Well the Port 431 gave up the ghost on Saturday either swallowed a Valve or broke a piston. It looks like I need to get moving on getting the 454's ready for the spring. If anyone needs an oddball part for a 431 let me know. I am planning on just scrapping the engines.

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Do we need a Requiem for a 431 motor ??? I just gotta chime in here - - I may never have another chance to comment on the 'Mighty 431 Lincolns'.
This indeed may be the last 431 in a club Commander. In my association over the years with Superdisc I have read all posts to the forum, plus have read the ones selected for archiving twice. I can't recall more than a handful of 431 messages over a period, To be exact, from 2000 through 2018 only 11 messages about 431 Lincolns were archived in SuperDIsc 14.0 compared to 943 messages about 427's were archived. This is a little bit skewed because the 431 Lincoln was only used sparingly in the Commander series of mid-size cruisers. Specifically, it powered the 1964 and 1965 Commander 38's. All other Commanders in this size range were powered by other engines, with the 427 being the solid majority. In the early sixties before Chris marinized the Ford 427, the 431 Lincoln was used in mid-size Connies and especially Roamers. I have personally known 3 friends with boats with these engines and they all hated the 'Mighty Lincoln'.
Frequent comments were "Makes a lot of noise, burns an ungodly amount of gas, and won't get out of it's own way !!  
Yes, yes I know there are still misguided souls out there who praise the 431, but they don't have to live with a boat powered by this slug. It was a poor design with the combustion chamber in the cylinder. The cylinder head was a flat plank. The top of the block was milled at about a 30 degree angle, Those of you who have assembled pistons into conventional engines with a ring compressor, imagine the words coming out of your mouth while using the Lincoln oddball ring compressor.
For what this motor was designed for (propelling monstrous Lincon land yachts at a leisurely pace) it was OK. In the well insulated Lincoln automobiles it was quiet and smooth. It was just when tasked with propelling mid size cruisers that the warts showed !
History Channel has / had a program called "The Last Alaskans" It was about a few people who lived in a far northern Alaskan wilderness reserve where no more occupancy or cabin permits were being issued. Based on the ages of the current permit holders, there will be no one left alive in this reserve in 100 years as it reverts to pure wilderness. Question of the day ----
Is Dave's deceased 431 the last 431 that was still running in a club Commander ??? If so, perhaps he should author a memorial to this piece of club history, sort of "A Requiem for the soul of a dead 431"  :-)

Well here is what I know.

When buying the boat I had full knowledge of the 431 issues. With 1200 hours on each I knew they were on borrowed time. I can say that the fuel burn was .8 mpg @19.2 MPH so not as bad as everyone says. Oil burn was approx. 1/2 Quart per hour. There are many purists out there that say fix them. Well unless you are footing the bill the answer is no. I knew they were tired and needed a rest. They got me 1 1/2 seasons so good for them. We plan on cruising and I will feel much better with a pair of fresh 454's and velvet drives.

   I grew up on a 35' 1957 Connie with Hercs and I know what it is like run for 2 hours fix for 3. I spent more time in the bilge fixin than I did relaxing and I enjoyed it. Having a 1965 38 with the 431's is a blast nothing like factory fresh. But now it is time to evolve to a reliable supported drive train.

Why not  upgrade  to  a  newer  engine  and transmission  combination?  

Hi Tim,

I have a pair of Crusader 454's with Velvet Drive 72's almost ready to go. I gave serious thought to Small Block 383's because I have them but Big Block is the way to go for reliability and power.

As I thought  more about  this  it seems  the  454, like the  SBC, has become  the default   standards.

Oh yes a requiem for the 431's.  Having worked for a CC dealer in the 70's and 80's in charge of CC parts. I rarely sold many parts for 430, 431 or 427 mainly water pump and ign.parts. I later sold a 42-CC conqueror with 431's and the only thing that went bad was the gearbox. My best friend's dad would only own Chris Crafts from 1952--1985. His last one was a 50Connie with 431's, He would cruise from Portland out into the Pacific every summer and cruise at 12-knots-----no problem until he sold it to a young hotrodder that blew a rod by running it to many times at 4000rpm. Up at the annual Chris Craft show every July----where I have seen about all CC's from the 20's to the 70's nicely restored. A trophy winner was a 1960--50' Connie softtop called the "lovedrive"  A "10" alloriginal down to the 431's----his wife was mad at him as he had 6-spare motors just in case. 2000 trouble free hours on the originals.  For you 427--drivers we sold a new 36-commander Sport fish with 427's last lasted 5000 hours before anything came apart.

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