Hello I would like to know what the heats are doing on speed, I have a 496 ho stock? Full tank Half tank make a differance?

Saw a best of 67 in my old Heat (2002) with one person, near empty tank, with the wind, with the tide, and light chop. Never duplicated. You're going to hit 62 in hot humid air and a load. Tried a bunch of props too.

72 mph on the GPS with CMI hearders on mine in Havasu in March of this year coming back from Pirates... Little over half tank both sides 4 adults on board.

With a 496? I know some HP 500 EFIs that barely hit that number.

Nothing to crazy BBC... 454, Alum heads, cam, CMI headers, Bravo 1 drive, 24P bravo 1 prop Labbed by BBLADES 5200RPM 1.5 gear ratio...

9% slip?

Idk never calculated it out....

Ahh...I thought you were referring to the Merc 496 which is what I had. 72 is a pipe dream with that motor and hull.

I was only that lucky once.... Chop was just right, headed down river with the current and the wind at my back. I boat mostly at Saguaro Lake in Phx, Az and there Im lucky to see 64... When it's dead hott here over 100+ degrees you can forget about it!

I always thought nordic heats were faster than those #s