I used the web site that is linked from here in the advanced CR tech article. writtten by Michael Delaney, which I find all of his articles very informative and in-depth.
I know the mm to in conversion is not 100% but this is what I got
Camshaft, Rod Length, Boost and Altitude Correction to Compression
Your engine summary is as follows: Bore 3.15 inches,(81.55mm) stroke 3.45 inches,(87.2mm) rod c-c length 5.430 inches, with a static compression ratio of 11.5 :1. Your camshaft specifications call for an inlet valve closing of 46.0 degrees ABDC (after bottom dead center).
Your chamber volume is 41.96 cc's. With this camshaft your dynamic, or effective stroke is 3.07 inches. Your dynamic compression ratio is 10.28 :1 corrected for cam timing, altitude, and rod length. Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 219.22 PSI. Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and 0 PSI is 10.28 :1.
Knowledge is power.
I have had the same rod lenght and stroke I just got oversized pistons +.020. I don't know if this is efficent or not. Any input would be great. it seems like it would be decent to me at least with the stroke not being effective .38in of the stroke. Which is to be expected with a stage 3 cam. Not to mention this can all be changed to a certian amount with adj. cam. gears. Right????
I know the mm to in conversion is not 100% but this is what I got
Camshaft, Rod Length, Boost and Altitude Correction to Compression
Your engine summary is as follows: Bore 3.15 inches,(81.55mm) stroke 3.45 inches,(87.2mm) rod c-c length 5.430 inches, with a static compression ratio of 11.5 :1. Your camshaft specifications call for an inlet valve closing of 46.0 degrees ABDC (after bottom dead center).
Your chamber volume is 41.96 cc's. With this camshaft your dynamic, or effective stroke is 3.07 inches. Your dynamic compression ratio is 10.28 :1 corrected for cam timing, altitude, and rod length. Your dynamic cranking pressure, corrected for cam timing, rod length and altitude is 219.22 PSI. Your dynamic boost compression ratio, reflecting static c.r., cam timing, altitude, and 0 PSI is 10.28 :1.
Knowledge is power.
I have had the same rod lenght and stroke I just got oversized pistons +.020. I don't know if this is efficent or not. Any input would be great. it seems like it would be decent to me at least with the stroke not being effective .38in of the stroke. Which is to be expected with a stage 3 cam. Not to mention this can all be changed to a certian amount with adj. cam. gears. Right????