need help understanding scr and dcr and with what fuel

Old 10-09-2007, 02:57 PM
  #1  
swany388
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Default need help understanding scr and dcr and with what fuel

I am building a 509 bbc for truck pulls. I have 14 to 1 static comp. now.
How high can I go with the dynamic comp with say a 114 octane ( say Sonoco HCR Plus). Also at what piont will the dynamic get to high. I am trying to gian as much torque as I can in this motor. The block is a Dart Big M and I have the heads set up with the extra lifter valley bolts to help with any extra pressure that a higher dynamic comp. could cause.
Thanks Swany
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Old 10-10-2007, 05:23 PM
  #2  
badrad
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I'm no expert but I understand that a full tilt race engine wants DC ratios of 9.5-10:1.
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