• 5/16 Valves Available
• 2.180 Intake Valves
• Down Nozzles Drilled Upon Request
• Spread Port Exhaust
• 52 cc
• Available Lightened
• 80/135 Valve Centerline
• 1.600 Exhaust Valves
• Available in Three Intake Port Volumes, 270, 275 and 285 cc


The AK series is the latest in sprint car technology. This head offers new features such as: a 13° valve angle, a relocated spark plug and down nozzle location, and an 80/135 valve spacing. The BP AK head is offered in three intake port sizes, 270 cc, 275 cc, and 285 cc. Special components required for these heads are injectors, sheet metal valve covers, and a shaft rocker system.

Flow Chart
Easy Order Numbers
Instruction Sheet