My first pump gas stroker was a 400 block bored to 4.375 and stroked to 4.25 with BB chevy rod sizes,(512 C.I.) I used a set of 906 iron heads with bigger valves that flowed 260 CFM at .600 lift, not a set of real good heads
It was 9.25 to 1 comp. ratio, I used a Eddy low deck six pak intake and stock type carbs, that motor made 612 HP at 5600 RPM and 644 Ft. Lbs torque at 4500 RPM on CA pump swill back in 2004 on Vrbancic Bros. DTS engine dyno in Ontario, CA. That motor exceeded my expectation by a bunch
I bought and used a Comp Cams custom grind solid roller cam that has 260 degrees at .050 with .420 lobe lift, the exhaust has 266 duration at .050 with .409 lobe lift, I used a set of 1.6 rockers so the net lift at the valves is right at .700
It pulls like gang busters, it is a real tire spinner also on bad surfaces
My message is don't be afraid of big camshafts, stroker motors eat them up
I have used custom ground hydraulic roller lifter grinds in other stroker motors, both types work well
I have a 3.91 stroke 440 that is 464 C.I. with a set of Eddy RPM non ported heads that has a Comp Cams XE295HL in it, it has a six pak also, that motor is right at 3/4 second slower than the other motor is in my Duster
The old 512 motor is now 518 C.I.(I increased the stroke to 4.300 to raise the compression ratio to 10.29 to 1 with the Eddy RPM heads I had on it back then) and I then switch heads again to a set of Indy SR with M.W. ports and a single Indy 400-3 intake with a Holley 1050 Dominator. The Indy heads increased the compression ratio to 10.78 to 1 now
Don't be afraid of using a bigger cam, the stroker motors make them seem smaller than when there in a stock stroke motor