CNS is pleased to anounce that the superstock division will be allowed to run the 602 crate engine for 2012. Infomation and data from the CNS web site polling, track officials and management, have made this decision. The 602 engine is in addtion to current engines from 2011 season. Good luck in 2012.
The 602 crate engine may not run Exhaust Headers.
The 602 Crate engine will run a 2 Barrel Carburetor and adapter, Please refer to rule attachment below.
Please do not hesitate to email or call if you need any more information.
12 – CARBURETOR:
12-1 Stock Holly #R4412 2-bl 500 cfm is the only legal Carburetor and must meet Holley specifications.
12-2 Mandatory Adapter Kit – Unaltered Moroso part #64966. Only one spacer will be allowed between the intake and carburetor. Carburetor spacer must be used as manufactured with no alterations.
12-3 No polishing, grinding, or drilling (i.e. Metering block) of holes allowed.
12-4 Choke, blade, and rod may be removed.
12-5 Size and shape of boosters must not be altered.
12-6 Booster height must remain stock.
12-7 Jets of any size may be used.
12-8 Venturi area must not be altered in any way.
12-9 Casting ring must remain completely visible and may not be removed.
12-10 Base plate must not be altered in size or shape.
12-11 No holes may be drilled in the base plate.
12-12 Stock butterflies must not be thinned or tapered.
12-13 Screw ends may be cut even with the shaft, but screw heads must remain stock.
12-14 Throttle shaft must remain standard and must not be thinned, cut or nicked in any matter.
12-15 Maximum gasket thickness shall be .065.
12-16 Only one round dry type paper air filter element a maximum of 14” diameter by 3” tall is permitted.
No treating or soaking.
12-17 No electric fuel pumps allowed.
12-18 Only open type sandwich style air cleaners are allowed with a maximum diameter of 14”. Offset air cleaners are approved for distributor clearance only. No cool air boxes allowed or forced air induction. No air deflecting or attachments of any kind are allowed to be attached to the air cleaner top, bottom or filter. Any modifications to the air cleaner assembly or filter must be approved prior to use in competition.
12-19 Stock OEM fuel injection is allowed on V-6 cars.
12-20 Electric fuel pumps are allowed only on V-6 fuel injected engines.
11 – EXHAUST:
11-1 Stock cast iron with no modifications, as provided on engine. No center dump styles allowed.
11-2 Exhaust must terminate behind driver. Two (2 inch) pipes allowed. 2 into 1 pipes may be used provided the primary pipe does not exceed 2” O.D and the pipe after the merge does not exceed 2 ½”.
11-3 Mufflers are not required but, the 95 DBA rule will be strictly enforced.