Outdrive

[Magnum Ralph]

A friend has a 22 eliminator on a small lake with a 502 that goes honest 82 with an ss drive . After 20 years we are rebuilding better est 650 horse. He has been advised to bolt on a Blackhawks. The boat is run on smooth water only. Please provide advise and recommendations.

[duckhunter]

Blackhawk drive seems to work great in some applications, but also has a lot of negatives - drive availability, prop availability, parts availability, strength, setup, etc.

Have not compared the numbers, but I'd definitely look at a shorty Bravo/Imco setup as a strong alternative to the Blackhawk. Especially if there isn't some strong anecdotal evidence that the Bhawk will work on that hull and live behind that power.

[Ghost]

DH is probably right, though I'd think the BH's counter-rotation might be pretty helpful in a 22 with that kind of power, to minimize torque effects. But that's a fair amount of juice to put through one I think.

[Pat McPherson]

I'm vary surprised an Alpha drive could handle the torque of a 502 for any length of time.
I don't know much about BH drives other than props are limited and vary costly.
I'd suggest, as others have, a strong Bravo (XR, XZ, Imco) with a short lower.