Maximum Power for Alpha One
 

ive heard stories of people pushing 500HP out of an alpha drive. Now i dont want to sound stupid or anything this is something i heard. can someone please verify for me what is the max hp that u can use on an alpha one drive... basically what i need to know is if i put a stock 454-330hp on an alpha one will it work fine or will it break the drive...just need some better knowledge on this.. id appreciate anyone to chime in on this...thanks a million for your advise....

Actually , the Alpha drive came with 454/330 HP.
So i would say YES you can put 330 HP on an Alpha .
Buddy of mine had a 32 Pachanga with two 330's and Alpha's.
Never had a problem.

Triple Digits- just wanted to be the 1st to say it..

Alpha's can handle higher HP levels behind a SBC much easier than a BBC. The extra torque the BBC makes will break the Alpha much easier. If you drive the boat with sense and do not hammer the holeshot you should be fine. Keep the prop in the water. Alpha shafts are far too weak to be wave hopping with a BBC.

I've ran 5 modded SBC's behind two different Alpha one drives. My current 385ci SBC makes around 475 flywheel HP and have had no problems with the Alpha. I did rebuild it with HD upper gears and a late model HD non oring vertical shaft.

Vid.....

http://www.youtube.com/watch?v=t3z0apjY1XQ

you boats hull design and the weight of your boat will effect the reliability of the alpha when applying big power.

had a 454 330 / alpha on my 87 chris craft stinger 222 after 20 years the motor blew up but the drive is still fine

thanks for the info...the boat is a 24' Monza closed deck. doesnt weigh much.. wanted as little weight as possible in the back..

I run 640hp with 610 ft torque threw my Alpha. I would not run that on anything bigger then a 24 foot boat and 3800lbs or less.

what size prop are you guys turning with those 454's/alpha set up?

Pics please:D

Jeff

I turn a 15 1/4 28 over 6k with my 434 small block with a 1.47 gear ratio

alpha drive
 

I'm turning a 30 bravo prop non labbed behind a healthy injected small block at 5200.Blew a drive last year but dont't know the shape of the drive when I started.Just blew the upper. Changed it and am still going.JOHN

you can use a bravo flywheel coupler it works real good,
I'm puttin over 500 hp to the water in a 21' scorpion. still only a couple months old