Build suggestions for 340?
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Rusty says he likes the Lunati 10200703 which is
268/276/110/52*overlap/120 comp/110 power, Ica of 60*
I like it too, except I might put it in straight up/no advance to trade away 2* of compression to get 2* of power extraction, and that would run at 10.0Scr on pumpgas,barely.
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So thanks, Rusty, for that cam recommendation - I think it does a good job of fitting my realistic parameters!
AJ - I got the spec from Lunati about that cam, and based on that, I attempted to fill out the formula, and here's what I entered and what it calculated:
Number of Cylinders : 8
Bore in Inches : 4.08
Stroke in Inches : 3.31
Rod Length in Inches : 6.123
Static Compression Ratio : 10 :1
Inlet Valve Closes ABDC : 39°
Boost Pressure in PSI : 0
Target Altitude : 800 (Feet)
Results:
Static compression ratio of 10:1.
Effective stroke is 3.03 inches.
Your dynamic compression ratio is 9.24:1 .
Your dynamic cranking pressure is 192.80 PSI.
Your effective boost compression ratio, reflecting static c.r., cam timing, altitude, and boost of 0 PSI is 9.08 :1.
V/P (Volume to Pressure Index) is 183
Either there is something off in my input, or this is an outstanding cam. Please correct me if I've entered something incorrectly...
-Jim