.055" MLS Head Gaskets

crashtech · **Joined:** Sun Mar 01, 2009 12:09 am **Posts:** 568

My new setup ended up with the pistons a bit out of the hole, so I need some new head gaskets. Cometic, or ???

Bill? Anyone?

oldsfab · **Joined:** Tue Feb 10, 2009 4:39 pm **Posts:** 423

I have some that are either .055" or .060" they are Cometics, new in package. $140 shipped.

crashtech · **Joined:** Sun Mar 01, 2009 12:09 am **Posts:** 568

OK, is there a way to tell what the exact compressed thickness will be? Does it say what they are on the package?

oldsfab · **Joined:** Tue Feb 10, 2009 4:39 pm **Posts:** 423

crashtech wrote:

OK, is there a way to tell what the exact compressed thickness will be? Does it say what they are on the package?

I guess I should have checked the back :oops:

The back of the package says .060"

Before I saw the writing on the back, I measured with a caliper (not exact because the raised portions won't completely compress) and got less than .060", like ~.054", thus my .055"-.060" figure.

Brian Trick · **Joined:** Tue Feb 09, 2010 7:39 am **Posts:** 52

I would try & find a Cometic that will work.I know you can get Detroits in the thickers,but I'm not too impressed with those.
Was your block cut down more than you thought?

crashtech · **Joined:** Sun Mar 01, 2009 12:09 am **Posts:** 568

With old TRW forgings and stock rods, the block was decked so that they were .010" in the hole. I have forgotten how much was removed. With CAT rods, JE pistons, and a crank turn, they are now averaging .019" out of the hole. The JE's are supposed to be .010" higher than the TRWs, but there is .029" to account for here. Not sure what happened, there may be an intake fit problem now as well.

BTW, oldsfab, you have a PM!

Brian Trick · **Joined:** Tue Feb 09, 2010 7:39 am **Posts:** 52

Can you pull the piston back out & mill some off the tops?Either that,or switch blocks.

crashtech · **Joined:** Sun Mar 01, 2009 12:09 am **Posts:** 568

I'm just a poor boy, so I am going to buy the .060 gaskets from oldsfab, and worry about the intake later. There's no way I want to give up on this fully prepped block now.

crashtech · **Joined:** Sun Mar 01, 2009 12:09 am **Posts:** 568

Thanks oldsfab!

Just so everyone will know, these gaskets came in a very timely fashion, and were extremely well packed! I'm thrilled!

oldsfab · **Joined:** Tue Feb 10, 2009 4:39 pm **Posts:** 423

I bet you never got lumber with head gaskets before

I got my packing skills from A442DUDE

Glad they came in good.

High Performance Olds

.055" MLS Head Gaskets

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