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Below are changes and additions to the 2015 USAC Sprint Car rules. Red text indicates this has been removed, Black text indicates this has been added.
302-E.
No tolerance allowed on engine and driveline offset, must be on chassis centerline engine must be mounted straight up in vertical position (no tilt left or right)
303-J.
Right side cockpit panels must have a minimum opening of one hundred (100) Square inches. Panels that restrict driver's vision at the discretion of USAC officials will not be permitted.
Right side cockpit panels may be a maximum of forty (40) inches high at the rear and a maximum of thirty-eight (38) inches high at the front as measured from the bottom of main frame tube at the engine plate and projected rearward twenty-one (21) inches with a minimum six (6) inches vertical opening from the afore mentioned point forward, including side visor.
303-Q.
Side visors on roll cage will be limited to eight (8) inches tall. Visors that restrict driver's vision at the discretion of USAC officials will not be permitted.
308-H.
Electronically controlled tire pressure bleeders will be allowed. Electronic bleeders may not be capable of being controlled or adjusted remotely.
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