Just checking on correct headgasket
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
Just checking on correct headgasket
I just wanted to verify on the correct head gasket.
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
Tech Contributor
Joined: Jan 2007
Posts: 19,347
Likes: 1,123
From: Dyer, IN
I just wanted to verify on the correct head gasket.
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
Pro
Joined: Dec 2003
Posts: 654
Likes: 1
From: chandler az
ARP claims using their lube gives much more accurate torqueing. You get a little pack of the lube with a new set of bolts. If I remember right, you torque the head down in sequence in incremental torque steps, then back off the tension and retorque down two more times, but I would double check with the instructions. If you bought the bolts used, you can get the lube from speed shops and the instructions can be found on the ARP website by part number. Part number 134-3609.
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
The instructions just say tighten in 3 equal steps to 75ftlbs on the larger bolts and 22ftlbs on the smaller ones. That doesn't seem too detailed to me, which is why I asked the question here after reading on this forum that you still have to torque and then do the service manual specified degree turns on each bolt. Which brings us back to the head gasket. I read, again here on this forum, that if you have a LS1 block and are using LS6 heads you have to get specific headgaskets. Are the GM MLS gaskets the best choice?
Tech Contributor
Joined: Jan 2007
Posts: 19,347
Likes: 1,123
From: Dyer, IN
The instructions just say tighten in 3 equal steps to 75ftlbs on the larger bolts and 22ftlbs on the smaller ones. That doesn't seem too detailed to me, which is why I asked the question here after reading on this forum that you still have to torque and then do the service manual specified degree turns on each bolt.
Tech Contributor
Joined: May 2008
Posts: 2,843
Likes: 16
From: Howell Michigan
St. Jude Donor '09-'10-'11
Pro
Joined: Dec 2003
Posts: 654
Likes: 1
From: chandler az
The stock GM bolts are a newer type (or at least new to me). They are called torque yield bolts, designed to give very accurate clamping torque, but part of the catch is they are also designed to stretch in a predictable manner as well, so they are only good for one use. I have heard of people getting away with resuing them, but it's not something I would try.
Drifting
Joined: Sep 2008
Posts: 1,389
Likes: 3
From: somewhere shooting my assault rifles
ARP website tells you exactly what to torque them to in steps and to use their lube on them for torquing. Maybe im missing something else...Nope pretty detailed if you ask me...
Last edited by Z06supercharged; Sep 15, 2011 at 12:12 PM.
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Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
ok if you call that detailed then ok i guess, I guess I was just expecting a little more. I would just think the heads would be torqued tighter than that.
Tech Contributor
Joined: Jan 2007
Posts: 19,347
Likes: 1,123
From: Dyer, IN
You expected it to be more? What are you basing that from? The first pass on the M11 TTY bolts is 22 ft lbs, then degrees are counted on second and final pass. What is the final torque?
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
I just wanted to verify on the correct head gasket.
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
My 00 LS1 is going to get 243s off of an 01 LS6. I think I can use the GM MLS style but I just wanted to make sure.
Also,
I will be using ARP head bolts. My service manual only talks about an initial torque and then a degree turns on the oem GM bolts. Are the torque values in the ls1howto for the ARP bolts accurate or will the intital torque then degree measurement valid for ARPs as well? The service manual only says to use loc tite or lube on bolts when specified. It doesn't say anything about lube on the headbolts but I have read many times to use it. Do ARP bolts go in dry or use their lube?
Thanks
PS There is nothing new about TTY fasteners, they've been around for many years.
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
Thread Starter
Le Mans Master
Joined: Jun 2008
Posts: 5,284
Likes: 235
From: Rockledge FL
The design calls for the use of TTY fasteners to achieve the desired clamping force. You can either choose to follow the original design or go with the installation procedure from a vendors who's only interest is to sell you some bolts, your choice.
PS There is nothing new about TTY fasteners, they've been around for many years.
PS There is nothing new about TTY fasteners, they've been around for many years.
Drifting
Joined: Jan 2008
Posts: 1,722
Likes: 138
From: Florida
St. Jude Donor '09
yes and i choose to go the same route that millions of other people have used and go with the stronger bolt that i can reuse. the original design also called for a column lock on my steering wheel and rubber grommets in my seat track but i decided to go to a different setup in that too.
Increased bolt strength for this application serves no purposes and does not provide any increased reliability or durability over the OEM design. It's your money, you can choose to waist it if you like.
For increased clamping force required to support the higher firing pressures for high boost applications, GM chose to add an additional two bolts per cyliner on the LSX blocks.
Using column lock failures to to justify purchasing the non OEM bolts is ignorant at best. Good luck with you project.
