Which base gasket??

[mattdedes]

I just installed my ADA head (175lbs.) in my 97 SPX and measured my squish. I got: MAG .040 and PTO .044 Is it okay for the the numbers to be that different? Which base gasket would you recommend I use? Thanks.

[SHOOTER]

Re: Which base gasket??

Is this with a base gasket or without one?
SHOOTER

[mattdedes]

Re: Which base gasket??

with, 4 hole

[SHOOTER]

Re: Which base gasket??

May need to go to a 5 or 6 hole to get your squish up in a good range for pump fuel. With that tight of a squish, I'd definately run race fuel. Once you get your squish around .055 to .060, check your compression. Then ada can cut your domes to match the compression you need.
SHOOTER