4.3L MERCRUISER CARBURETOR UPGRADE

[NEBS]

I have a 2001 4.3L Vortec Mercruiser with a factory 2bbl. Runs fine but does run-on sometimes after shut off. I was thinking of upgrading to a 4bbl with aluminum intake. I am wondering if I should go with Edelbrock or Holley marine carburetor? Which one is easier to tune and rejet if I had too? I have run a Holley on a Ford 289 boat motor. It was awesome wide open but a little rough at idle. Thanks

 

[wca_tim]

Edelbrock 1409 600 cfm with the appropriate jet kit (I want to say 89s...), and edelbrock performer intake. should be really close to dead on right out of the box

 

[JT Patroni]

Why don't you contact Doug Russel Marine in MA. Last year I bought the MPI complete manifold setup. It has all the injectors, throttle body and sensors. Gives a 230 hp rating. Only upgrade is the computor.

Mine will be used for an inboard set up, so I need a custom computor, but the MPI is a much safer system to use. I think the whole setup isn't that much more than a good marine 4 bbl carb, pricewise.

 

[NEBS]

The Edelbrock 1406 looks to be cheaper than the Holley by a $100. I am not looking for alot of hp just a little better throttle responce and better hole shot.

 

[wca_tim]

The Edelbrock 1406 looks to be cheaper than the Holley by a $100. I am not looking for alot of hp just a little better throttle responce and better hole shot.

1409 is a marine carb... for the carb and manifold new, you're looking at something a little over 500 I think. it's a decent combo that I have done before...

 

[ezstriper]

for what you are doing go with the edelbrock carb, easy to tune and they work well....use a pair of them on my 454's in my gibson