry about is that you have a nice seal around the top of the head. They're not really under any loading, they just keep the oil in the valvetrain from sloshing all over.

Snug them up, drive the car, and check for oil residue around the heads. If you are getting it, tighten them up more. You can get new o-rings for the bolts if you tighten too far and smash one. Happens to me all the time with how frequently I remove them.
Posted on: 2008/5/20 14:09
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Dads90 Re: Simple question about centerbolt valve covers
Guru
Pearland, Tx
318 Posts
Member since:
2008/2/2 0:00



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90 Inch pounds, just did mine. Even pressure helps keeps it leaks free.
Posted on: 2008/5/22 4:04
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1990 Silver Blue Metallic, ZF6, Hurst shifter, Z51, Dana 44 3.33 ratio, FX3 system, mostly stock.
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