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who makes the thickest head gaskets?

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Old Jun 13, 2006 | 10:32 AM
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Default who makes the thickest head gaskets?

Just bought a new 408 but was intended for use with 72cc heads with comp ratio at 13.5:1 but I have allpros with 62cc dome on pistons is 10.2cc and realize this is a race gas engine but trying to keep it within reasonable limits without making it diesel. thickest Ive seen is .074 cometecs but I didnt see if that was a compressed thickness or not. Any input is appreciated or if some one is looking for head / parts trading let me know thanks, Mason
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Old Jun 13, 2006 | 11:32 AM
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Ive heard & read that you may find knock worse with a thicker gasket as you lose quench.
You are probably better off doing the head swap you discuss and keep quench tight, somewhere around 0.040
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Old Jun 13, 2006 | 11:48 AM
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thanks for the reply I have gone on diamonds site and with 62cc heads it is around 14.75:1 how many ls1's are out there running that high and what fuel are they running minimum with no problems and a good tune?
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Old Jun 13, 2006 | 11:59 AM
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What is your DCR?
But that is definately Radicalismo, you might want to consider Meth injection too.
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Old Jun 13, 2006 | 12:00 PM
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Originally Posted by 97F1R408
Just bought a new 408 but was intended for use with 72cc heads with comp ratio at 13.5:1 but I have allpros with 62cc dome on pistons is 10.2cc and realize this is a race gas engine but trying to keep it within reasonable limits without making it diesel. thickest Ive seen is .074 cometecs but I didnt see if that was a compressed thickness or not. Any input is appreciated or if some one is looking for head / parts trading let me know thanks, Mason
Your issue is going to be the dome clearance problems... if the dome was not made for the same combustion chamber you are running a gasket will be the least of your worries, the piston hitting the chamber of the heads will be.

Bret
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Old Jun 13, 2006 | 01:15 PM
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I take it this is the 408 that Only 231 was selling? If so, I was looking at buying that block but you beat me to it. I had plans on ditching the domed pistons for flat tops. Might be something worth looking into.
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Old Jun 13, 2006 | 03:34 PM
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Originally Posted by King James
I take it this is the 408 that Only 231 was selling? If so, I was looking at buying that block but you beat me to it. I had plans on ditching the domed pistons for flat tops. Might be something worth looking into.
Yes its the same short block I guess I got it cheap enough to swap out pistons and have rebalanced or maybe they could make me a set that are the same weight ?
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Old Jun 13, 2006 | 10:46 PM
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you could also try and have your chambers expanded on your heads, there are a few places that do that i believe.
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