Theoretical look at why the 4V Cleveland got its port size.

A Guide to Fitting LS6 Valvesprings Into Almost Any Head

Porting XE/XF 4.1L 6 Cylinder Head

My Flowbench and Why The Test Depression Is "Low"

4AGE 20V Motorsport Testing via Taranaki Car Club Speed Weekend.

Porting Holden VN Heads

4AGE 20V Highly Modified Silvertop Testing Stock ECU Limits.

2005 Boxing Day Burnouts at Ferndene Speedway.

Turbo Territory Airbox Test by Sunday Drive and Drag Racing

4AGE 20 Valve Blacktop Silvertop Stock Piston and Conrod Review, Weights and Modifications

Torque and Horsepower, a Hobbyist Engine Builders Perspective - Part Two

Torque and Horsepower, a Hobbyist Engine Builders Perspective - Part One.

Cleveland Oil Pump Drive Torque Test - Stock Vrs ARP. Who Will Fail First?

Ford Cleveland Oiling Secret Continues. A lesson in how ALL oil pumps work and how to improve them.

4V Cleveland Flow Test with Port Stuffers

Ford Cleveland Oiling Secret. How and why the 351C failed under Motorsport conditions.

4AGE 20V Exhaust Port Modification

DCC Track day at Taupo Track 3