SS/AS just a few curious questions

[Jeff Lee]

I've never looked at the modified classes but was reading through my 2009 printed copy of the rulebook and took a peak.
For SS/AS I see most of the engines are in the 390 inch range. Are these small blocks or big blocks? What is a "typical" GM / Mopar or Ford SS/AS engine like? Compression, bore / stroke, rods, blocks, etc. What about the heads, what is common and what kind of flow is typical. I assume it's pretty big bucks with aftermarket blocks to start with.
SS/BS and SS/CS seems to be equivalent just with small blocks with 750's. Right?

Just curious...