When did GM stop making 454 marine engines?

When did GM stop making 454 marine engines?

There are a variety of different challenges involved with Big Block V8 engine re-powers today since GM and all of the Marine Engine manufacturers quit offering complete turnkey 454 engines several years ago. Now to complicate that even further trhow in the fact that the 496 C.I.D. V8’s were discontinued from GM in 2010 and things really get tough.

Is the 496 engine the same as the 454?

The 496 engine is about 1″- 1-1/2″ wider, 1-1/2″ taller. The engine protrudes to the front about 1″ further overall but this is due to the longer water pump shaft and not the actual engine block itself. The flywheel/bell housing mounting and location is exactly the same. The engine mounting footprint and mounts are exactly the same.

What to consider when replacing a MerCruiser 454 engine?

With this in mind, the main things to consider when replacing a 454/502 engine with the 8.1L are:

What kind of engine is a 454 long block?

The engine does not include intake, flywheel, or water pump. 454 MAG 385 hp 1987-2002 NEW Longblock…. (Read More) This is the best way to distinguish it from the other 7.4L engines is that it has rectangular port heads and a high performance camshaft. They are the same heads that are used in the 8.2L 502 cid engine.

What kind of engine does a marine 454 long block have?

This Power-Pack is the perfect repower option for pre-1992 base 7.4L or 502 applications or for even for 1992 and up applications looking to upgrade from a 310/330HP 7.4L to the higher HP and higher torque 502 MAG 415 HP engine. Equipped with a complete fuel system as well as the ignition system.

What kind of engine is the 454 7.4?

454 MAG 385 hp 1987-2002 NEW Longblock…. (Read More) This is the best way to distinguish it from the other 7.4L engines is that it has rectangular port heads and a high performance camshaft. They are the same heads that are used in the 8.2L 502 cid engine.

When did General Motors replace the 454 engine?

Here’s a little background and direction that will hopefully help you with your repower project. In 2001 General Motors displaced the 7.4L Base (310 Hp, 330 Hp), 454 Mag (385 Hp, 392 Hp), and 502 (415 Hp) engines to make way for the newer 496 Cu-In (8.1L) engine platform.

With this in mind, the main things to consider when replacing a 454/502 engine with the 8.1L are: