Thread: 428 fe with holley 850 jetting recommendations?
View Single Post
  #4 (permalink)  
Old 03-24-2022, 04:21 PM
S1965C S1965C is offline
CC Member
Visit my Photo Gallery

 
Join Date: May 2020
Cobra Make, Engine:
Posts: 93
Not Ranked     
Default
Normally you would square the jets if you block off the power valves. I'm thinking you are leaving power out of the car (on the secondaries) with an 80, and/or creating a high rpm lean condition.
Reply With Quote