Not a 347... but my best time on the motor/NA is 11.64@116... w/a 200 shot 10.32@131... hyd roller cam, stock block 306... rest of my specs are in the " - 93LX - " link in sig...
What was your 60ft. time on the 11.9 pass? Your MPH indicates you should be a little quicker... maybe 11.60-11.70...
How much spray you plan on adding to the equation?
