AARA Sportsman 602 Engine Rules

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AARA Sportsman 602 Engine Rules

A.A.RA. GM 602 Crate Engine

Engine Specs and Requirements - The engine that will be approved for competition with AARA will be the GM P/N 88958602 GMR 350/350 Circle track Engine.

The engines will be purchased directly from AARA and sealed with the associations seals prior to delivery to owner. All factory engine seals will remain intact and un tampered with, the exception being the addition of AARA’s sealing devices. Any service work requiring the removal of seals or seal bolts must be scheduled with and approved by AARA. Tampering with seals will result in severe penalties and loss of eligibility of engine to compete in the AARA Sportsman Division.

602 GM Crate Engines will be allowed to be re-built at AARA approved service centers only. At this time AARA approved service center is Mittler Bros. Machine.

Engine will be delivered with distributor and serial numbered spec two (2) inch spacer plate.

All engines will have serial numbers stamped on them and all AARA seals will be numbered and recorded for each engine.

All cars will weigh 2800 min. with driver at conclusion of race.

Carburetors - Holley 650 4 bbl P/N 0-80541
Must fit AARA gauges. Boosters, Venturi area, Base Plate, Butterflies, or Throttle Shaft ay not be altered in any manner with the exception of a hole may be drilled in butterflies to improve idling. Alterations to allow additional air to be picked up below venturi will not be allowed. I.E. altered gaskets, base plates or drilling holes into carb. Carb. Spacer is TRD-2432 furnished with engine.

Replaceable Engine Parts

VALVE SPRINGS - The only approved valve springs for the GM Performance Factory Sealer Circle Track Crate Engine (GM Part Number 88958602) are factory OEM GM Part Number 10212811 springs or Comp Cams P/N 981-16 Additional valve springs devices of any kind are not permitted.

PUSH RODS - The only approved Push Rods for the GM Performance Factory Sealer Circle Track Crate Engine (GM Part Number 88958602) are the factory OEM GM Part Number 14095256. Any alteration of any kind to factory OEM GM Part Number 14095256 Push Rods is not permitted. The addition of guide plates or any other Push Rod devices of any kind are not permitted.

ROCKER ARMS - The only approved rocker arms for the GM Performance Factory Sealer Circle Track Crate Engine (GM Part Number 88958602) are factory OEM GM Part Number 10089648 Rocker Arm or Crane P/N 11800-16 with a 1.5 ratio. Additional rocker arm devices of any kind are not permitted. Additional oiling devices of any kind are not permitted.

ROCKER ARM NUTS - The only approved rocker arm nuts for the GM Performance Factory Sealer Circle Track Crate Engine (GM Part Number 88958602) is the factory OEM KOOL NUT KIT GM Part Number 25534352 or Crane P/N 99 768-16. Additional Rocker Arm Stud support or strengthening devices of any kind are not permitted.

HARMONIC BALANCER - The Harmonic Balancer must be factory OEM GM Part Number 12555879. Alterations of any kind to the factory OEM GM Part Number 12555879 Harmonic Balancer are not permitted.

All other Sportsman rules remain in effect.

The cost of the engine, subject to manufacturers price increase, is $3,510.00. This includes carb. spacer and sealing of engine. Contact Don Hoener @ 636-288-2716 to order your engine.
 




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