Notmyvette

iTrader: (1)

What sealer does everyone use on the LS1 head bolts? Do they all go in a water jacket? Which ones need the sealant?
Thanks

bigboykilroy

iTrader: (48)

LS1 Head bolts do not require sealant.

5.3LJimmy

iTrader: (10)

All of the LS1 head bolts are blind tapped. Make sure you blow any water/oil out of the bolt holes before bolting the heads on because it will crack the block.

Notmyvette

iTrader: (1)

My bad, I was thinking about the head bolts on my stang then......

and yeah I blew everything out....I stripped the block bare, cleaned in every hole with a steam cleaner (HOT pressure washer) and blew out with compressed air.

BlackScreaminMachine

iTrader: (17)

Dont feel bad LT1 motors used sealant too, I used Black RTV with great success but like said, blind holes, completely clean them out, double check if needed.

Notmyvette

iTrader: (1)

So dies it need anything on the bolts? Just confused me cuz new head bolts come with sealer on the bolt threads.....Antiseize since theyre aluminum threads? oil or something?

BlackScreaminMachine

iTrader: (17)

Some bolts come with Antiseeze or some thin lube if be it from ARP to ensure a proper TQ rating when using a TQ wrench. What people are talking about is fluid from coolant or debris from gasket that doesnt really compress and since there is no room to go, the block cracks.

You do not need any RTV goop.

vettenuts

iTrader: (4)

If they are stock GM bolts, they are tightened to a specific rotation angle and therefore are installed without any lube or sealant.

Bill Bowling

iTrader: (6)

ARP's are the way to go. You can use them over again. Stock bolts one time. ARP does use oil or ARP lube.

Bill

Notmyvette

iTrader: (1)

Well I don't plan on tearing it down anytime soon or ever want to touch this thing again once it's all together. If it was mine I would ARP everything like I did to my forged 408 stroker for the stang but it's a friends soooo I'm using stock bolts.

bigboykilroy

iTrader: (48)

ARP that bitch, she will like it.

blazin

iTrader: (16)

So none of the ls series go into a water jacket I'm working on a 6.0 iron block?

blazin

iTrader: (16)

So all the ls series holes are blind tapped I'm working on a 02 iron 6.0

5.3LJimmy

iTrader: (10)

Yes the iron blocks are also blind tapped.

jonlisa973

iTrader: (17)

make sure you use the proper torque on the arps. They stockers are torque to yield bolts.

Viper

iTrader: (6)

Just to throw this out there. Sometime if heads are ported you do need sealant on the rocker bolts as they can protrude. You can also cut them so they don't protrude.

JFM-jr

iTrader: (23)

These guys are referring to the head to block bolts. You are speaking of the rocker arm bolts. LS2 GM bolts call for 22 foot lbs then turn 90 degrees and an additional 70 degrees in sequence. Not sure if some of the early LS1's with the staggered bolt lengths use these figures tho. If using the torque angle method be sure to mark a line on all the bolts after torque values are reached. This allows visual tracking of what bolts you did and did not rotate.

Viper

iTrader: (6)

I know, I was pointing out the rocker arm bolts sometimes need sealant.