Re: [OMC-Boats] What makes a marine engine, marine?

From: Lee Shuster <Lee.Shuster@...>
Date: Tue, 8 Sep 2009 16:21:07 -0600

Bill that would be true of more popular Chevy, Ford, & Mopar marine engines. There simply are NOT different mump-stick grinds (unless you roll your own custom cam profile) available for the Buick.

What would be cool is to try and substitute the even-fire 252 (4.1 L) Buick V6. I suspect/think it would bolt right in.


From: omc-boats-bounces@... [] On Behalf Of BLDFW
Sent: Tuesday, September 08, 2009 4:16 PM
To: Evinrude & Johnson Boats of the 1960's and 70's
Subject: Re: [OMC-Boats] What makes a marine engine, marine?

In addition to the brass freeze plugs, I think the only other thing they include is a lower end torque cam to assist in out of the hole shots. You gotta be sure they know it's going into a boat and that they get a marine cam installed.

Eight years ago I bought an abandoned 25' 1986 Bayliner Ciera cruiser and replaced the cracked 305 V8 with a remanufactured 350 long block. Back then it was all of $1100. I transferred the intake, valve covers, and manifolds over to the new block and miraculously the 350 chevy long block became a whole Volvo V8. Never had a problem with it.

Dallas, TX
1970 Evinrude Explorer - 155 Buick V6 - OMC Sterndrive

--- On Tue, 9/8/09, Lee Shuster <Lee.Shuster@...> wrote:

From: Lee Shuster <Lee.Shuster@...>
Subject: Re: [OMC-Boats] What makes a marine engine, marine?
To: "'Evinrude & Johnson Boats of the 1960's and 70's'" <>
Date: Tuesday, September 8, 2009, 4:45 PM

Yeah, I would have to say the BC is thinking the same way I would, JD.

Usually marine-spec blocks have brass freeze plugs, but little else is different. The marine-specific ancillary parts relate to the items BC mentions.

At least with a remanufactured long-block from a reputable builder, you know what you have and probably for less than $1600 for a Buick 225 V6.

For example:

Another known "weakness" of the Buick V6 is the timing chain. I'd make sure that area was double-checked.


From: omc-boats-bounces@... [] On Behalf Of BC Howk
Sent: Tuesday, September 08, 2009 1:58 PM
To: omc-boats@...
Subject: [OMC-Boats] What makes a marine engine, marine?

As Lee pointed out; if you ever get the blank stare from the person at the parts store when you tell them your working on a vintage 60's boat with a 225 odd fire buick V6 (used to happen to me all the time) just back up take a deep breath, reset and request the same part for a 69 jeepster and all is well!! So JD, Lee beat me to it, rather than a skylark I tell them a 69 jeepster. (I used to have one) This brings up a question that's bugged me for a long time....

What EXACTLY makes a marine long block or short block....MARINE?

OK, so anybody that's been reading this list should know that the following are special marine parts:
carburetor/flame arrestor, altenator/voltage regulator, starter, fuel pump, water pump, the thermostat housing and exhaust manifolds are clearly application specific.....

What I am talking about is the LONG BLOCK; the block itself, crankshaft, pistons/rods, heads, valves, pushrods, timing set, etc. Is there anything special about this. In other words, is there any reason why someone couldn't buy a long block for say a 69 jeepster and bolt on all of the marine specific stuff?

I recently replaced the "long Block" in my tow vehicle (89 F-250 351 windsor w/EFI), was less hassle than tearing down the old engine, figuring out how to get all the parts to a machine shop and less expensive than a rebuild anyway. It came with a 7 year 70K mile warranty, was tested and guarenteed, they dropped it off at my door less than 36 hours after ordering it and picked up the core when I was done. This was my first engine swap and after all the smog and computer stuff, I'm thinking doing something like that with that SUPER SIMPLE little V6 should be a piece of cake, once you get access to a hoist tall enough...

Any thoughts???


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