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TOPIC: Ciera 2855 7.4L versus 5.7L engine

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 04:03 #1

  • MysticOne
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I am looking at a 1999 and 2001 Ceira 2855 powered by a single 7.4 and 5.7 respectively. Is a 5.7 underpowered for this size boat?

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Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 04:20 #2

  • canoel
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Welcome to the forum!!
While many people are perfectly happy with the small blocks in boats this size, IMHO anything over 24 feet really should have a big block. The 7.4(454) is a heavily built engine that has much more torque in the low to mid rpm ranges, where it is needed most in a heavy cruiser.
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Joel
1987 3818 Hino 175
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Prince Rupert B.C.

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 04:22 #3

  • desuch
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in my opinion big block for a boat that length
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1988 flybridge trophy bayliner 2556 ,mercury 5.7 lit. OMC cobra out drive 76 hrs. on new package,
located in ketchikan ak,name DOMINION

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 04:25 #4

  • Special K
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Had the 5.7 in a widebody. Get the big motor IMO. The 350 was maxed.
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1990 2655 Mercruiser 5.7 Alpha One. Sold.
Current 1996 Cruisers Rogue 3175 Twin Volvo 5.7 Gi Duo Prop.

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 07:01 #5

  • JonW
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Got the 8.1 in my 2855 but it is bigger again in the block than the 7.4. Definitely get the bigger engine.
We have cars in Aus that will punch out 600hp from a 350chev but they are high maintenance.
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1999 Ciera 2855 with 496mag and Bravo3

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 13:27 #6

  • MikeACY
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I had a 1996 2855 Bravo III with the 7.4L, and now I have a 2011 2855 Bravo III with the 5.7 MPI. Is the engine u looking at MPI?
As stated the 7.4 has more torgue on the lower end.
What I noticed......
The 7.4 L more torgue, lower/mid range.
Gas mileage was lower.

5.7L
Higher RPM's to get boat up on plan. Under powered...I would say so.
Runs at higher RPM's to keep the boat on plane...BUT isn't it made to do this? Modern auto engines are running higher RPM's on todays engines then ones from the past. And most cars today are getting over 200,000 miles...older engines didn't....so is it really hurting the engine???
Gas mileage is better.

So probably the big block is better..BUT u are getting an older boat which may have a tired engine.
Is it still easy to get parts for the 7,4L? (people on this site can answer that for you)

If your boating with only 6 (to maybe 8 adults) the 5.7 will work fine.
Larger families will need the 7.4L (I carried up to 12 including small children with that engine..wouldn't do it with the 5.7)
Just my 2 cents


I
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Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 16:14 #7

  • Garchar
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Mine is the 1988 2655 wide body. I had the 460ci 330hp King Cobra. I averaged 1 mpg. I now have the VP 5.7 300 hp VP DP w/ SS F3 props. I average 2.0 mpg and am much quicker on plain. Cruise speed is about the same. I personally overall like the 5.7 better . Garchar
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GARCHAR :D
1988 2655
2009 Volvo Penta 5.7 300 hp DP F3s
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Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 16:28 #8

  • MikeMag
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7.4 definitely! For the boat size you'd be straining the small motor all too often. Can't imagine how long it would take to get mine on plane with a 5.7.

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'00 Maxum 2800 SCR 7.4 BIII

Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 16:36 #9

  • itsabowtime2
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Remember torque. Boats, especially larger heavy cruisers need torque. The 7.4 produces more than the 5.7 and a better curve as well.

Single engine, large heavy planning cruiser, 7.4 is the better choice provided the boat surveys well.
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Phil, Vicky, Ashleigh & Sydney
1998 3055 Ciera
(yes, a 1998)
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Ciera 2855 7.4L versus 5.7L engine 19 Aug 2016 22:01 #10

  • Chief Alen
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There is no replacement for displacement.
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Be good, be happy, for tomorrow is promised to no man !

1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

'86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

Ciera 2855 7.4L versus 5.7L engine 20 Aug 2016 03:01 #11

  • RGrew176
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The 7.4 hands down. No comparison with the 5.7 in that boat.

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Rick Grew

1981 Carver 3007 Aft Cabin

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West River Yacht & Cruising Club
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Ciera 2855 7.4L versus 5.7L engine 20 Aug 2016 12:38 #12

  • JonW
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Chief Alen wrote: There is no replacement for displacement.


Yep. No substitute for cubic inches.

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1999 Ciera 2855 with 496mag and Bravo3

Ciera 2855 7.4L versus 5.7L engine 20 Aug 2016 20:05 #13

  • peachypete82
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i think the 6.2 is the better compromise. I have it in mine, and a mate has the 5.7, and also been in a big block. Ive got 4 batteries in there, and a swim platform, and i tell ya, i wouldn't want much more weight in the back.

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2005 285SB. Couple mods, large stereo, lots of batteries, extended platform with Staple with BBQ and tender. Underwater LED's, enhanced lighting... penned in Pier21 on airberth.

Ciera 2855 7.4L versus 5.7L engine 21 Aug 2016 15:43 #14

  • optimist_prime
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We have the 7.4 in our 2000 2855. While we tend to cruise at lower RPM and enjoy the scenery, it's nice to have it coupled to the Bravo 3 for getting on a plane if we need to get somewhere in a hurry. Although looking at the fuel flow gauge at higher speeds makes my rear end (where my wallet resides) hurt!

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Ciera 2855 7.4L versus 5.7L engine 21 Aug 2016 16:27 #15

  • Ruffryder
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I still have my 5.7 A1G2 2855...with a small family, will be fine.
Anything more than 5-6 grown ups, yes she is underpowered.

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Joon, Kathy, Jaden & Tristan
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