Ported 452 or Edelbrock RPM
Well I don't really see reaching 0.045" with current engine configuration. With thin head gasket I think reaching 0.055" can be a challenge. Also at 0.045" I am looking at 11.5:1 compression. I will measure it all but still it seems out of reach. Where I live the only options from pump are 95, 98 and 100 octane so this is not really a problem for me.
What is the thinnest head gasket I can get? 0.025"?
Can I use steel head gasket with aluminum heads? Like Mr Gasket 1135G?
I would search but recently, I think .029" is what is available, I still don't get why exactly Mopar ditched the .017" coated embossed shim gaskets. They worked perfectly
for a bunch of builds, but they're gone now, so the Mr. Gasket would be it. An MLS gasket would be best, but I think that is the .029" at best. I sprayed a copper coat on
the shim gaskets when I used them, I haven't used them on an Al head yet, but I would coat them for sure to help ease expansion movement. You may be able to run
that @.053"
if those pistons are forged, they will expand more than cast slugs & close that up a bit more when things heat up. First You must have an EXACT measure
of the deck height, then proceed. If You can get an acceptable squish, I wouldn't worry if the squeeze creeps up a tad, the increase in burn rate should make it moot.
More importantly, enlighten Me on the rating method for octane there vs here in the States. Our RON+MON/2 ratings We're familiar with, not so much Your neck of the
woods!!
