[68NovaSS]

First of all, a motor's c.r. is relative to the sum of it's internal parts, piston type, dish, dome, and they're volume, cylinder hear chamber volume, etc., just because it's a 327 doesn't necessarily mean it has high compression. Do you have any history on this motor? Numbers off the front block pad, what GM heads, and so on? Has it ever been rebuilt?

BTW, camel hump heads are a stock GM head for some motors.

Here's another TR example on my T-Bucket with two 600's, it's a BB, with lots of cam and makes big power right off idle.