Need Help With BBC 840 Casting Information

[gearjammer]

I have a set of 840 casting and I haven't had a chance as of yet to get them flowed, does anyone here have or know the 840 specs

Flow Numbers
Combustion Chamber size(s)

Thanks for the help

Phil Rowe

[gearjammer]

Knowone really knows anything about these heads, Thanks anyway

[Bob Pagano]

According to the tech sheet they are 114.9 cc chambers

[Ron Miller]

Originally Posted by gearjammer

Knowone really knows anything about these heads, Thanks anyway

Have you ever heard of your basic search engine,,,,, hint Goggle,,, etc.

[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.

[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

[mannymen]

GearJammer, For those running 427/425HP with a cast iron head in Stock & SS you will find that most run either the 840 or 291 head.

[gearjammer]

Originally Posted by Ron Miller

Have you ever heard of your basic search engine,,,,, hint Goggle,,, etc.

Ron thanks for the advise but I would hold and trust the word of those from this site that might be using them current or in the past over and above your recommendation. But thanks again for your reply.

Phil