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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LT1 Intake bolts Torque spec

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Old Feb 17, 2010 | 09:37 AM
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Default LT1 Intake bolts Torque spec
Last time I tried to follow the Lt1 torque specs on a 97 camaro I broke a damn intake bolt. Anyone have a part number to some ARP's or a better way to torque these damn stock intake bolts. 71 first pass and then 35 second pass is not woking for me. I don't want to F' up these heads.
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Old Feb 17, 2010 | 09:53 AM
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did you tighten them in the right order? must have been a weak bolt or something because ive never had an issue with 71 / 35
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Old Feb 17, 2010 | 09:55 AM
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Originally Posted by jaycenk
Last time I tried to follow the Lt1 torque specs on a 97 camaro I broke a damn intake bolt. Anyone have a part number to some ARP's or a better way to torque these damn stock intake bolts. 71 first pass and then 35 second pass is not woking for me. I don't want to F' up these heads.
71 inch pounds first pass and 35 foot pounds second pass is the GM spec.
Cant see how your busting bolts at these specs unless the torque wrench is busted. I would expect the head threads to strip before busting a bolt.
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Old Feb 17, 2010 | 09:56 AM
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Really? maybe but now it's got me spooked to do it again. Can you explain how you did yours so I can compare? I know it's straight forward but I would like to compare.
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Old Feb 17, 2010 | 09:58 AM
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I'm using two wrenches but maybe it was just a freak bolt .
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Old Feb 17, 2010 | 09:59 AM
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what do you mean two wrenches?


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Old Feb 17, 2010 | 10:21 AM
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just follow that and you should be all set^^
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Old Feb 17, 2010 | 10:27 AM
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Thats what I did and I broke number 2.
I have a deflection wrench I use to check the clicker style wrench to make sure it's on the money.
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Old Feb 17, 2010 | 11:00 AM
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The last time I heard of anyone breaking an intake bolt was when the person was using 71 LB. FT instead of IN for the first pass . At only 35 LB FT total, no intake bolt should be breaking.
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Old Feb 17, 2010 | 01:59 PM
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Originally Posted by shbox
The last time I heard of anyone breaking an intake bolt was when the person was using 71 LB. FT instead of IN for the first pass . At only 35 LB FT total, no intake bolt should be breaking.
You got me I miss read that!!! That is what my problem was I miss read it as ftlbs insted of inch. Ok so now I know. Thank god the bolt broke then insted of the head threads. thank god for antiseeze. I only did 2 so I will get a new set of gaskets and check those threads.
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Old Feb 17, 2010 | 02:00 PM
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Originally Posted by Badazz 97 TA
what do you mean two wrenches?


Thanks for the image I now see the inch lbs
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Old Feb 17, 2010 | 02:03 PM
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I don't have an inch lbs wrench do I need it just for this or is there a way to do ftlbs on the first pass?
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Old Feb 17, 2010 | 02:11 PM
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71 in. lbs. = 5.916666667 ft. lbs.

72 in. lbs. = 6.0 ft. lbs. ~close enough~
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Old Feb 17, 2010 | 02:12 PM
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Originally Posted by jaycenk
You got me I miss read that!!! That is what my problem was I miss read it as ftlbs insted of inch. Ok so now I know. Thank god the bolt broke then insted of the head threads. thank god for antiseeze. I only did 2 so I will get a new set of gaskets and check those threads.
Wow why did you think you went so tight the first pass and less the next? Anyway just get them snug with a ratchet one pass and you can do them all at like 10 or 20lbs so their all the same and then torque them to spec from there
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Old Feb 17, 2010 | 02:12 PM
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Originally Posted by Gojira94
71 in. lbs. = 5.916666667 ft. lbs.

72 in. lbs. = 6.0 ft. lbs. ~close enough~
Cool thanks man. I will give that a shot tonight.
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Old Feb 17, 2010 | 02:16 PM
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Originally Posted by bigj2717
Wow why did you think you went so tight the first pass and less the next? Anyway just get them snug with a ratchet one pass and you can do them all at like 10 or 20lbs so their all the same and then torque them to spec from there
Yea I don't know I quit smoking and needless to say I started back up because my brain will not function when I quit. I don't know what I was thinking. I did think it was odd but not enough going on up stairs to question it. I'll do that tonight and I should not have a problem this time.
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Old Feb 17, 2010 | 02:26 PM
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I once had a problem with the threads striping had to say bi bi to the heads. In the future is there a way to repair the threads other then heli-coils
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Old Feb 17, 2010 | 04:42 PM
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Originally Posted by stburgpete
I once had a problem with the threads striping had to say bi bi to the heads. In the future is there a way to repair the threads other then heli-coils
A solid insert (like a Timesert) is an alternative to Heli-coil.
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Old Feb 17, 2010 | 08:26 PM
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Originally Posted by shbox
A solid insert (like a Timesert) is an alternative to Heli-coil.
Never heard of it. can you help me out with info?
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Old Feb 17, 2010 | 08:38 PM
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Originally Posted by stburgpete
Never heard of it. can you help me out with info?
http://www.timesert.com/
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