correct carb for ‘94 434A?

[brunolund]

just got this boat, and the person i bought it from said he had swapped the carb from a 305 in another boat. they were both holley 4175 carbs. the carb number i have is 80552. I have ordered the correct rebuild kit for this carb. my question is if this carb is going to perform well on this engine. I don’t know what the original carb number was, so i can’t compare jet sizes. would anyone know what the original carb would have been? or should I just run it and see how it responds?

 

[Scott Danforth]

run it and see how it responds. every carb has to be tuned for every motor its on. the tune will change with the prop, weight of the boat, etc.

 

[brunolund]

sounds good. thx. this will be my first holley rebuild. usually play with quadrajets

 

[jimmbo]

The Holley 80552 is a Holley Aftermarket Marine Carb for replacing a Q-Jet. It came from Holley with what Holley called a Universal Marine Calibration.
I have this same Carb. I had put it on my VP 5.7 back in 2007 for a few weeks. It ran fine with no issues, though I thought the Secondaries were a bit on the rich side.
I eventually put back the original Holley 2bbl back on, losing the 7mph I had gained with the 80552