2020 NASCAR Whelen All-American Series Rule book will be followed with the exception of:
Engine/Carburetor/Weights:
GM 602 Crate Engine w/390 or 650 cfm + 1″ Tapered Spacer Plate 3,000/1,300
GM 603/ZZ4 Crate Engine w/390 cfm + 1″ Tapered Spacer Plate 3,000/1,300
GM 604 Crate Engine w/500 cfm (Ultra or HBX) + 1” Tapered Spacer Plate 3,050/1,370
Ford JR347 Crate Engine w/390 cfm + 1″ Tapered or Open Spacer Plate 3,025/1,325
GM Built (Straight Plug & Dillon 70cc) w/500 cfm (Ultra or HBX) + 1” Tapered Spacer Plate 3,050/1,370
GM Built (Steelhead) w/450 cfm + 1″ Tapered Spacer Plate 3,050/1,370
GM Upgrade (Spec) w/350 cfm + 350 Adaptor Plate 3,100/1,400 with .75″ 2-hole Non-Tapered Aluminum Spacer Plate – 7000 RPM Limit Set by Track
Ford Built w/450 cfm + 1” Tapered Spacer Plate 3,050/1,370
Harrington Enforcer w/450 cfm + 350 Adaptor Plate 3,100/1,400 with .75″ 2-hole Non-Tapered Aluminum Spacer Plate – 7000 RPM Limit Set by Track
Ford SR347 (2019 upgrade) w/450 cfm + 350 Adaptor Plate 3,100/1,400 – 7000 RPM Limit Set by Track
Ford SR347 (w/o upgrade) w/450 cfm + 350 Adaptor Plate 3,075/1,375 with .75″ 2-hole Non-Tapered Aluminum Spacer Plate – 7000 RPM Limit Set by Track
Tire Options:
To Be Announced.