Mercruiser Marine
At 350marineengines.com we can provide our customers with the
highest quality rebuilt Mercruiser engine; an engine that they can
trust to deliver them power and increased fuel efficiency. How do we
secure this high quality standard? Through our commitment to quality
control through every step in the remanufacturing process. It begins
with our skilled team of technicians and continues through our
meticulous inspection and testing. Finally, we stand solidly behind our
work with our superior 7 years, 500 hours warranty - a warranty leader
in the industry. In fact, our experience in the field has made us a
leader in the industry on many counts. We have listened to our
customers over the years; we know what is important to them, and what
makes for a dependable and powerful Mercruiser engine. More than
anything we have learned how to achieve this quality without our
customers having to sacrifice the affordability that is also important
to them.

At 350marineengines.com our service extends beyond rebuilding
of the Mercruiser engine; we will install the engine for our customers
as well. This combined experience of rebuilding and installation allows
us to be most effective in our roles as we can help our customers
determine what boat engines will work best for them - whether it’s a
4.3 Mercruiser, a 5.7 Mercruiser, or a 7.4 Mercruiser.
We have listed our selection of Mercruiser engines
below. If you would like a comprehensive listing of marine engines or
to get a cost for installation please call us at 1-877-630-2628.
454 Magnum Mercruiser Engine
Includes approximately 425 horsepower with approximately 375 horsepower
at the prop. The 454 Magnum includes dome pistons that increase torque
and horsepower. The 454 Magnum that includes 2" intake ports has
increased torque over the 454 Magnum that includes 2 1/2" intake ports.
Our tests have shown that the 454 Magnum Mercruiser engine is worth
the extra money and offers a great return on investment. For RPMs over
4,000, large intake ports are best. RPMs of 1,500 to 4,500 get better
power with smaller intake ports. Those who are replacing a 454
Chevy marine engine and desire to get more power while reducing fuel
usage, should install the 454 Magnum engine.
350 Magnum Mercruiser Engine
Features approximately 300 prop shaft horsepower at 4,600 to
5,000 RPMs. If you are replacing a 5.0, 5.7, 305, and 350 marine
engines the 350 Magnum is a great choice. Does not allow for
converting; the 350 Magnum engine will utilize all of the outside parts
of your old 305 and 350 engine. However, all other parts are the same,
including the oil pan, timing cover, carburetor, valve covers,
distributor, exhaust manifolds, balancer, and flywheel. Testing here at
our factory has concluded that no adjustments are necessary to your
computer.
4.3 Mercruiser Engine
At Marine Engines we build each 4.3 Mercruiser engine with 50
more horsepower; something that we have discovered, through our
installation experience and experimentation with camshafts and pistons,
gives the engine significantly more power, at the same time allowing
it to consume far less fuel.
Tried and True Engines
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