Beater 2316, Deck height vs. CR Options

[groot]

So, finally getting around to building a "beater" engine to develop my race car project (been idle too long). The idea is to build a reliable, decent engine that's not crazy expensive to sort out my car, then put in the expensive engine when the chassis is ready. I will only use race fuel with this engine.

Basic specs are:

• 96mm JE pistons
• AA Biral cylinders
• 80mm crank, chevy
• 5.4" Chevy rods
• 2.0L heads (Hoffman prepped) 51.3 cc
• 163/86B cam

So, to get ~0.040" deck height, I'll need 0.210" barrels shims (checked this today), but that puts me at a calculated CR of 10.7:1

Now, the question... should I source 0.220" or larger shims to drop the CR at the expense of deck height? A shim of 0.220" will drop the CR to 10.4:1, but raises the deck height to 0.050"

Thoughts?