Koots

I know a few people running thicker HG's in turbo diesel applications, which see way more cylinder pressures than the average gasoline engine. So, to me, it's the simplest option, plus it allows you to install headstuds or new head bolts, rework the valvetrain and/or a variety of maintenance things to ensure long-term reliability.

custm2500

iTrader: (10)

$500 to have the chambers cleaned and opened up around the valves. All good stuff but not cheap.

I have tried to contact Dimond about them re profiling the pistons and I have called after hours and during lunch the three times I called.

Someone joked about stacking gaskets sounded sketchy to me but they are layers already. The no answer sponsor and Livernois recommended .060 is the biggest. Do you guys agree? .051 to .060 is about 12.5 to 12.2(maybe 12.1) so if I could get a gasket at .065 or .070 then it would be solidly in the 11s and pump gas comfortable.

Livernois, maybe they aren't listed here on PT but they are on LS1tech

AKlowriderZ71

iTrader: (22)

Most domed pistons have enough material on the dome for milling. Most machine shops are capable of doing this job, and it shouldn't cost much. IMHO, that's the best route to take in this instance.

custm2500

iTrader: (10)

I don't need the compression drop I planned to run as is. I am selling the engine so I wanted to have options for the purchaser if they wanted lower compression.

03sierraslt

iTrader: (22)

Tech and PT sponsors are seperate.

custm2500

iTrader: (10)

Well I can give props to a sudo sponsor or **** on a sponsor for not having an answer. I would rather do what I did. I was truly let down but this company and there lack of information.

Koots

Cometic is the company for MLS headgaskets of varying thickness. You can get them all the way up to 0.140" thick. They get expensive when you buy 0.056" and thicker though.

custm2500

iTrader: (10)

I not sure why I didn't go to cometic already. They have a gasket that is .066 and that would bring it below 11.9:1 perfect for anyone running pump gas.

Thanks for stating the obvious koots. I went from the advice at both shops of staying .060 or thinner. But for anyone who is concerned they can get a bit more comfort with an extra 6 ten thousandths.

BlackGMC

iTrader: (31)

That much head gasket is probably going to cause issues with the quench, probably why no one mentioned it before.

BlackGMC

iTrader: (31)

Also 12:1 is not perfect for pump gas, tuning it would suck.