410 LA small block will not rev past 6000

Isn't he gonna need a lot more cylinder head ?

410 x 7000 rpm / 1,100,000 = 2.61" ish minimum csa

410 x 7000 rpm x 0.0009785 / 8 = 351 cfm

472tq x 7000 rpm / 5252 = 630 hp
509tq x 7000 rpm / 5252 = 679 hp

Guesstimated tq at peak hp (7000 rpm)
(410 x 1.28 tq:cid x 90% = 472 tq @ 7000 rpm)
(410 x 1.38 tq:cid x 90% = 509 tq @ 7000 rpm)