Biggest cam in stock piston 440

BBBCUDA said
I know I will have to check for clearance, but I was wondering what cams you have gotten to fit in a stock piston, (no valve relief) 440? These are the older TRW #2266's, I think the newer ones with the same # sit lower. I have 906's with 2.14"/1.88" valves. I am looking at a Bullit grind, # 4038694, that is 256/264 degrees @ .050". with .552/572" lift minus the .016" lash. I will rent the piston notching tool, but it sure would be sweet if I didn't have to. Thanks.

I have used 3 different cams with those pistons with no trouble

2 purple shafts:

Solid:
Adv. Duration: .284°/284°
Dur. @ .050'': 241°/241°
Lift: .528''/.528''

Hyd:
Adv. Duration: .320°/320°
Dur. @ .050'': 272°/272°
Lift: .533''/.533''

1 Comp Cam:

Hyd:
Adv. Duration: .305°/305°
Dur. @ .050'': 253°/253°
Lift: .522''/.525''

All worked well with the Comp Cam standing out as the best one though.
These specs are a bit less then you were mentioning but I think even these are more than enough for your application.