Details
327 standard
Vortec heads
4-speed
29" tire
3.73 gear
9.1:1
L-79 cam
55 210- probably 3400lbs.
.040 quench

Looking to install:
Comp Xtreme Solid .230/.236 488/510
Edlebrock RPM air gap

(I have modified the head for larger springs and are setup to accept .525 lift)

Concerns: compression too low to run cam. Do I need go deaper in the gear?

Your turn- is my 'concern' concerning you too?  

Duration is a bit long for a 9.1:1 comp ratio. Makes for a soggy bottom end. Look for an intake closing point around 48-54deg. ABDC, and a dur.@.050 of 215-225, would work well on the street. When I do the math, the cam you mentioned would need at least 10.5:1 comp ratio to work well. I know it's expensive but a roller cam will give you all the lift you want, and keep dur.@.050 in check. Are you planning on spinning high rpm's that you would use a mechanical cam?  

I noticed in another post you mentioned having the correct quench. How right you are, as this important factor is usually overlooked. .038-.040 is prime. Unless a block has been zero-decked, you would need the steel shim gasket to keep quench correct.  

JW... thanks for the reply... I thought the 230 would be too big... I do have another question to bounce off of you...

I've never CC'd a stock Chevrolet piston, do you have any idea what a 327 GM std piston would CC at?

My other figures look like this .025 deck height, 64cc chambers, .015 steel Fel Pro gasket 4.060 gasket bore, so I assumed around 9.1-9.2:1... If you knew the cc's of a stock 4 eye brow piston, I would be for sure how much compression I'm at.  I was figuring 7-8cc's.

Yes, it's kind of a hot street setup... turn about 6,000-6,200.  

I do not know the piston volume. I would have to guess that -7, -8cc's would be in the ball park. Spinning those high rpm's will require at least 230-236dur.@.050 and some good valve springs. If your going to spin it that high, maybe low and mid range torque is not a concern.  

No need to worry about the cam he mentioned because it does not exist. There is no solid roller Comp Cam with 230° @.050 with only .488" lift.  

I think he is looking at the Xtreme Energy 268 solid. It is a flat tappet not a roller.  

[deleted at the request of the author]