The model of Mercruiser engine can be determined by looking at the last letters of the “engine block code” that is stamped in all complete longblocks by General Motors at the time of assembly. If the serial number, and/or model decals are missing, the engine code will help to determine the engine model.
How do you decode GM engine numbers?
How to Decode the GM Engine Block
- Locate the engine block code.
- Wipe any grease or dirt off the code to make sure you read each digit correctly.
- Look at the first digit, which will be a capital letter.
- Read the next four digits in the code, which will be all numbers.
Are MerCruiser engines GM?
And where there is MerCruiser, there is GM. Even if you have V6 MerCruiser power, you are benefitting from the simple design of the small block engine because the 4.3-liter V6 is essentially a V8 with two cylinders engineered away.
Does Mercury Marine use GM engines?
Now, it seems Mercury Marine is certainly open to the idea of once again tieing the knot with GM over future Corvette engines. Mercury Marine currently offers two high-performance engines for cars: the SB4 and QC4 crate engines. The SB4 is a 7.0-liter DOHC V8 based on a GM LS block and produces 750 horsepower.
How do I tell what year my Mercruiser engine is?
Every Mercury outboard has a serial number label located on the transom bracket area of the engine. The latest serial number labels display a 2-digit number in a box at the lower right portion of the label. These digits coincide with the last two digits of the year in which the outboard was manufactured.
What kind of engine is a Mercruiser?
Cylinders. The Mercruiser 3.7 L 224 cubic inch engine is an inline 4-cylinder. It uses one cylinder head from the Ford 460 V8 and the same 4.36-inch bore as the 460.
How do I know what engine I have?
Your VIN number is your vehicle identification number and you can find your engine size by VIN number. In the series of numbers and letters, the tenth from the left denotes the model year and the eighth is the engine codes. Just tell the store clerk those two characters and you’re in business.
What kind of motor is a Mercruiser?
Cylinders. The Mercruiser 3.7 L 224 cubic inch engine is an inline 4-cylinder. It uses one cylinder head from the Ford 460 V8 and the same 4.36-inch bore as the 460. Stroke is 3.75 inches, which is shorter than the 3.85 inches of the Ford engine.
Is a 4.3 Mercruiser a GM engine?
The GM 4.3L engine has been used in Marine Applications since 1986. The 4.3L changed to the Vortec style (8 Bolt Intake Manifold) in 1996 and for Marine Applications it’s known as the Gen + version of the engine (Read More).
Where are Mercury Marine engines made?
All of the new engines are built at Mercury’s headquarters in Fond du Lac.
What size engines does MerCruiser make?
The typical Mercruiser engine is an inline 4-cylinder, V6 or V8 engine produced by General Motors and based on existing automotive engine designs. However, during the 1980s, Mercruiser designed and built an engine that was not a pre-existing automotive engine.
Where do I Find my MerCruiser serial number?
Mercruiser Engines: The serial number tag is located near the STARTER, by the flywheel housing; or, on the ROCKER ARM or FLAME ARRESTOR COVER. Mercruiser Transom Assemblies: The serial number tag is located on the INNER TRANSOM PLATE inside the boat; or, on the UPPER SWIVEL PIN.
Where is the serial number on a boat motor?
A boat serial number, also known as a Hull Identification Number or HIN, is generally found in the upper right corner of the transform when looking at the boat from astern or the back.
Who manufactures Mercruiser engines?
Mercury Marine builds 40, 50 and 60 horsepower outboard motors in Suzhou , China. Mercury also manufactures engines over 75 horsepower at its facility in Fond du Lac in Wisconsin. Mercury also makes the MerCruiser line of sterndrives (inboard/outboard drives) and inboard motors.
