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

Torqued studs down on heads. A few studs show more threads, should I.......

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Old 01-27-2011, 10:27 AM
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Default Torqued studs down on heads. A few studs show more threads, should I.......

I hope I don't get bashed for this being a stupid question. But I torqued my heads down awhile back and yesterday when I was measuring my pushrod length I noticed a few of my studs are showing a few more threads compared to the others. Obviously meaning the nut is turned more on these studs. Yes I did use a torque wrench.

Should I back these few nuts off to even the distance from the top of the stud to the top of the nut. Like the rest are. Thanks for any help.
Old 01-27-2011, 11:15 AM
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NOOOOOOOOOOOOOOOOOOO!!!!!!!!!!!!!!! the distances are prob different because you didn't fully thread the studs into the block.........unless its excessive i wouldn't be too concerned.........
Old 01-27-2011, 11:35 AM
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what kind of lube did you use when you torqued them? also did you follow the proper torque patern?
Old 01-27-2011, 12:23 PM
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Originally Posted by quik95lt1
NOOOOOOOOOOOOOOOOOOO!!!!!!!!!!!!!!! the distances are prob different because you didn't fully thread the studs into the block.........unless its excessive i wouldn't be too concerned.........
I am 180% positive the studs were all the way down in the block.

Originally Posted by 1toofastlt1
what kind of lube did you use when you torqued them? also did you follow the proper torque patern?
Yes I have an lt1 rebuild book showing me the exact pattern. I used the new lube that arp has been advertising here lately. Can't remember what it is called.
Old 01-27-2011, 01:02 PM
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look at the bottom to see if they hit the block. i had victor reinz do that and torque out at 40in pnds they are junk. stock gm is the best way to go!
Old 01-27-2011, 01:27 PM
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My ARP heads studs went in evenly. Your threads may have been a little bit dirty causing them to stop prematurely.
Old 01-27-2011, 04:04 PM
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Did you clean the threads before installing the studs? Did you ensure that the correct length studs went in the correct holes? There are 7 long, 2 medium, and 8 short.
Old 01-27-2011, 04:12 PM
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Originally Posted by RamAir95TA
Did you clean the threads before installing the studs? Did you ensure that the correct length studs went in the correct holes? There are 7 long, 2 medium, and 8 short.
Yep, did all that. So does anyone see a problem backing off these couple of nuts till the thread count on these specific studs are even with the others?

Last edited by djm_e22; 01-27-2011 at 04:22 PM.
Old 01-27-2011, 05:10 PM
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Originally Posted by djm_e22
Yep, did all that. So does anyone see a problem backing off these couple of nuts till the thread count on these specific studs are even with the others?
yes definitely! You're not accounting for variations in the casting, possible variance in washer thickness, possible crush of the aluminum from too much torque, etc.

I'd hate to see you back a stud out... good luck cleaning and successfully resealing it without ******* up the headgasket.
Old 01-27-2011, 06:57 PM
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Originally Posted by Wicked94Z
yes definitely! You're not accounting for variations in the casting, possible variance in washer thickness, possible crush of the aluminum from too much torque, etc.

I'd hate to see you back a stud out... good luck cleaning and successfully resealing it without ******* up the headgasket.
Cool. Thanks man. You didn't have to cuss though. JK
Old 01-27-2011, 08:37 PM
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Since when did we torque heads down by counting threads? You use a specific recommended tq value for a reason, back it off and you are no longer at the proper tq.

Does that not make sense?
Old 01-27-2011, 10:42 PM
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Originally Posted by gregrob
Since when did we torque heads down by counting threads? You use a specific recommended tq value for a reason, back it off and you are no longer at the proper tq.

Does that not make sense?
I wasn't saying torque the heads by thread count. I just simply noticed a couple studs of the same length were showing a bit more threads. All were using the same lube so I was confused how these specific studs were able to get more turns on them. I thought the actual goal was to have an even clamping load throughout the head. So my thinking, with all things being equal, was that these specific studs were able to get more turns which if everything was equal would cause them to have more clamping in that part of the head. Causing an uneven clamping load.

But as the guy said just before you posted all things are not equal. Hope you understand why I thought it was a logical question. My apologies if it wasnt.

Last edited by djm_e22; 01-27-2011 at 11:25 PM.
Old 01-27-2011, 11:15 PM
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My ARPs had some variances too, none too excessive that I can remember but I do recall some having a little more showing then others after tightening.
Old 01-28-2011, 12:25 AM
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if you followed proper torque sequence and your wrench went CLICK...dont worry. threads on a stud have nothing to do with the correct torque on a head. you could have a variance in thread depth in the block, etc, etc....unless its an unreasonable amount on one stud and half a nut on another just let it be.
Old 01-28-2011, 01:20 AM
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if it aint broke dont fix it
Old 01-28-2011, 05:18 AM
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I'm not going to touch it. Just wanted to get some opinions, especially since I hear about studs leaking alot.

Last edited by djm_e22; 01-28-2011 at 07:02 AM.
Old 01-28-2011, 01:51 PM
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Dont ever torque down rod bolts using the thread shown method......



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