Q-Jet vs Holley
 

Is there any benefit to using a square bore carb vs a spread bore. It would seem in theory at least that the square bore carb would give a more balanced charge especially considering the frequent wide open throttle position when used in boats. In automotive applications the Q-Jet shines for a variety of reasons but what about marine when economy is not the priority?

Re: Q-Jet vs Holley
 

Main reasom I can see is that you have a larger selection of intake manifolds to choose from. Both are good carbs in their own right. Also there are very few aftermarket marinized spreadbore carbs to choose from.

Re: Q-Jet vs Holley
 

Personally I'd pick a Demon :drink:

In all seriousness just changing a carburetor is not going to net you much in a marine application. Given the amount of HP it takes to make a noticeable speed difference. That being said if you're building, or modifying a performance engine then using a modular style carburetor that can be more precisely tuned would be recommended.

Re: Q-Jet vs Holley
 

The Holley (demon :p etc), do have the advantage of dual fuel bowls. A Q-jet with the one bowl could technically get sucked dry if your fuel system wasn't up to snuff. Otherwise, you prob wouldn't notice a power gain...

I'm a Q-jet fan myself, but they make more sense on cars....