Offshoreonly.com - Bore notching 454's

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- - Bore notching 454's (https://www.offshoreonly.com/forums/general-q/357215-bore-notching-454s.html)

MILD THUNDER

10-19-2018 07:13 PM

Brian tooley(trick flow heads) has a great video regarding valve diameters, valve lifts, and coefficient of discharge . Ill look for it later. Good topic though

getrdunn

10-21-2018 12:54 PM

Quote:

Originally Posted by MILD THUNDER (Post 4655095)

Brian tooley(trick flow heads) has a great video regarding valve diameters, valve lifts, and coefficient of discharge . Ill look for it later. Good topic though

definately a good topic. I know Jim has played around with a lot of that over the years. On small and large CI builds. Look forward to seeing the link.

Tinkerer

10-21-2018 07:40 PM

ICE - that narrow space is there even without bore notching. The head if the valves are un shrouded will be that narrow - bore notching just narrows the cylinder for a small area.
The higher lift cam the more the airflow is blocked.

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