backformore are you telling me that the only drive that will work is the bmax? i see you have a fountain did you have imco's on them and how did they work for you?
what size is your boat? what king of horse power?

I'm not saying it is the only drive for you...the others "might" work, 1,2,3 seasons but the Bmaxs "will" work...and one pop of the others will cover the cost difference between the Bmaxs and the others.
I have a friend running 8-71s on Bulldogs in a 42 Cig with XR's and only broke a vertical shaft on one so far...but he babys it to where its not worth the blower upgrade.
Im runnig 800HP/557ci Blowermotors on a 1993 nonstep 42 Fountain...whats your setup?Broke the IMCO's and then went with the Bmax's.
Heres a pic of the upper gears next to each other....XR, XZ, and Bmax.
Which set you think will hold some real power.
BTW,
XR...no warranty
IMCO...no warranty
Bmax...warranty
I have a set of fully rebuilt IMCO SC uppers for sale if your interested...$4000 each.

is the b max the straight cut or the upper right?

The straight cut is the XR, the heilical cut small one is the XZ and the big one is a Bmax gear.

i would have though they used a large starigt cut instead of a large helical. Regaurdless there is still alot of meat on that gear.

i have a 2000 37 foot outerlimits with 700 blower motors &xr drives

HEY SUPERSTAR I THAT WE KNOW WHAT BOAT YOU HAVE,YOUR ONLY OPTION IS B-MAX! I OWN WILD THING A 37 OL WITH TAZ ON THE SIDES & BOW.NO ONE KNOWS BETTER THAN I DO. I BLEW 7 BRAVO'S OFF TILL I LEARNED THE LESSON. IV HAD MY OL GOING ON THE 4th SEASON. THE DRIVE EXPERIENCE HAS BEEN A VERY COSTLY & UPSETTING EXPERIENCE. CALL ME 216-390-1330. RON

What ci are the motors? TQ is the drive killer.
Then if you go with the max's you can up the boost and never worry.

HEY SUPERSTAR SORRY I MISSED YOUR CALL. GIVE ME CALL BACK WHEN YOU GET TIME. RON

hh