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Valve Cover Torque

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Valve Cover Torque

Posted: 11/14/02 9:58amMessage 1 of 9
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Eagleville, PA - USA
Joined: 11/1/2001
Posts: 27368
Vette(s): Used to own a 1979 Corvette now owned by JB79
Does anyone know the specs for the correct Torque of the valve cover bolts on a 350 small block?

Thanks!

-Adam Wartell
NCM Lifetime Member #1222
Founder: Vette Registry 

My first Vette, now owned by JB79:

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Valve Cover Torque

Posted: 11/14/02 3:07pmMessage 2 of 9
g
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DOWNINGTOWN, PA - USA
Joined: 11/24/2001
Posts: 962
Vette(s): 1969 Monza Red Black Conv / Black Vinal hardtop 454/480 Tremec 5 Speed 308 Posi.Black Leather Interior, PS, PW, Air cond., tilt/tele,AM/FM Cass.-5 Pack CD, Hurst Shifter, side pipes 2004 Yellow convertible with black top and black interior
I don't think I have EVER seen anyone use a torque wrench on a valve cover bolt. Everyone just snugs them up and looks for leaks. If it leaks, tighten a little more.
That of course does not mean there are no torque specs, I've just never seen it done. |headscratch|
Along the same line, does anyone out there know of a manual ( book, whatever ) that lists torque specs for Chevy engines? If so, what is the name of it?
Thanks
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Valve Cover Torque

Posted: 11/14/02 3:48pmMessage 3 of 9
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Vette(s): 1982 blue cpe AFR HEADS 4 DCOE WEBER CARBS, CAM TECHNIQUES, msd , on board ign control and lots of other mouse food
Glenn what engine do you want them for ,,let me know and I will send them to you

g
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Valve Cover Torque

Posted: 11/14/02 9:08pmMessage 4 of 9
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WEST HAVEN, CT - USA
Joined: 8/12/2002
Posts: 107
Vette(s): 1971 coupe brands hatch green with saddle interior
Motors manuals not only list for chevy but corvette in particular. I have a couple of older ones but they do not list valve covers torque specs. Not to say that someone out there dosn't. The problem is that many are base on bolt diameter and not always application, as is the case of a valve cover because gasket type should be a factor(rubber-Cork)
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Valve Cover Torque

Posted: 11/14/02 10:37pmMessage 5 of 9
j
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Eastern part of, CT - USA
Joined: 1/29/2002
Posts: 319
Vette(s): White 73 convertible - 350/auto, A/C PS, PB, PW, leather, t/t, two tops Also had a 69 t-top 20 years ago
The book to get is How to Rebuild Your Small Block Chevy by David Vizard.

I think the torque is only 10 ft-lbs, same as oil pan bolts.

If you are using tin covers, hit the holes from the bottom with a ball peen hammer to raise them up a little, they get distorted by people trying to fix dried out leaky gaskets with more torque.
|hammer|

Joe

|UPDATED|11/14/2002 10:37:19 PM|/UPDATED|
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Valve Cover Torque

Posted: 11/15/02 8:19amMessage 6 of 9
p
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WEST HAVEN, CT - USA
Joined: 8/12/2002
Posts: 107
Vette(s): 1971 coupe brands hatch green with saddle interior
Found It in Corvette 1966-82 shop manual by motor books international. Its listed for sale in the right side pannel of this page from time to time. Rocker arm cover torque 50-55 LB-In. Be careful now thats inch pounds per not foot pounds. A standard torque wrench is in foot pounds. I don't know what the conversion is. |bouncy|
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Valve Cover Torque

Posted: 11/15/02 10:56amMessage 7 of 9
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CONYERS, GA - USA
Joined: 3/14/2002
Posts: 123
Vette(s): 1972 Ontario Orange Coupe
12 inch/pounds equals 1 foot/pound.

55 in/lbs = ~4.5 ft/lbs -- much too low to measure with a standard ft/lb torque wrench. If you want to torque them, you will need a in/lb torque wrench.
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Valve Cover Torque

Posted: 11/18/02 6:53amMessage 8 of 9
g
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DOWNINGTOWN, PA - USA
Joined: 11/24/2001
Posts: 962
Vette(s): 1969 Monza Red Black Conv / Black Vinal hardtop 454/480 Tremec 5 Speed 308 Posi.Black Leather Interior, PS, PW, Air cond., tilt/tele,AM/FM Cass.-5 Pack CD, Hurst Shifter, side pipes 2004 Yellow convertible with black top and black interior
George,
What ever you have on 427 and 454 would be greatly appreciated.
Would probably be easy to get together over a beer somewhere.

Thanks
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Valve Cover Torque

Posted: 11/18/02 1:24pmMessage 9 of 9
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GREENSBURG, PA - USA
Joined: 12/4/2001
Posts: 259
Vette(s): 1976 L48 RoadDemon carb, Weiand intake, 3:36 gears, DUALS.
50 in/lbs is correct. That's for the cork type gaskets. I would assume other type of gaskets would be the same. 50 in/lbs is not very much. Replaced the valve cover gaskets last year and used a nutdriver to tighten the bolts. I was going to buy the expensive gaskets but the local vette guy said the cork works well because it will swell slightly and make a good seal.
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