horsepower

[jackmick]

Can someone tell me what is the horsepower of the mercruiser 305 ci 5Ltre V8is, I am looking into buying one and get different answers from different suppliers and what would be the length from waterpump to flywheel and the width of the engine.
I am replacing a V6 4.3 LX on my boat

 

[Dunaruna]

Re: horsepower

220

 

[Zackman]

Re: horsepower

Here is a listing of installation drawings http://wwwarchive.mercurymarine.com/sterndrive_engines for current Mercruiser Engines.​

As far as horsepower, 220 Hp with carburetor and 260 Hp with fuel injection, in their current form.​

 

[Bondo]

Re: horsepower

what would be the length from waterpump to flywheel and the width of the engine.

Ayuh,...

The Width is the Same as your 4.3l....
Merc. lists the Length from the Rear Motor Mounts, not the Flywheel...
The V6s are 28, 1/8"...
The V8s are 32, 7/16"...

Motor mounts, fore to aft, C to C, are 15, 9/16" for the V6,+ 19, 15/16" for the V8s...

The 305s have been rated from about 185hp tp 260hp, depending on the Induction system used,+ the Vintage...

All that said,....
Why wouldn't you be lookin' at a 350,..??..?? It's the Same Size,+ Money as the 305s....
Free HorsePower so to speak...

 

[chiefalen]

Re: horsepower

Thats it ^ what Bond-O said and latter if you want theres all kinds of stuff you can do to a 5.7 if your feeling the need for a little more speed.

 

[Zackman]

Re: horsepower

Why not a 383, more torque than the 350, which is what really moves the boat?

 

[Bondo]

Re: horsepower

Why not a 383, more torque than the 350, which is what really moves the boat?

Ayuh,...

Because a long block replacement for a 305, or a 350 is about $ame co$t, or the 350 could be $omewhat Cheaper...Due to the volume...

A 383 is a Cu$tom Build that'll Co$t More....

 

[John_S]

Re: horsepower

Unless this is a 22' or greater size boat, that is on the verge of needing a BB, (not that likely given the original V6 pkg), the extra cost to build a 383 ($1000-2000) is probably not worth it. If running an alpha, will need to be gentle, too. Anything beyond a 350, will add cost over current 305 plans.

But, it would be fun to have one!


PS: I just hate it when Bondo can type faster than I.

 

[Zackman]

Re: horsepower

Agreed, if you make those assumptions... But nowhere in his post does he state he is going with a rebuilt long block nor does he say anything about price vs Hp being his major concern.

Just doing some dreaming for him.​