Every 440 motor that I raced went faster with more air and fuel increase, bigger carb, bigger cam shaft and or bigger rocker ratio on the same cam went faster at the track, bigger heads that flowed more
My first pump gas stroker motor had a decent solid roller cam in it, 260@.050 with .420 lobe lift on the intake lobes and 266 @.050 with .409 lobe lift ground on 108 LSA installed from 1.5 to 2.0 degrees advanced. I swap heads, rocker arms , intakes and carbs, all with the same camshaft and two different sets of lifters. First set of lifter had .750 diameter wheels(Mopar brand that broke two roller into two parts wheels before I replaced all of them
) and the second better set had .820 wheels, which made more duration and lift making the cam a little bigger
That motor was a great experience and excellent learning for me, it started off running 10.69 at 124.MPH in my 3450 Lb. pump gas Duster with a set of ported big valve 906 iron heads with 9.25 to 1 compression ratio, I swapped the heads to a set of CNC ported Eddy RPM heads and that picked up the car to 10.49 at 127..MPH.
I swapped the crank out from 4,250 stroke to 4.300 stroke crank to increase the compression from 9.25 to1 with the pistons down .025 up to zero deck height which increase the compression ratio to 10.29 to 1, that help it go quicker and faster also
That was with a low deck six pack set up with original 440 automatic carbs.
The final combination was with a set of Indy STR Max wedge intake ports and a Indy 400-3 intake with a 1050 CFM Holley Dominator carb. That help the car run 9.993 at 134.6 MPH through the muffs on Oregon pump swill with me in the car
I had dyno tested a set of Indy CNC ported 440-1 heads also and they where worth right at 50 HP increase on the Duster pump gas motor over the SR heads on that motor on pump gas. I ended up using the 440-1 heads on a 440 stroker 526 C.I. race motor. that I ended up selling before racing it