anyone got any idea where to start on gearing.I run a pro2 with bsr capped specs, 10.5 pro gtb system ,concrete tri oval 396 ft center line.just lookin for a good starting point.what spur and what pinion? also i run in the 8sec breakout class.

For an 8 second breakout I would have no clue.

For your best lap times maybe 4.10 to 4.20 depending on track shape.