Sunshadow

What's the difference between a street Holley and a marine Holley besides the j tubes and vacuum ports?

Flamingo 42

I belive everything is redisigned ( grooved and bushed throttle shaft, J-vents ect. ) so fuel cant leak into the engine compartment

brians fever

shouldnt you be working ???

getrdunn

iTrader: (7)

I have researched this much myself and the only real difference I could find was the j-tubes. When you look at all the spec on both I can't ever seem to find any difference. I do know the j-tubes can be easily converted to a street carb. As you know if the Coast Guard sees the straight tubes you will be ticketed more than likely. I could easily be missing something here however I have rebuilt several of each and yet to find any difference in the internal components. I have also run holley street carbs on marine applications and noticed absolutely no diff. Some models use a different float system for marine carbs also perhaps due to the rougher environments. Hope this helps. Basically the j-tubes just keep any excess fuel back into the carb.

rdoactive

"USCG approved" and holleys already have a habit of causing fires from leaks in the pump diaphram.
Dont even think of using or coverting a car carb, you never know what the insurance Co might do if something bad happens.

Sunshadow

Ok how about opinions between Holley and Edlebrock carbs?

fireboatpilot

Limited to 750 cfm by Eldelbrock.

[email protected]

i love edlebrock carb they dont seem as tempermental as a holly. on the other hand holly is designed for straight hall ass and in my opinion would be the best for a boat considerin the application and constant high rpms, what i sayin is if you have a race car put a holly on it, if you have a street strip cruiser put an edlebrock on it. and by the way i have auto mtive holly 750s in my boat and love them.

rdoactive

What's the application?
Keep in mind the Edwlbrock = Carter AFB = Weber used by Merc on their last carbed motors up to the 410hp, 502.
You can find used Webers for under $100 easily.

ezstriper

J-tubes and jetted up slightly for the most part....as far as the edelbrocks, as other said good std cruising carbs, use a pair of 600's on my 454's, they never see over 3800, and they work great, but for real performance holleys are much better...