pauls99z28

iTrader: (32)

Is there any other brand other than cometic that sell .040 thick compressed head gaskets??

This is for a 2002 T/A ws6 Stock bore...

Thanks for any input.

ckpitt55

iTrader: (4)

Try Fel-pro

Burken01

iTrader: (88)

heres those fel pros you were looking at

http://www.summitracing.com/parts/fel-1041

a lot of people run the fel pro version vs the cometics because they are cheaper and with cometics you have to have a very clean surface for them to seal properly... these will seal like the GM ones

pauls99z28

iTrader: (32)

thanks, the link says its for a 4.135 bore... will this work with a stock bore block??

vettenuts

iTrader: (4)

Head chamber will usually dictate the gasket bore. I am running AFR heads with unshrouded intake valves. I am using a 4.160" Cometic. Check the width of you chambers before ordering as you don't want the gasket hanging into the chamber.

pauls99z28

iTrader: (32)

Thanks vettenuts, Well my heads are just AI 226 ported 243's.

DietCoke

iTrader: (18)

Wrong. The cometic MLS are nothing like the solid copper cometics. I've reused mine 3 times now, spray em out with parts cleaner, some orange tack spray, and reinstall. Cometic MLS are the best gaskets made for the ls.

pauls99z28

iTrader: (32)

Thanks for all the response. Just wanted to see what my options were and price differences.

DietCoke

iTrader: (18)

Also, the above poster kind of iterated it, but put plainly, oversize (bore) gaskets are not an issue at all, they will seal just the same.

pauls99z28

iTrader: (32)

Thanks DietCoke, I see you from richmond hill area.. are you a member of any clubs here in the SE Georgia area?

Burken01

iTrader: (88)

Hmm didn't know they had solid copper cometics, ok then the mls cometics were what I used years ago then.. I went overboard on getting the surfaces clean anyway...

Burken01

iTrader: (88)

Out of the box the cometics like a 30 ra or something like that finish to get a good seal... The fel pros can seal at 60 ra and it has a sealer already applied to the gasket.

So I wasn't wrong dietcoke, where did I say copper gaskets anywhere?

DietCoke

iTrader: (18)

It was implied. The cometics seal as good as the felpros do, they also have sealer applied to them. Unlike the felpros, however, you can reuse them numerous times, and all it takes is a thourough cleaning and basic prep of the surface (i like a 3m pad on drill) and some fresh sealer (3m or permatex copper spray)

Anything is going to leak on a shitty surface. @ the OP, try my facebook group. Its a little over 400 strong, we have weekly meets on saturday nights.

https://www.facebook.com/#!/groups/373324966099285/

Burken01

iTrader: (88)

Fel pros will seal on a slightly dirtier surface than cometics will in my experience..

A lot of people install dry per instructions but on mine I had a tiny coolant leak with cometics..

I would copper spray for insurance, even on my ls9 gaskets I'm using copper spray

DietCoke

iTrader: (18)

copper spray is always good.

pauls99z28

iTrader: (32)

Ok just to verify.. I should use copper spray with my head install right?!
this is a stupid question but Do i spray the copper spray on the gaskets? both sides?? or the block deck??

pauls99z28

iTrader: (32)

Also i measured combustion chamber width and it measured 3.970 ish.. So i should go with either the cometic 3.970" gaskets or should i just go to the next level which is 4.060" gaskets??

Thanks for all input.

DietCoke

iTrader: (18)

Get the 4.06 gaskets, light coat of copper spray on both sides of gasket, and install when tacky. Deck should be clean.

pauls99z28

iTrader: (32)

Sweet! Thanks DietCoke!!