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Old 10-29-2012, 02:33 AM
cdminter59 cdminter59 is offline
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Engine sbc combination

Don, I checked on Comp Cams website where they have CamQuest a camshaft selection software with dyno results. I used United Engine & Machine (Keith Black) COMPRESSION RATIO CALCULATOR Static and Dynamic Compression Ratio
(Considers Cam Timing and Rod Ratio). I used the 75cc chamber from the AFR 195 heads and SRP flattop pistons with a piston head volume of +5. (#1) 299THR7 PN 12-602-8, 2500-6200, .569/.554 lift, 243/257 duration @ .050, LSA 107, ICL 102, CR 9.895, DCR 8.341, 359hp@5500 rpms, 369 lbs torque@4500 rpms. (#2) 12-443-8 XR294HR, 2800-6100, .540/.562 lift, 242/248 duration @ .050, LSA 110, ICL 106, CR 9.895, DCR 8.118, 390hp@5500 rpms, 413 lbs torque @ 4000 rpms. (#3) 12-433-8 XR288HR, 2500-6000, .520/.540 lift, 236/242 duration@ .050, LSA 110 ICL 106, CR 9.895, DCR 8.287, 394hp@5500 rpms, 426 lbs torque @ 4000 rpms. Send the thumpr back and swap for 12-433-8 XR288HR.
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