what drive is model #1721003 ? what drive would you recomend for 1000hp? thx, rm

That's a 1721 Arneson/BorgWarner drive unit. Drop box unit, can be RH or LH rotation with different reduction ratios.

Not a 1,000 hp drive unit.

What size boat and application?

35ft 9" mistress,

rik how well do surface drives work on old school boats, so steps, no pad, heavy as cement? thx, rm

oops, applicataion...going from bar to bar really fast....in big water

You can use the ASD7M Kits for you application. They will work great for your application.

Rik

Phil.....I notice that you are asking about drives and props and big horsepower engines etc. etc. BUT........I DON'T SEE ANY INQUIRY ON A TIGHTER BOLSTER FOR THAT BOAT???????

First things first, I know, but don't forget that bolster replacement, make it tight too!!!