johntkha

Hello Everyone,

Last summer I had a cracked block on my Marine Power 454. The casting number on the cracked block is 10114182. I have rectangle port heads on that cracked block which is 14097088.

I found a guy selling his Mercruiser 454 complete engine and the casting numbers on his block is 10237297. He said he has oval port heads on his block though. Anyone know what the horsepower rating on this engine with the oval port is? Also, if I were to put my old rectangle port heads 14097088 on this block 10237297, would it work with no problems? The last thing I want is a slower engine on my boat.

Any help is greatly appreciated.

John

jeffswav

Welcome to the site !! Can you get some more details about the engine. Mainly if it has cast or forged internals and what type of pistons. You have to match the size of the combustion chamber of the head to the piston to get the desired comp ratio. Get the casting numbers off the heads, if they are large oval heads they may work for you.

eliminatethis

If the blocks still have the merc. tag on them you can call merc and they can tell you what exactly is in each block

johntkha

Thanks for the quick replies. I'll have to call Mercruiser on Monday to get the details on this engine. I spoke with someone at Teague Marine and they said the 088 heads would fit perfect with the Gen VI block. Of course I gotta buy the Felpro gaskets which is a chunk of money out of my pockets. Looks like I'm gonna pick up this Mercruiser engine tomorrow.

John

jeffswav

There is a lot more to it than just bolting on. You need to know what pistons you have to set it up correctly.