unreal offshore

Guys, look for some feed back..

Was thinking about building a pair of small blocks for a 2004 32ft fountain . It currently has 300 hp mpi small block set up.
Was thinking to start with a Dart Aluminum block and Pro1 aluminum heads to chop some weight
It would be 400 CID.. full roller motor with forged bottom end. looking for 450 - 470 hp

Any one have any comments on Aluminum small blocks for Marine applications?
Was thinking to go closed cooling? is this a must for an aluminum block?

Boating in freshwater only for this boat.

Regards,

Unreal Offshore.

thirdchildhood

iTrader: (6)

I think you are in uncharted territory!

Wildman_grafix

I have always thought the new AL LS motors would be killer in a 32.

Get weight off the back.

SB

iTrader: (1)

Aluminum SBC blocks are not cheap. Would probably be same money to use current LS architecture with a bunch more power.

Sydwayz

iTrader: (1)

Yep, I'd do with LSX power.

unreal offshore

The reason why i am trying to keep the weight off. is 1) yes speed !!!!!! but my other consideration is towing it when on the trailer.

unreal offshore

How much power can you put into a small block and keep it reliable?

Black Baja

iTrader: (2)

My buddy put two LS3's in a 30' Profile V bottom. They are all aluminum. Boat runs 95mph all day every day. Pump gas re-jetted hp 500 carbs. He used closed cooling systems off 454's.

unreal offshore

Nice.. That LS3 is an amazing engine..

innerrage

iTrader: (1)

thiers a guy on here that tyler crocket did some nascar small blocks in a boat for him and it kicked ass