LBZ: Main bolts

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
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38
34
Lexington, Ky
Is there a cut off date on the main bolts? Some have a zero on the head, some don't. I need to know which to pick up. I'm thinking I need the zero ones, but I don't have the motor here to check. This is an lbz. 6e216564 is the last eight if that tells anyone something.

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x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
Thats what I was thinking. Had the guy behind the counter get both shipped there just incase. Not that it matters, but are they different lengths or something? About the only reason I could see if they only have 1 part number for the stud kit.
 

ripmf666

Active member
Sep 20, 2006
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Wentzville Mo
Yes the ones with the o in the head are longer. And arp makes 2 main stud kits for the Dmax but most just use and stock the longer ones it does not hurt anything with studs.
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
Yes the ones with the o in the head are longer. And arp makes 2 main stud kits for the Dmax but most just use and stock the longer ones it does not hurt anything with studs.

That's the way I take it too. Thanks Henry, got to looking at mine and I do intact have 0 one them.

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x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
Also didn't get it because I know its the wrong balancer bolt, they had a bolt not much bigger diameter than the cam bolt but it was in a package that said 11680682??? Never before have I seen a bolt mismarked by GM, kinda odd . The old part number was 97329601, but I don't see how this bolt would work. It was a 6 point fwiw
 
Last edited:

ripmf666

Active member
Sep 20, 2006
15,123
14
38
47
Wentzville Mo
Also didn't get it because I know its the wrong balancer bolt, they had a bolt not much bigger diameter than the cam bolt but it was in a package that said 11680682??? Never before have I seen a bolt mismarked by GM, kinda odd . The old part number was 97329601, but I don't see how this bolt would work. It was a 6 point fwiw

Just had this happen on the balancer bolt. In my last order they sent most of the 12 point the sent these darn 6 points with a little air plane on the bag and the cost was a lot less.
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
1
38
34
Lexington, Ky
Just had this happen on the balancer bolt. In my last order they sent most of the 12 point the sent these darn 6 points with a little air plane on the bag and the cost was a lot less.

So is this the new bolt? If that's the case ill probably just use my old one. It looks cheaply made.

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