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5.0 engine swap

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  • 5.0 engine swap

    I have a 1996 Criss craft with a 5.0 and a Volvo Penta sx cobra 3868413 outdrive, my motor needs replaced, can I swap with a 5.8 engine using this outdrive?

  • #2
    If the 5.0 is a Ford engine the only things to be sure about is to use the correct balance flywheel. The 5.0 distributor will have a different oil pump shaft. The exhaust manifolds will bolt up. Is the 5.8 a marine engine with brass core plugs? You will need a marine distributor and carburetor. The fuel pump should fit from the 5.0.
    Post a picture of what you have and what you plan on using .
    Kenner, Louisiana 1980 Donzi 18'. 2+3 6.2 MPI Alpha 1

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    • #3
      Not a VP expert but it should. Hope its a carb (FL) model

      Hey kenny nunez have any thoughts?
      94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
      95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
      07 Seadoo GTX
      Merc Adults Only VP Adults Only
      G-Dad always said "First Liar doesn't stand a chance"

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      • #4
        What happened is, I took the boat to a marine, told them to do whatever it takes to make sure boat is good for a week vacation on the lake. After one time skiing, the boat basically caught on fire.
        come to find out he did everything except change sea water pump!!!!
        So,,, I am going to change it motor, andwantto get A little more hp. Thinking I could throw in a marine 5.8.
        but I want to make sure the outdrive is ok to do that to?

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        • #5
          My 5.0 is a carb motor

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          • #6
            Your outdrive has no issue going up in HP, and the block is the same size only internals change. The issue is if all the stuff (power steering, alternator, etc) will attach without issue, and that part I'm unsure
            94 Formula 27PC Custom 509MPI MEFI3 , B3 XR
            95 Rinker 232 w/ 7.4L Carb 0F425011 B1 0F486471
            07 Seadoo GTX
            Merc Adults Only VP Adults Only
            G-Dad always said "First Liar doesn't stand a chance"

            Comment


            • #7
              Originally posted by Matt Schneider View Post
              My 5.0 is a carb motor
              and is the 5.0 a 302 ford motor (distributor at front of motor), or a 305 GM motor (distributor at back of the motor)

              the induction system is irrelevant.

              if its a ford motor and IFF its the High Output, it already has the 351 heads and cam and firing order.
              Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

              1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

              Past Boats
              1970 Wooster Hellion - Merc 9.8
              2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
              1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

              What’s behind you doesn’t matter.Enzo Ferrari

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              • #8
                What you need to do is spend some time studying a VP parts manual to make sure that the block's mounting points are the same between the 5.0 and the 5.8 so you don't have to change the bell housing or engine mounts...also check to see if they use the same coupler as well. Not sure if the intakes are the same either. You need to compare parts #s to make sure your parts will fit the 5.8.

                https://www.crowleymarine.com/johnson-evinrude/948.cfm
                this is the OMC version but the same as Volvo of that year this is for a carbed engine...

                https://www.crowleymarine.com/johnson-evinrude/1077.cfm
                this is the efi version

                I find the VP parts catalog a nightmare to negotiate unless you know the exact model # the OMC one is much easier because it is set up by model year and model #. And from '94-98 the OMC and Volvo engines were the same...same parts...etc...

                based on what I see in the catalog...it SHOULD work....

                for '96 I think the only joint venture OMC/Volvo 5.0 was a Ford...but keep in mind...your '96 boat...might have a '95 power package...make sure of what you have...
                Last edited by Lou C; August 6th, 2019, 03:17 PM.
                1988 Four Winns 200 Horizon
                4.3 OMC Cobra

                98 Jeep Grand Cherokee 4.0 Selectrac
                07 Jeep Grand Cherokee Limited 5.7 Quadradrive II

                "While air doesn't freeze....rust never sleeps"

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                • #9
                  Thank you for the info. I don't want to tear up my outdrive due to to much hp

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                  • #10
                    Same outdrive sits in front of big blocks.
                    Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

                    1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

                    Past Boats
                    1970 Wooster Hellion - Merc 9.8
                    2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
                    1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

                    What’s behind you doesn’t matter.Enzo Ferrari

                    Comment


                    • #11
                      I’ve got the 5.0 Ford. It’s a good little engine. That SX will take a 5.8 easy. It will have a different gear ratio than what came with the 5.8 though. 5.0 came with a 1.6:1 ratio and 5.8 came with a 1.51:1 ratio. There close enough that it won’t make much difference, but you will need a different prop to get all you can from that engine.

                      Mine is the HO. So heads and firing order are the same as a 351. Look on your risers. It should say HO.
                      Sparky
                      1995 Four Winns Horizon 190
                      5.0 HO
                      SX Drive

                      http://community.webshots.com/user/sparkinatorST

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                      • #12
                        Ok, I'll look. And I will post what prop I have and let you guys tell me what prop would be best for skiing and tubing.

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                        • #13
                          Next is, where would you buy the motor?

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                          • #14
                            Originally posted by Matt Schneider View Post
                            Next is, where would you buy the motor?
                            I would go thru my local engine builder
                            Cheesehead boating the Gulf Coast of FLA 27.51° N, 82.53° W

                            1988 Cruisers Rogue 2420 -VP 290 DP now powered by custom 468 - https://forums.iboats.com/forum/owner...988-rogue-2420

                            Past Boats
                            1970 Wooster Hellion - Merc 9.8
                            2002 SeaRay 190BR - 5.0 - A1G2 - "Cheeseheads in Paradise"
                            1984 Avanti 170DLI -3.0 stringer- "Ship Happens"

                            What’s behind you doesn’t matter.Enzo Ferrari

                            Comment


                            • #15
                              Sign up today
                              I did this exact same job on my boat. Was a 5.0 Ford, swapped in a Mercruiser 350 Mag MPI.
                              What I had to change:
                              Coupler
                              Bellows hoses
                              Longer power steering pressure hose.

                              I think that was it. The Merc has the dry fit exhaust risers, which I really like. I added 4.5" riser extensions.
                              Aftermarket parts appear to be more available for Mercruiser. Overall it worked very well.



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