RamAir95TA

iTrader: (2)

Detonation is a function of octane fuel and dynamic compression ratio, not the static compression ratio. While the static does partly affect the DCR, it doesn't incorporate valve events from the camshaft.

Short version - don't worry about it. I'm running a zero-decked block, -5cc flat-tops, .028" gaskets, and a 53cc chamber on a mail-order tune with no detonation. My SCR is up around 12.5:1 and my DCR is around 9.5:1.

Still doesn't make sense? http://www.empirenet.com/pkelley2/DynamicCR.html and http://www.hotrod.com/pitstop/hrdp_0...ion/index.html

SS MPSTR

iTrader: (1)

Ditto. Mine is very close to this as well with no detonation.

old93camaro

iTrader: (8)

so you think i will be good with a .040 MLS gasket if so i'll change my order from jegs tonight when i get home

duh

iTrader: (16)

Personally I think you'll be fine with the .040 MLS Cometics....infact that's the same gasket I going to be using in my 408/blower build.....now granted I plan on having crazy valve timing and a bunch less SCR, but either way I'm going to use them.....even if I change my mind and stay NA. They're good gaskets and readily available, unlike the thicker ones.....

SS MPSTR

iTrader: (1)

Tighten the quench - you'll improve combustion and efficiency.

RamAir95TA

iTrader: (2)

This.

old93camaro

iTrader: (8)

thinks for the help im a old SBC Lt1 is not new but as far as CR DR SR man you get a headache trying to please one of them lol thanks for the help guys im going with the .040 ill trust you on this one.

old93camaro

iTrader: (8)

its mid month and still no damn head gaskets..just sitting here looking at what could be in my car..lol cosmetic must had to find the materials to make it

SS MPSTR

iTrader: (1)

You mean Cometic? I get mine within a week from them. Wonder what the delay is?

old93camaro

iTrader: (8)

yea Cometic, yea they say they will ship on the 19th of march but damn i ordered them on the 1st.. i should call they but damn ill hate to take them away from working lol