Help with new carb
 

I am looking for a new carb for a stock 454 Mag in a 26ft Checkmate. I am pretty sure it has a Weber on it now. I want something that is easy to tune in and reasonable in price.

Any Suggestions?

Edelbrock is probably the easiest to tune, but I wouldn't think it is much of an upgrade over stock. The Holley 4150's are pretty good, a little harder to tune, but pretty good. How much do you want to spend and what do you want to get out of it? If you're just changing the carb I wouldn't expect much of a performance increase. Do you have the 370Hp. Mag?

This would be a good choice. You might need an adapter but it would be the best carb for your 365hp mag in my .02. Good price too.

BT

http://www.speedwake.com/newclassifi...uct=1823&cat=4

I have a barely used Edelbrock 750cfm from my BBC project (40 hours). I never made any adjustments to it out of the box. Cheap... I have too many boxes of 'stuff' !

Fixx
 

whats wrong with the one thats on their?

is it bogging and running out of fuel?

weber, is a edlobroc, is a afb they are all the same casting....either rebild yours or go holley

Why do you think you need a new carb?
Why do you think you need to tune a carb for a stock engine?
Why do you think tuning any other carb would be easier than the weber/afb style?

Fixx
 

UUUMMMM Why you quoting me,,your telling me something i already know! :) I'm just trying to figure out what he is having problem's with and why he wants to change it..I know those carbs and what problems occur.

After I run for a while and turn the engine off it takes a long time to start. I have taken it apart and cleaned and replaced gaskets. I have tied the choke open. Nothing has seemed to help.
Thanks

Fixx
 

Remove the screens that are in the needle and seats(they get plugged with crap),also it helps if you dont touch the throttle if the engine has been warmed up..it will snap the choke shut and can be a *****,i hate the electric chokes!!

Some of the webers installations have hard cold starting problems. I've never been able to completely figure it out, but I've put Qjets on a boat and the problem went away.
But if yours is a warm start issue I would make sure it's the carb that's the issue, not ignition, etc. If it's the fuel boiling out or vapor lock, you might have the same problem with a new carb.
You might have a spreadbore manifold now with a squarebore adapter. If that's the case, the most reasonably priced would be a used marine Qjet. Rebuild it, bolt it on, it shouldn't need any tuning. The only modifications would be a new hard fuel line and bend or the choke linkage rod to work without the spacer.