Setup sheet

Stagger

How much bigger the right rear tire rolls out than the left rear.

LR Wheel Spacing

Measured left rear spacing. Bigger numbers move the left rear out; 14.0 in is the standard position.

RR Wheel Spacing

Measured right rear spacing. Sets leverage on the loaded corner; 18.5 in is the standard position.

RR Tire

Which of tonight's three game compounds goes on the right rear.

Front Block

Front ride-height block. Smaller block = higher chassis. Bigger block drops the nose and plants it.

Rear Block

Rear ride-height block. Smaller block = higher chassis. 5.50 is a slammed, low-CG rear end.

Wing Angle

How steep the top wing is set on the deck.

Injector Stacks

Stack height shapes where in the rev range the motor makes its power.

Nozzle Config

Which nozzles are feeding the motor. Lower only is the standard package; all 16 feeds the lowers and the upper/longs together and wants materially more fuel.

Lower Nozzles

Lower nozzle size. Smaller is leaner and hotter; bigger is richer and safer.

Ignition Timing

Ignition advance for the feature. More timing is a harder hit and more heat; pulling timing is safer and can drive better on a slick racetrack.

Rear Gear

Final-drive ratio. Numerically lower is taller — lower RPM at a given wheel speed. Numerically higher is deeper — higher RPM and more pickup.

Fuel Load

Methanol in the tank at the green. Fuel is weight — and running out is a crew-chief failure, not bad luck.