360 stroker how much HP is picked up if everything else stays the same?

Was thinking 10.2's
I think the W2's have alot left. They are basically untouched from when I bought them new 40+ years ago. they have been on the car probably 35 years. Mild pocket porting, back cut the valves, think thats it. The STX-21 cam (.560 lift) was put in when it became a street car. (ran 10.80 122 through the exhaust). TurboAction 8" 4400 converter. Think I still have a .590 lift lunati cam I used a long time ago. Funny how some of the old mopar cams (the lunati and the Racer Brown STX-21 are probably 45+ year old designs) still work great. Who's a good W2 head porter? This is just a bracket car, don't really ultra porting that might cause problems (leaks). need consistency, and problem free. Street miles probably 100 a year.


Ok we gained .40 going from a 4400 stall converter to a 5600 stall in my sons duster. You got a great cam so I would consider getting 8 (1.6) intake rockers to bump you up to .590 lift. Porting the heads and intake would surely grab you some ET. What size intake valve? What size carb?