I picked up .1 in the 1/8 going from 30 to 28. was on a 469 race engine. ended up 6.49 at 3500 lbs. even on the 517 set them to 30, went 6.26. heads are gone, temporarily have 340 butler edelbrocks i need to sell for some wedge heads.
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Illinois Outlaw Gassers
6.27@107
9.97@131
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