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Our new, complete, offshore 320
Merc. I/O Direct replacement engine
 WOT RPM 4800-5200
(idle rpm 650)
87 octane
Standard features include
2 Year limited warranty  (5 year exhaust)

New cast steel crank (one piece rear main, internally balanced)
New connecting rods (balanced rotating assy)  
New Hypereutectic coated pistons (9.3:1CR)
New Custom grind HYD. roller cam and lifters
New Aluminum heads
2.02 int. 1.60ex.
( inconel exhaust valves)
New hardened push rods
New Vortec aluminum intake.
New 750 cfm Marine Carb.
New marine elec. fuel pump
New flywheel
(14") and 8" damper
New Stainless steel roller rockers
New Stainless steel fasteners
New flame arrester
New Marine HEI. ignition System
New raw water pump
(bravo only)
New rubberized oil pan
New light weight billet pulleys
(won't rust)
stainless steel header/manifolds
New starter (high torque reduction gear)
New alt. (78 amp)
New freshwater cooling
New motor mts.
New ARP bolts & studs
New high pressure oil pump
New one piece stainless steel header/manifolds
Also available in + 3" or + 6" rise
(shift bracket included)
New quick drain oil
New Standard 9 pin wiring harness
Epoxy paint with chip resistant hard coat clear
Low oil pressure warning and shut down, with
high temp alarm.
Iridium Spark Plugs
New HD engine coupling
New Fuel/Water Separator
New custom cowling
New aluminum valve covers
(won't rust)
Engines setup for Alpha or Bravo (direct replacement)
These light weight  (over 290lbs lighter than most others) fuel sipping, smooth running (internal balanced),
powerful, Blueprinted engines are designed for sport boats, runabouts,
ski boats, cruisers,or
sportfish that desire more in the performance department. Hundreds of pounds lighter than
most other small blocks (light weight saves fuel), the
OFFSHORE 320 actually provides
comparable performance to the old 454s. The one piece
stainless steel header provides
optimum performance and efficiency, while eliminating the chance of riser to manifold gasket
leaks and potential engine failure. Their compact size and high power-to-weight ratio make
them an
extremely versatile engine. Also available for inboard installations.

The
Light weight, low maintenance Offshore 320 is the ideal replacement engine           
for the 5.0L/5.7L family cruiser or runabout. This engine is without a doubt, one of         
the finest, trouble free, low maintenance replacement engines you can buy for your     
5.0/5.7L powered boat!

* Estimated prop shaft HP w/free flowing exhaust, 325hp.
Flywheel horse power as tested 345 @ 5200.  Small tube headers w/mufflers

Some bracket's reclaimed (IE: motor mount legs, P.S. Bracket.)

Specifications may change without notice, due to constant testing and improvements being made.
.
These engines require no more maintenance than any other marine engine, and are easy and inexpensive to
repair. Unlike many of todays "failure prone", difficult to have diagnosed, and expensive to repair injected engines.
                                          (oil change every 50 hrs, major tune up 500hrs)
We carry a full line of marine engines,new marine engines,rebuilt marine
engines,mercruiser engines,performance marine engines,offshore 320,freshwater
cooling,replacement marine engines,low maintenance engines
These light weight powerful Blueprinted engines are designed for sport boats, runabouts,
ski boats
, cruisers,or sportfish that desire more in the performance department, but may not
have the room to handle a big-block's larger size or weight. Smaller and lighter than
displacement big blocks and most small blocks, the
OFFSHORE 420 actually provides
comparable performance to the 496 Mag , and there compact size and high power-to-weight
ratio make them an
extremely versatile engine.
The low maintenance
Offshore 420 is the power of choice.

*
Estimated prop shaft HP w/free flowing exhaust, 390hp.
Flywheel horse power as tested 426 @ 5200.  small tube headers w/mufflers

Specifications may change with out notice, due to constant testing and improvements being made.
.
These engines require no more maintenance than any other marine engine.
(oil change every 50 hrs, tune up 500hrs)
Counter
SPECIAL PRICING ON
New alpha drive
or
captains call system
with purchase of engine.
SPECIAL PRICING ON
New alpha drive
or
captains call system
with purchase of engine.
ALPHA
Click on images
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engines,performance marine engines,offshore 320,freshwater
cooling,replacement marine engines,low maintenance
engines,mercruiser replacement engines.mercruisre 5.7
With new alpha gen 1 drive
$8999.00 + shipping.
Bravo
With captains call
transom exit
$9350 + shipping