Under Cut Stems VS Back Cuts (Flow Bench Test) Vortec Heads

Описание к видео Under Cut Stems VS Back Cuts (Flow Bench Test) Vortec Heads

Vortec Intake valve testing
Do Under Cut "Skinny" Stems add Flow? Or just a reduction in valve train weight?
What about back cutting the valves?
Here are some flow bench test results you may find interesting

Flow testing done at 28" 4.030 Bore with stock style 3 angle valve job

forgot to mention in the video
The backcuts are approx .050 wide

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