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I'm curious what everyone thinks our roadrunner will run with this new combo?

70 rr. 3900#, 440 12.5 to 1 compression B1/brodix heads, 696 roller 850 holly double pumper M-1 intake.5000 stall 4.86 gear.super stock springs 29.5/10.5x15 slicks

hope to get it out in the next week or so and will know for sure.




With your overall gearing the best that you can run is about a 10.60 to 10.80 @ 7300 to 7500+ RPM