Lawhead

iTrader: (14)

Well as some of you know I'm about to get my short block for my car within the next couple weeks and going with an 11:! compression piston.

I've heard about head gaskets but want to know how much each one could up my compression a lil bit because Ive heard its safe to run up wards near to 12.5:1 compression on pump gas with these things.

Hear about Shim gaskets here lately from a buddy and was wondering what would be a good choice on that

RamAir95TA

iTrader: (2)

Shim gaskets when used properly are a good way of increasing your compression, but IMO for a street daily-driven motor there isn't much benefit. For a DD I'd probably stick to a 12.0:1 instead of 12.5:1, just to be on the safe side.

bowtienut

iTrader: (1)

I agree it's better to limit to 12:1 CR for a DD. However, I wouldn't even go that high unless the block was decked or a shim gasket used to bring the quench down to about .035".
Each .010 decrease in gasket thickness will bring the CR up by about 0.25

sweetbmxrider

iTrader: (13)

You should let the builder build the motor and recommend the parts to attain proper quench, etc.