All things
powerboat racing...

Primary tabs

Competition Jet

The Comp Jet (CJ) class has quickly become a very popular Inboard Endurance choice.  Virtually any hull up to 24 feet long with two stringers may run in the class. 

Powered by a U.S. built automotive or light truck engine and a single jet drive used for marine applications only. The engine is to be located forward of the jet drive, and the driver must be seated forward of the engine. This is a great way to get into the thrilling world of Inboard Endurance racing.

Endurance Boat Racing
Requirements
Minimum Age: 
18 years old
Engine: 
U.S. built automotive or light truck engine, Chevrolet big block, maximum 515 cu. in. Cast iron cylinder block; aluminum heads are optional. Naturally aspirated, any form of carburetion or fuel injection is allowed
Speed: 
70 - 90 MPH
Hull: 
Any up to 24' long, with 2 stringers
Propulsion: 
Naturally aspirated, any form of carburetion or fuel injection is allowed
Engine Block: 
Chevrolet big block, maximum 515 cubic inches
Cylinder Heads: 
Cast iron cylinder block, maximum of two valves per cylinder, aluminum heads are optional.
Cam/Lifters: 
No overhead cams allowed
Induction: 
All intake manifold bases must be cast for a minimum distance of three 3" from the intake cylinder head interface/spacer
Ignition: 
No restrictions on valve train or oiling systems.