I have no idea what that means.
He was agreeing with my previous statement that the 4.8 is a good starting point
for a D class motor. You can make good power with them. Obviously the lack of CI
will limit potential, and even with the shorter stroke from the factory you still won't
want to spin in past 6,500RPM, really 6,000 unless the springs have been upgraded.
That's the beauty of power adders- big power without having to spin (break) parts.
We built and tuned our combo to make peak power below the "danger zone" of LS
motors, which is realistically 7,000RPM without spending too much money. We run
the cast OEM crank and make over 1,000 hp & tq. No point in spinning it too high.
Dave, Mike and I have broken a lot of parts over the past 10 years, and we are
merely trying to help guide you in a direction that will (hopefully) allow you to go
fast without breaking the bank.