408 Scat Stroker Kits

you would need really big heads like ported W2 to need more than the rpm mentioned above (well not if you are YR)
We ran 4.25 stroke with 6" rods and could not even run the over 6000 rpm speeds mentioned above- well not much over 6000 chevy with ported 283 "fulie" heads
did have a big wide torque curve and won "Top fuel" (alky) at the 62 AHRA nationals at Cado Mills Texas- really greasy track
the 4" stroke motors (400 inches also 6" rods) would rev 500 rpm higher with the same heads- it won "top gas" at the same meet
flyfish said "Yeah, most of the guys I race with that have 4" crank small blocks are at max HP by 6200-6800"
physics has not changed in 50 years even if the mopar does have 1/8 longer rod
hint- run the longest rod you can- there are tradeoffs but bottom line -longer rod is better- but you have to change the cam timing

OZN you will be fine power is in the heads you want the most flow at the lowest lift not just highest flow at max lift, get flow numbers and then cam to utilize