ewingr

When installing headers on a LS3, aluminum heads of course, should I use anti-sieze?

elephantrider

iTrader: (2)

i've never used anti-seize on header bolts. ever.

Project GatTagO

iTrader: (7)

But I always do...LOL

Andrew

elephantrider

iTrader: (2)

really ? man, i've taken apart many headers, and a few that have been on the
car for 10's of thousands of miles and have never had an issue.

you just put a tiny dab on there or what..?

Black89Z51

iTrader: (2)

Any time I install a steel bolt into aluminum I use antisieze.

DW SD

The GM OEM black oxide bolts have some yellow paste pre-applied. I believe it is anti-sieze.
I used those new bolts from GM.

If not those, I would use anti-seize with dis-similar metals for sure (or high heat applications). Apply about as much as the volume of one pea to the end of each of the bolts.

Doug

panic

Use the brush applicator, then wipe off enough so there is only a coloring with no thickness. Yes, it's a lubricant and affects the torque spec.

senicalj4579

iTrader: (41)

I use it

Mike52

iTrader: (1)

Many say yes and only one says 'no', you be the judge which is the safe way.
Btw, I use the brush to apply on the threads too.

bczee

iTrader: (12)

As long as 1) high temp heat or 2) Different metals are being use. I will alway use it.

elephantrider

iTrader: (2)

yup, i'm the outlier

upflying

Always use it when installing steel spark plugs into aluminum heads.

ls1nova71

iTrader: (4)

Short answer, yes.

Jimbo1367

How about the long answer.

Header studs w/ antisieze too??????

truckdoug

iTrader: (25)

aint gonna hurt

LLLosingit

iTrader: (4)

I've disassembled to many engines to count and had to many exhaust bolts/studs break off. It's not so hard to remove the broken bolt/stud from an iron head but aluminum is a pain in the *** because it's easier to mess up the threads and then it's even harder to repair. I would certainly use anti seize if it were mine.

ewingr

Turned out to be a hot topic. Thanks, everyone, for the feedback.

I used it, got'em in.

Project GatTagO

iTrader: (7)

On my Cougar I used ARP stainless header studs and I used anti seize on them as well. Anytime that steel or stainless bolts go into aluminum anti seize should be used.

Andrew

Blown06

iTrader: (32)

I always use either antisieze or something arp's bolt lube for stuff going into aluminum that does not require locktight. Probably most important when using stainless, as I've had stainless fasteners gall in both aluminum and stainless more than any regular steel bolts.

joyridin'

iTrader: (1)

I always use anti-seize on the header bolts and a small amount on the spark plug threads.

BTW...be sure you are using the proper type of anti-seize. Some are made for heat, some are not.