raymo1979

iTrader: (3)

I am looking to put a super charger on my baja 240sport it has a 454 330hp.Iwas going to freshin up the motor over the winter and put forged pistons and a steel crank new bearings etc.Is that the way to go?how much boost can i run safe?

BDiggity

From what ive read the 7.4L has weak internals & a sc may not be most reliable option. i have same engine & saving my nickels for a 502 to replace it.

737jetmech

iTrader: (1)

Upgrade your fuel system and oil cooler .Arp rod bolts , upgrade valves. We ran 5 psi for 3 seasons prior to removing blower to sell the boat easier.
The new owner ran the boat over a pile of rocks first time out!

HiPerf2000

iTrader: (2)

You are on the right track. You also need to put in inconel exhaust valves.

I did this in my old boat. ran a 174 B&M at 5lbs boost. made 560 hp on the dyno. With the small blower the boat idled like it was stock.

HiPerf2000

iTrader: (2)

Oh yea, i used my stock fuel system and stock oil cooler. Just be sure to get fuel press and boost gauges to keep an eye on things.

SSComp

Want to trade? Bro in law needs a new 330hp in his cruiser:

www.geocities.com/bajalion

z.zuperboat

To build a motor with a crank rods heads and blower is going to be 15k. I have a 540 that made 625@5750 for 6k. Only has 22hrs on it. This should rocket a 24 baja over 80.

e8411a

Sutphen30, are the blowers the polished 172's or the powdercoated black ones? I'm asking because I am looking for one to purchase asap. Port blower ate a piece of the flame arrestor.

e8411a

Raymo1979, If your interested I have a friend with a B&M 420 megablower for bbc. Complete package plus superchiller.

dyno

I have a set +.030 forged pistons and rods with arp bolts I'll sell ya for $200 plus shipping.