How much power is it going to take?????
 

I am looking to get my 240 sport (same hull as 24' OL) to about 70 mph. I am going to build the motor after I decide where to draw the line between power and reliability. Is turn key reliability and 70 mph to much to ask for? I hope not. What do you guys think?

Re: How much power is it going to take?????
 

496 HO no less.
Hell maybe even more?
My first boat was a 98 O/L with a 454 Mag and it only did 58 ewwwwww :eek: :eek:

Re: How much power is it going to take?????
 

'97 Outlaw w/525sc & chiller put it up to low 80's. Get 500 ponies into that thing and you should hit 70 easily.

Re: How much power is it going to take?????
 

I have a 97 with an HP500 it runs 71 on gps with a 23 pitch 3 blade mirage prop that was done by Darren at Houston propeller. It was repitched to a 24" and had the blades thinned. It runs this speed in the heat of the summer in Phoenix AZ and in the fall runs about 73

Re: How much power is it going to take?????
 

It will take LOTS of HP. I agree with everyone else, at least 500. Build a supercharged motor with low boost and good carbs and you should be fairly turn key/low maint. Or stroke the 454 to 496 and cam it up. Either way you need exhaust, that ain't cheap.
I had 600 in a 226es and it was a 80 all day boat, best of 88 with a big wheel and bigger carb. Not too user friendly or turn key.

Re: How much power is it going to take?????
 

I have the exhaust already on it. The motor was rebuilt about 250 hrs ago. They put it back together basicly stock and added roller rockers + Stainless Marine Exhaust. What does a 496 kit cost?

Re: How much power is it going to take?????
 

I had a 91 260 sport. I stroked the 454 to a 496 (Actually worked out to a 489 give or take) with merlin oval port heads and stainless marine exhaust. It had a comp cam but I don't remember the grind and an 850 holley. IT ran 70 to 72 on the gps. I ran a 25p 3blade. I did all this myself except for machine work for under $3500. Last i heard it was still running 4 yrs later.

Re: How much power is it going to take?????
 

kennyo,how fast is that 272 these days? I got mine to low 90's now w/new top end,confident I'll see mid 90's before summers over,Smitty

Re: How much power is it going to take?????
 

I can offer you a 540 or 572 aspirated engine turn key for 200 hrs before you need to touch it with 600-750 hp depending on how agressive you want to get. let me know if you are interested.
Thx Mike
Roccard Marine Engines
570-956-2840
[email protected]

Re: How much power is it going to take?????
 

Thanks for the input.....
Looks like I need at least 500hp. I guess its time to dig up a jar of $$$$ and get busy........... Well maybe there are more things to check into first...