Which way ya going?
piston to match heads ...
or
heads to match pistons?

Dan'l

781/049's... big chambers, small valves...118-122 cc's
990's big chambers, can have small valves, or 2.19's...119-122cc's
Dozens of other BBC heads out there.
I run 427 heads, 2.06's, 100 cc's, HONEST 9:1 comp ratio, w/ flat top pistons, not great for 6K+ rpm, I'm at 4900 r's
W/ 781's, Id be at 8.1 c/r, I'd loose 50+ HP, or more

Where ya startin' and where ya goin'?

Dan'l

is the only casting number on the inside of the head?  i dont want to have to remove my exhaust just so i can pull a valve cover to see what heads i have.  the only mark i can find on the outside is on the passenger head at the rear.  "6318" and a "1"

damn this is the only pic i have of the inside... next time i have the motor out i guess ill take a peek.  block is 3999289 but i guess the heads could be anything...