Mercruiser 5.0L replaced with a 5.7L

2000 5.0L replaced with a 5.7L long block.

Category:

Autos & Vehicles

Tags:

• boat

[collins32971]

did the exact same thing but cant get 350 5.7 to start timing set rebuilt 350 got 3,500 in it used everthing from 305 replaced coil cap rotor plugs wires new oil sensor the whole 9 any ideas to why not starting you can reach me at collins32971@yahoo.com

[michiganmotorz2008]

@collins32971 Give me a call @ the shop to discuss more in detail. Was your 305 EFI, TBI or Carb? 1-877-666-8679 -phil

[moosehunter74]

@michiganmotorz2008 Hi Phil, I have a 21' Bayliner Trophy with a 98 5.0L with a Bravo III. I was looking to upgrade to a 5.7L. How much inprovement would I see by doing this or its not worth it? I cruise @ 29 mpr @ 3700 and 44 mpr @ 4800 rpm WOT

[michiganmotorz2008]

@moosehunter74 Can you give me a call @ the shop please. 248-524-9600

[ABVNRML2U]

Hello Phil, Question? Do you perfer Carburator or EFI on a boat? I have heard that with the cheap gas that we have now a days it is better to have a Carburator than EFI is that true or? 

[michiganmotorz2008]

@ABVNRML2U EFI on a boat 100% Throttle response is amazing.

[meatman310]

I bought a 350 (new Long block) from you guys 87-95 style to replace my pre 86 350 in my Formula 242 LS. I can say the boat runs like a new craft . Thanx LI sound boater.

[micbaca]

what would it take to put a 4 barrel carb on a 5.0L V8 Mercruiser (GM, 305). I currently have a 2 barrel stock carb on it. The motor powers a 21' Bayliner. It has trouble getting out of the hole for skiers. I have changed props and this solves the problem, but I just wanted to ask out of curiosity.....is this possible? I have heard it will take a new intake manifold to accomodate the bolt pattern. Any thoughts would be appreciated. Would this help my gas economy?

[9986mkoh]

Did you have to change the jetting in the carb? I 'm considering doing the same on my bayliner 2655 and was looking to see what all interchanged and what had to be done. Thanks, Mike.

[collins32971]

did the exact same thing but cant get 350 5.7 to start timing set rebuilt 350 got 3,500 in it used everthing from 305 replaced coil cap rotor plugs wires new oil sensor the whole 9 any ideas to why not starting

[western1rentals]

5.0l Carb 220hp 5.7l Carb 260hp

[eaxnitro]

@micbaca Going to the 4 barrel carb (with matching intake) would mean more power and torque and help a bit with the skiers, but you will pay for it with extra fuel. What did you do for the prop? We put a 4 blade 21p vensura on our 5.0 mpi alpha 1 on our 20ft glastron and that made awesome holeshot and midrange pulling power for skiers.