Hey there,
I just coincidently found this thread about my video.
Thanks for the comments.
This CV-23 was fitted with a new Chevy 454 and a new Berkeley 12 JE jetdrive in 2003 by the P.O. He chose for an AA impeller which gives a bit more holeshot and lower (cruising) rpm's but it harms the topspeed a bit because the engine can't reach the rpm's where most HP is (i'm guessing around 4800 rpm).
It runs 54 mph on gps running 4200 rpm max, and back then (1977) Glastron claimed the same package with an A impeller and ford 460 ran 55 mph.
We weren't running much at wot in the video, most of it is at cruising speed around 3600 rpm.
Cor