Need Help With BBC 840 Casting Information

[gearjammer]

Originally Posted by Jim Grande

Phil,
The 840 castings are rect. port heads with 2.19 int. and 1.72 exh. valves. They are closed chamber heads at 104.9 cc. Flow #s all depend on what you do with them as far as valve job and port work.

Jim, thank you very much for your reply! that answers my question. I'm looking at building a pump gas motor and I want all the quench I can get and that combustion chamber will work great for my purpose. By the way I don't trust all those other places that either don't have all the information or its so broad it doesn't answer the question(s)

Thanks again,

phil