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Old 05-14-2012, 04:44 PM
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Torque Setting Center Bolt Valve Covers

Hi everyone,

I have a carbed 5.7 vortec with chrome center bolt valve covers. I recently bought my first inlbs torque wrench and am looking for the torque settings for the valve covers.

I have googled it over and over the last couple days, but come up with nothing conclusive. Suggestions range from 48 in lbs to the most common answer 106 in lbs.

I have torqued to 106 (being the most common answer) but this seems really tight almost to the point of stripping the threads. Does anyone actually know the factory torque settings for these valve covers, I really want to get it right and figure not much point torquing it if your target figure is incorrrect....

Many thanks for your time

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Old 05-14-2012, 06:29 PM
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Is there even a listed torque value for it? Tighten them until they are snug and then a go a little more. Just like you would do for a spark plug. You only need to tighten them enough to prevent oil from dripping. The gasket will have some "give" to it as you tighten.
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Old 05-14-2012, 09:10 PM
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They are valve cover bolts. Really? I would guess no more than 5-6 ft lbs but I wouldn't even bother to measure. Snug em down and maybe a 1/4 to 1/2 turn more.
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Old 05-15-2012, 03:55 PM
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Hi guys thanks for your replies.

I was kinda hoping someone may have a service manual for a 96-98 Tahoe or Suburban or other vehicle with the vortec that might list the figure. Both my old service manuals for different cars have torque settings for valve covers so I figure there should be one.

Sorry I realise its a bit anal, but if you can be accurate why not do so?

Thanks again hopefully someone might have the service manual. cheers
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Old 05-15-2012, 04:34 PM
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There are sites online where you can buy the service manual you need.
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Old 05-15-2012, 08:26 PM
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Quote:
Originally Posted by holden350
Hi guys thanks for your replies.

I was kinda hoping someone may have a service manual for a 96-98 Tahoe or Suburban or other vehicle with the vortec that might list the figure. Both my old service manuals for different cars have torque settings for valve covers so I figure there should be one.

Sorry I realise its a bit anal, but if you can be accurate why not do so?

Thanks again hopefully someone might have the service manual. cheers
106 in/lb.
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Old 05-20-2012, 08:33 PM
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I've gone through this exact thing. Your valve covers are aftermarket I assume. The factory ones have a tube that will prevent the covers from collapsing, so the 106in lbs that the service manual says is for that type of valve cover. If you try to torque what you have to 106in lbs they could bend which could also cause leaks.

Don't over think it. Use a 1/4" ratchet and socket and do what the people before me have posted.
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Old 05-20-2012, 09:08 PM
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Hi guys thanks for the replies. Cobolt the 106 in/lbs did you get that from GM manual I assume so, so it looks like there is a figure for it thanks for confirming.

And Pre-tuner, very good point, mine are chrome, so I assume they are aftermarket. They do have tubes running down where the bolts go thru, which look like they contact the head and prevent collapsing the cover, similar to the OEM ones. So I might be safe with the 106 in mentioned by Cobolt.

Again, thanks very much for your replies! I know i'm overthinking but its better than overtightening! :-)
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Old 05-20-2012, 10:00 PM
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The 106in lbs number is what was in my service manual for both my '91 and a '99 I used to have.

Since you have the tubes you should be good.
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Old 05-21-2012, 05:51 AM
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Be careful... as stated the factory valve covers had supports that the bolt goes through and they sit on the head around the area that the bolts go into the head. My aftermarket valve covers did not and I ended up cracking one because I used the factory torque. Just snug them down.
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Old 05-21-2012, 06:51 AM
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when in doubt

When ever I anm in doubt of torque values I refer back to torque specs for the bolt as opposed to the torque spec for the job. reference guide http://dodgeram.org/tech/specs/bolts/SAE_bolts.html multiply by 12 for inlbs
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