Mercruiser 470 Engine Spec and Mods

[thad daly]

Where can I find engine spec, especially bore and stroke for Mercreuiser 470.
Any hot rod information? Engine is 1/2 Ford 460, head, rods, pistons. Building up race engine.
Any help, thank you.

 

[tommays]

Re: Mercruiser 470 Engine Spec and Mods

Most 470 owners are just happy if it keeps running

It is a real bad pick for a HP motor

Tommays

 

[bomar76]

Re: Mercruiser 470 Engine Spec and Mods

First step would be to hang a FOR SALE sign on the boat.....
470 Race Engine, that's hillarious !!!!!

 

[Bondo]

Re: Mercruiser 470 Engine Spec and Mods

Most 470 owners are just happy if it keeps running.........

470 Race Engine, that's hillarious !!!!!

Ayuh,...............

I'd say you're Doomed to Failure before you even Start.....................

 

[Trent]

Re: Mercruiser 470 Engine Spec and Mods

Best laugh I had all day!! Thanks

 

[jastacey]

Re: Mercruiser 470 Engine Spec and Mods

I'd save your money & buy into another motor/boat combo, on paper the motor looks like a real go getter, but in reality, it idled rough, it more than likely will have a head sealing issue, and the seal in the cam area will leak, altho there is a kit to fix it, also the charging system was ... well a joke, and some parts from Mercusier are no longer being produced .... I'm assuming a hot-rod engine in a boat, or are you planing to drop the motor in a car?

 

[dbric36]

Re: Mercruiser 470 Engine Spec and Mods

I have that engine in my boat and I guess I am one of the lucky ones.

 

[thad daly]

Re: Mercruiser 470 Engine Spec and Mods

OK, let me back up just a little. The engine will not be in a boat but in a street roadster to drag race in a 4 cylinder class. So it will not be a total race set up.
At present collecting pieces. Eldebrock Alum head, 460 Header (one side), Keith Black pistons 10.0: 1 cr. Homebrew EFI system.
Crank gridle. Electric water pump.
By replacing the 460 rods(2.6" big end) with BBC tall block Rods (2.20" big end) can offset grind crank to increase stroke.
Kaas developer of the ProStock Ford heads used this engine as a test mule for head developement.There is a rumor of a dyno run just short of 600hp.
I looking for 360 to 400 hp. in a 1600 lbs car.

 

[Don S]

Re: Mercruiser 470 Engine Spec and Mods

I've got the manual here and will scan the specs and post the link to them in a little while.

 

[Don S]

Re: Mercruiser 470 Engine Spec and Mods

Ok, here are the links to them. Save them and let me know when you have them. They take up a lot of space I don't really have to spare.

EDIT:
You never came back for the info, they are gone now.

 

[nplorson]

Re: Mercruiser 470 Engine Spec and Mods

So after reading this little thread, I am thinkg I dont really want to ask the following questions for my buddy, and tell him to sell the boat he just got, but I need to know a few things to make sure he doesnt blow the thing up faster then it is going to.

So he had to pull the water pump and replace the seals in it yesterday. When we got what I said was the magneto and they were calling the harmonic ballancer out, we figured out it was a magneto. The bat was converted from the magneto to a altinator and the magnets were left on the pully thing. When we got it off, all the magnets were busted up and just stuck where ever they lay. He was told by the guy that had the boat before that they did not matter any more becouse the boat was internally ballanced. So my question are-

Is the magneto part of the harmonic ballancer?

If not, can the magnets be removed and cause no change to the function of the motor?

If I can get a quick responce on this that would be awsome. He is wanting to take the thing out today, but I dont want the motor to go to @#%$ if it is not right, and have him fix it the correct way.

Thanks much - Happy boating -

 

[HT32BSX115]

Re: Mercruiser 470 Engine Spec and Mods

Howdy,

I strongly suggest that you start another thread instead of tagging on to a 3 year old one. This one is pretty much DEAD! (I know you probably didn't notice it. I've been caught on old threads before too.)

Start a new thread on your question and put on your armor. The 470/3.7L Mercruiser usually brings out the big guns on both "sides"!



Cheers,



Rick

 

[nplorson]

Re: Mercruiser 470 Engine Spec and Mods

Thanks, I didnt notice. I am a little distracted today. Thanks again.

 

[John701]

get the manual it has all the specs for the motor it is printed by Seloc Publications number ISBN 0-89330-005-5 Mercruiser stern drive 1964 - 1982. It is a good motor and strong like anything else if you take care it will take care of you. Mine runs like a champ.