Thread: carb jet size
View Single Post
Old 02-15-2024, 12:45 PM   #3
scicala
Senior Member
 
scicala's Avatar
 
Join Date: Jun 2010
Location: Detroit suburb, MI
Posts: 3,794
Default Re: carb jet size

Quote:
Originally Posted by jimvette59 View Post
H I I have a 94 carb on a 255 merc stock engine and feel it's running to rich. I'd like to know the proper size jets. I think 54's are in there. Thanks Jim T.
I would make sure the power valve isn't leaking or ruptured before you start changing main jets. Over the years Holley 94 jet sizes varied from about #50 to #57 depending on the year and if car or truck.
The main discharge nozzle bars were changed over the years. Three different styles that I can think of.

Sal
scicala is offline   Reply With Quote