What kind of block would match up. with a o.m.c lower unit right now the boat has a 3.0 181 cubic inch?

Question

need to replace blowed motor on a 21 ft bayliner

Answer 1

are you asking if you can up power this with say a v8 engine? the answer is no the drive has a gear ratio designed for that size engine. the intermediate housing would also need parts exchanged unless you go thru a lot of changes its best to stay within the hp range of the original drive ps there are several marine rebuilders who stock that engine rebuilt.

Answer 2

check- marine engines.com.

Answer 3

The 3.0 Liter Block is produced by GM. It is used heavily in Marine (boats), industrial (fork lifts), and aircraft taxi equipment. This block was never used in a non commercial automotive application.

To find a replacement block you will need to go to a marine dealer or machine shop familiar with boat engines. Several companies and re-manufacturing houses do sell versions of this motor but they are fairly expensive for their size.

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