LS7 thread sealer needed to water jacket?
02-24-2018, 09:10 PM
#1
Instructor
Thread Starter
LS7 thread sealer needed to water jacket?
I am installing a set of heads on my LS7 and want to confirm that none of the holes are thru to water jacket?
Doesn't seem any of the holes are thru to water jacket when probing with .22 cal brush. I also found a 2006 service manual at brakes-online and none of the holes are marked as thru. If not, then I will use ARP Ultra-Torque with the head bolts, and not the thread sealer.
https://www.bakesonline.com/images/M...epairSpecs.pdf
Thanks for the confirmation.... Second guessing myself and I'll just feel better if somebody else agrees!
Doesn't seem any of the holes are thru to water jacket when probing with .22 cal brush. I also found a 2006 service manual at brakes-online and none of the holes are marked as thru. If not, then I will use ARP Ultra-Torque with the head bolts, and not the thread sealer.
https://www.bakesonline.com/images/M...epairSpecs.pdf
Thanks for the confirmation.... Second guessing myself and I'll just feel better if somebody else agrees!
02-25-2018, 07:57 AM
#7
Team Owner
No need, but you do need to use a thread cleaner, and clean the treads before installing new ones.
02-25-2018, 08:16 AM
#8
Bow-Tie Guy
02-25-2018, 08:29 AM
#9
Team Owner
Exactly. Just break cleaner/compressed air/etc. You will be amazed at the junk that clears out. If you don't clean the threads you risk cracking the block, or not getting proper torque.
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Les-10 (02-25-2018)
02-25-2018, 05:03 PM
#10
Racer
The ls7 head bolt holes are blind. No thread sealer needed.
However, they must be clean and clear of debris and fluid. Failure to clear will, at minimum, lead to false torque readings or, worst, a damaged block
However, they must be clean and clear of debris and fluid. Failure to clear will, at minimum, lead to false torque readings or, worst, a damaged block
Last edited by Craiger77; 02-25-2018 at 05:04 PM.