11-10-2002, 08:28 AM
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CC Member
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Join Date: Nov 2001
Cobra Make, Engine: Contemporary, 427 EFI; CAV GT40, 427W
Posts: 248
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Not Ranked
I also made one similar to my final setup. I will be track running the car and wanted longevity at high power, etc. I elected to go with the Dart block, SCAT 4340 crank and rods, and JE forged pistons with internal ballance. Anyway the dart block lets you go up to 4.185" bore. I elected to use a 4.125 bore and 4" stroke producing 427 CI. Note this would be a better combination (at 427 CI) then the 4.030" x 4.17" combo. I also added a 825 CFM Demon Carb.
This produced HP = 575 at 6000, TQ = 548 at 4500. Basically you get the torque of your original combo down low and the significantly improved power in the higher RPM (above ~4000).
Here is the file (RENAME ZIP to DYN).
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