Category: Cylinder Head School

A new way of spec’ing Cams: Speed Spec.

by David Vizard | Jan 17, 2017 | Cam School, Cylinder Head School, Engine Builds | 2 |

A revolutionary, fast and hyper accurate way of spec’ing and selecting catalog cams; A...

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PolyQuad – The future of 4 Valve Engines

by David Vizard | Jan 7, 2017 | Cylinder Head School, Engine Builds | 3 |

Question: What does a PolyQuad head do better than a current and typical four valve per cylinder head?
Answer – Everything ..

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motohack April 20, 2018
on PolyQuad – The future of 4 Valve Engines
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on A new way of spec’ing Cams: Speed Spec.

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