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#1
10-08-2018, 09:42 PM
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23' Seacraft - 1998 PCM 454 Performance Experience?
Since this is specific to one particular engine, I wanted to start a new thread. I have come across a 1998 new old stock PCM 454 FWC MPI engine for short money (in comparison to a new Merc or Crusaer 350).
Does anyone have performance numbers, pros, cons to a 454 in a 23 SF straight inboard setup? One con is I will have to reconfigure my console. My front seat will have to be raised, along with the shelf on the inside of the console. This is a considerable amount of work, but the price of the PCM is enticing. Any thoughts, comments, concerns, input is greatly appreciated! 
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#2
10-10-2018, 11:50 AM
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All I know about 454's is that they suck a tremendous amount of gas...and they do weigh more than the small block. That is why Mercury is selling the stroker engine as a replacement for a big block. Better economy and more torque.
__________________
[SIGPIC][/SIGPIC] "If You Done It...It Ain't Braggin" my rebuild thread: http://www.classicseacraft.com/commu...ad.php?t=18594
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#4
11-14-2018, 10:28 PM
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I have a 454 in a 23 center console. Currently restoring boat, floor transom, etc. planning on putting back the 454. It's not as bad on fuel as people think. I ran a 17x17 prop on it and it manuvered very well at slow speed, plus had an insane hole shot. Cruised at 22kts, wot 35kts. Not sure of the burn rate at those speeds.
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#5
11-14-2018, 10:38 PM
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Quote:
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#6
11-28-2018, 10:17 PM
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Quote:
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#7
03-13-2019, 10:38 PM
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I did the job on the console that you described. It was not that bad. Cut the hatch rim off and leave enough material to glass to "3 inches" fasten aluminum angle to the rim and bottom. make up some closed cell foam strips but enough to spam the gap and lay it up on the inside. Remove aluminum and lay up the outside. Changed console to a command console at the same time.
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#8
11-20-2018, 11:36 AM
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Not a seacraft but my 24' Performer CC, I run 30 miles offshore not turning the motor off all day, trolling and home on 50 gallons of gas. the trick is knowing where your secondary's open up and not going there.
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#9
11-26-2018, 09:39 PM
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I have a 26' formula 242ls that weighs in close to 5000lbs. With my previous 2 engines (476ci making 425hp and 509ci making 618hp) the fuel consumption was amazingly lower than many people thought. As stated above, mark your throttle where your primaries are open as far as they can before cracking the secondaries. That boat runs a bravo out drive instead of straight like the sc will. The key to fuel efficiency is propping it to perform well at cruise with the secondaries closed. That boat averaged 3.5-4mpg at cruise depending on the amount of people on board.
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