[gemmaljh]

BASICALLY THEY ARE THE SAME.<br />BUT YOU ARE TALKING ABOUT A BIGGER CAM AND HIGHER COMMPRESSION ON THE ENGINE.<br />I WORK AT G.M. <br />PLEASE TELL ME IF I'M NOT RIGHT.<br />IF SO I'M SORRY.<br />REX

[akwala]

Gasket sets, FREEZE PLUGS and oil galley plugs are of different material. Mounting hardware is also stainless. here

[jmarclucash]

well, I am not sure that you could swap, the late 70 chevy would coincide with a late 80's early 90's mercruiser. I think that you can depending on the model of the boat. If your mercruiser has the bolts on the valve covers that don't go down the center, rather are around the edges, and the intake bolts go in at an angle, rather than straight down, then I am most certain it can be done. Mercruiser changed this, I think, in the late 80's early 90's. Take a good look at the engines for these types of similarities, and other than possible mounting bracket headaches, it should work. Let me know what you find and good luck.

[darkskiez]

Re: What's the difference between V8s, Chevy and Mercruiser

[L29Ah]

Anyone who’s owned a boat, particularly a salt water boat of any size knows that salt water is quite a hostile environment (on everything, not just the engine). There are certain things we can do when we’re working on a boat engine, things we can do to not only increase the life expectancy of the engine but cut down on future expense by preventing breakdowns from happening in the first place.

[Etherael]

Stainless steel is as good for the inside (such as engine parts) of a boat as well as on the outside. Here is a technical bulletin for you to read from AERA (Automotive Engine Rebuilders Association) on “tuliped valves”. Admittedly it’s a little technical but the bottom line is inside temperatures (combustion temperatures) in a boat engine are dramatically higher than that of a car or light truck. here

[hidden_citizen]

There is some truth to that statement up to a point. Have you ever been 30 miles out from the shoreline and you had engine trouble with your boat engine? Now go ahead and tell me to just call AAA! Other than that, when comparing marine head gaskets vs. automotive, there really is no difference.

[lanpeck5]

If I’m rebuilding my 350 marine engine, I definitely would prefer spending $80 more for a good set of stainless steel valves. The same idea goes for valve seats, it doesn’t cost that much more for for a set of good valve seats and you will ALWAYS see a much better result in terms of engine longevity.

[xxswedcc]

If you’re fixing up your boat, you might be thinking about replacing your old marine motor with a new one. As you look at the engines on the market, you might notice that automobile motors are often cheaper than marine motors. So are they interchangeable? And if not, what is the difference between marine motors and automobile motors? Here’s what you should know before you get a new motor for your boat.

[dmp1ce]

One of the most important differences to know is that marine motors are meant to withstand a constantly wet environment. This means all the parts on them can resist the corrosion that comes from being underwater. So the head gaskets, freeze plugs, valve guides, and other motor parts have to be made of corrosion resistant materials. That’s not a common requirement on car engines, though, which are meant for dry environments. This means the two types of engines are not exactly interchangeable.

[neolith2099]

First, there’s the outboard motor, which is especially popular on fishing boats and pleasure boats. The outboard motor is self-contained, with the propeller, engine, and steering control all in one unit that attaches to the back wall of the boat. This is convenient because you can lift the whole unit out of the water when you winterize your boat. This type of marine motor usually features 2 or 3 cylinders, though you can find it in V-6 and V-8 varieties, as well. Typically, this motor uses the power of jet propulsion to move the boat. [links]

[Sofox]

Larger carburetors are used to get more horsepower per cubic inch displacement. more

[piotrp]

Reverse Gear Instead of Transmission [links]

[ellyka118]

Positive Drive Clutch

[Saul]

Larger Carburetor more