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I've got a set of BBC open chamber heads that have a very minimal topcut to the seats, just barely enough of a cut to define the 45* seat. This is how they ended up when dialing in the installed height. Heads have not been flowed but I was curious if the experts here might know if there's flow to be gained on this style head having more of a top cut? And if there's less reversion with the way they are set up now?
 

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I've got a set of BBC open chamber heads that have a very minimal topcut to the seats, just barely enough of a cut to define the 45* seat. This is how they ended up when dialing in the installed height. Heads have not been flowed but I was curious if the experts here might know if there's flow to be gained on this style head having more of a top cut? And if there's less reversion with the way they are set up now?
This will hurt the flow, you need more width, dont know about the reversion.
 
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