Head chamber sizes

[Orionsax7]

Does anyone know what the chamber sizes are on 71 360 j heads and 71 318 675 heads? Can't seem to find a straight answer on the net

Thanks

-Alex

 

[dgc333]

only way to know for sure is to measure them but they run in the range of 68-72 cc's with most being on the higher end.

 

[rumblefish360]

My 72 J's with 2.02's speced @ 72cc's. But I have to echo ecatly what dgc333 said. This is a variable that needs to be personally looked at.
A change in valves can alter chamber cc's by a wide margine. Anywhere from 4-8 cc's, valve dependent. Other head work not included in this so far.

 

[BJR Racing]

The 675 heads will be in the 62-64 cc range.