Deck height and compression

[Strawdawg]

deleted due to faulty computations from incorrect compression calculator...

[Strawdawg]

The ideal solution, imo, would be to bolt on a set of closed chambered aluminum heads which will eliminate the quench problem, and, being thermally less efficient, will also eliminate any concerns with pump gas. 

[Strawdawg]

how do you have quench with an open chamber head?  The combustion chamber is recessed at least .100" at all points, I believe.

[AMXguy]

I'd be totally happy with 9.88.

 The timing events on my card are .050 9.5 41.5 49.5 1.5 , I don't have a clue what those numbers mean. I have this cam in my six pack Challenger and it runs and sounds great, same pistons too but I don't have any idea what the deck height is so I can't say what the compression ratio is.

[Strawdawg]

the link straw posted doesnt factor in head gasket bore size and the true compression will be 9.88 with .060/4.410 gasket

.045 quench is very very good. not a problem at all 

id still like to know the cam timing events.......

old school calculator says 9.99 which is pretty close to your number...must be old math vs the new math

[moper]

As said... 906s are open chamber and deep. I have zero deck quench domed KBs that stick up .070" above the deck. I have to mill the heads (452s) .040 to get quench down to .040. So the chambers are .110" deep. On yours .015" will not give you any quench, and you could run the steel shim .18" and have plenty of piston to head clearance.