Can this mpi be used with a Alpha drive
#21
Everyone is on the money here with guidance.
The small block doesn’t make the torque needed to get the 242 going. Your swap “may” get you a 1-2 mph increase in speed. That’s a whole lotta nothing for a lotta work!
You’d be ahead of the game by getting a 454/330, and sticking it in front of your Alpha (the ‘87s were built this way). The drive will live if you’re gentle with it on holeshots and air time. That could give you some time to source your Bravo conversion parts (and a better 454).
The small block doesn’t make the torque needed to get the 242 going. Your swap “may” get you a 1-2 mph increase in speed. That’s a whole lotta nothing for a lotta work!
You’d be ahead of the game by getting a 454/330, and sticking it in front of your Alpha (the ‘87s were built this way). The drive will live if you’re gentle with it on holeshots and air time. That could give you some time to source your Bravo conversion parts (and a better 454).
#25
Registered

Joined: Apr 2014
Posts: 2,345
Likes: 191
https://louisville.craigslist.org/bp...682265974.html
I don't see an inner transom plate.
Shipping one of these on a pallet is way less expensive than you think.
I don't see an inner transom plate.
Shipping one of these on a pallet is way less expensive than you think.
#26
Banned
Joined: Jul 2011
Posts: 9,594
Likes: 45
From: Ft. Worth TX
the Bravo came out in 1988 and up till then the 454 mated to an alpha one of 1.36 gear ratio. There was a couple of reason for the alpha to have 1.36 gear ratio when mated to the 454. Anyone what to take guesses at why ?.
#27
Thread Starter
Registered
Joined: Jun 2018
Posts: 420
Likes: 35
From: Michigan
https://louisville.craigslist.org/bp...682265974.html
I don't see an inner transom plate.
Shipping one of these on a pallet is way less expensive than you think.
I don't see an inner transom plate.
Shipping one of these on a pallet is way less expensive than you think.
what gr am I looking for on a bravo 1 or 3?
Last edited by Alwhite00; 09-26-2018 at 09:38 AM.
#28
Registered
Joined: Nov 2016
Posts: 848
Likes: 19
From: Mobile, Al
A bravo 2 is designed for heavy, slow work boats. They are physically larger lowers. You would be dragging more surface area with a b2 than a b1. No need for a b2 on a 242, over kill and losing speed.
The b3 is a great unit. Very efficient and very low slip ratio. However the props limit out at 26 or 28 I believe. No doubt it would give you one hell of a hole shot. They mainly come behind under powered engines in somewhat heavy boats. For instance my buddys 23' crownline bow rider with mpi 350 mag. It spins 26p props and the best I've gotten from it is 53mph. Not bad for that boat.
I personally would stick to the standard b1 with 1.5 gear as most of them came with.
The b3 is a great unit. Very efficient and very low slip ratio. However the props limit out at 26 or 28 I believe. No doubt it would give you one hell of a hole shot. They mainly come behind under powered engines in somewhat heavy boats. For instance my buddys 23' crownline bow rider with mpi 350 mag. It spins 26p props and the best I've gotten from it is 53mph. Not bad for that boat.
I personally would stick to the standard b1 with 1.5 gear as most of them came with.




