what size you think???

What size do you guys think roughly the chamber size is on a set of 516 closed chamber big block heads that been milled .020??? im guessin in the 75cc range ???

I ran a set of basically stock 915's {simular to the 516's} on my 440 cu in Coronet with Ferrea valves and no porting done at all. The car {3050 lbs} ran a 10.99 in Seattle {best}
heres a chart on flow I found

here's a good article on heads

typical factory chamber volume of 78.5 cc your probably pretty close, CC them and know for positive.

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What size do you guys think roughly the chamber size is on a set of 516 closed chamber big block heads that been milled .020??? im guessin in the 75cc range ???

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80 to 83 CC Best way to make sure is to check it, you can go to a drugstore or a veterian supply like a big feed store and buy a large syringe and check it that way