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CNC Ported GM-Chevy BBC

Manufactured by Dart CNC Ported GM-Chevy Cylinder Head
Send us your unported Dart GM-Chevy BBC cylinder head to have it professionally CNC Ported in-house by Direct Motion Motorsports on the Rottler P55, our revolutionary 5 Axis CNC Cylinder Head Porting Machine.

About how the Direct Motion Motorsports process works
Photos of 5 axis cnc ported heads

This head is flow tested on a Superflow SF600 at 28 inches with a 1/2 inch radius intake plate and a short stack exhaust tube. Please check back soon for actual flow numbers of our CNC Ported Dart GM-Chevy BBC

Volume
Combustion Chamber
Intake Port 360cc
Exhaust Port
Valve Size
Intake
Exhaust