batboy

iTrader: (6)

Last time I swapped heads on my LS1, I used GM MLS .051" head gaskets. They worked great. This time around I'm wanting a little thinner for a slight bump in CR. I've heard good and bad things about Cometic. Starting to hear about several Cometic failures. Sounds like they require additional prep to seal properly. Regardless, think I'll pass on them. Anyone running Trick Flow MLS .045" head gaskets? I'm tempted to give them a try.

chrs1313

iTrader: (24)

going with cometics over here...fresh milled heads

batboy

iTrader: (6)

Found this in another thread. Guess there aren't many running Trick Flow head gaskets yet.

batboy

iTrader: (6)

This was posted in my thread over at another forum.

slowride

iTrader: (3)

Nothing wrong with Cometic gaskets. Just make sure heads and block are smooth (low surface finish number (RA). I'd use a little copper spray with them also.

batboy

iTrader: (6)

For peace of mind, I've decided to mill the heads a little and just use the trusted GM gaskets instead.

slowride

iTrader: (3)

That works, but the quench doesn't improve that way. I'm sure it's won't be a big issue, but something to think about when going all out.

batboy

iTrader: (6)

Good point.

chrs1313

iTrader: (24)

*****...just kidding i am sure my .040s will leak now haha