NHRA Accepted Products Table of Contents - NHRA.com

NHRA Accepted ProductsVI. FOR CLASSES LIMITED TO TWO ONLY SINGLE OR TWO BARREL DOWNDRAFT CARBURETORS:Applicable Class: SS/VXPart Primary Primary Secondary SecondaryManufacturer Number Throttle Bore Venturi Throttle Bore Venturi Applicable NotesKadron Any 2.047" 1.732" * 2.047" 1.732" *Weber Any 2.047" 1.732" * 2.047" 1.732" *Dellortoro Any 2.047" 1.732" * 2.047" 1.732" *Empi Any 2.047" 1.732" * 2.047" 1.732" *1. * = All venturi dimensions are maximum, there isno allowance/tolerance.2. Throttle shafts and plates must remain asproduced.3. For all carburetors used in these classesmodifications are limited to removing the air horn,choke plate, shaft, and operating mechanism;replacing boosters, jets, needles and seats,accelerator pumps, and squirters; replacing ormodifying float assemblies, baffles, and meteringrods; resizing existing fuel and air bleed passages;drilling idle holes in the primary throttle plates; andpolishing any surfaces. The original bodies, baseplates, float bowls, and metering blocks arerequired.Page 119 1/14/2014