You can buy brand new Arneson asd7 m packages for less then a set #6 or 8 or even a set of Arneson asd 8 which Also come by used pretty often

What do you have ? Have you taken it apart ? I have the arneson 7 drive that uses u joints and all the parts for that drive are still available

Is there anything wrong with your 1600s? The housings, gears and chain will pretty much last forever. The CV joints go along time as long as the oil is changed periodically. Water and rust are usually the biggest worry.

Arneson ASD8, M6, M8

But if you already have Arnesons I would look into upgrading those, dont be scared to make some custom parts! I dont know much about the 1600 But Kvogt does, check out his BADAZZ setup!

The Arneson ASD7 is a great drive but not rated for 1000

I can get 2 complete #6 drives with transmissions and the gimble and even propeller for less than 20 k.Used but no problems...For both
My boat is going out of the usa and there will be no chance to do service on it and there are no parts.I know that maybe there is nothing wrong with them now but later pushing almost 1000 hp maybe something could happen and then the toy will be in the garage for a year or more..? If they were asd8 s I would not think about changing them.Also the boat does not have propellers now and I have to spend 5000 for 2 used ones just to test the drives to see if they are good.

Buy whatever you wish but your pissing your $$ away no matter what as the drives that are on the boat are good, even though they are 40 yrs old, they work and all is good.

You have to buy propellers regardless if you stick with these drives or you change to another drive. They all require a propeller so I don't see the point here with propeller cost. The ratio can be determined in far less time than it's taken to write these post over and over.

You have to contact someone (I gave you Maryland Offshore's #) and have them perform simple task to determine the ratio.

I don't know why you have so little faith in the drives that are good and so much faith in everything else.

[QUOTE=turbos230;4565517]I can get 2 complete #6 drives with transmissions and the gimble and even propeller for less than 20 k.Used but no problems...For both
My boat is going out of the usa and there will be no chance to do service on it and there are no parts.I know that maybe there is nothing wrong with them now but later pushing almost 1000 hp maybe something could happen and then the toy will be in the garage for a year or more..? If they were asd8 s I would not think about changing them.Also the boat does not have propellers now and I have to spend 5000 for 2 used ones just to test the drives to see if they are good. [/QUOTE

They are probably wet dumps and those will throw away a 100 hp each , and you have to fill transom and cut new hole and probably relocate engines so the money for props you have throw away then and some speed as well , I bought a set very nice 5 blades for 2500 just have some patience or buy first a set cheaper 4 blades or even 3 blades to figure out a base line and then buy a pair 5 blades

im living in Europe so know the problem whit parts but six drive parts you won't find easy as well and the Arneson use pretty normal standard stuff in them and if have a good machine shop in the neighborhood they can make it if you can't find it elsewhere

and best of all the props for a Arneson and six are about the same price so better hope the right ones are whit the set sixes

Turbo230- have you looked into having your cv/u-joints custom manufactured by a machine shop. I'm sure it won't be cheap but could be more economical than changing out drives. Yes, I mentioned economical and something boat related in same sentence yowsa...

have you talked to arneson? they claim parts still available for the 7. Arneson Surface Drives

1100+ i run through my scx