Hilborn fi questions
#1
Junior Member
APPRENTICE
Thread Starter
Join Date: Mar 2003
Posts: 10
Hilborn fi questions
i race a 350 buick. since nobody makes hi-perf intakes, so i make my own. i have made a single plane and a s/charger intake so far. i looking to build a fi unit. i will use a sbc unit for this project.
but the question is, with all the different barrel sizes, how do i know which one to use? and how do i figure nozzle sizes?
thanks
john
but the question is, with all the different barrel sizes, how do i know which one to use? and how do i figure nozzle sizes?
thanks
john
#4
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
Depending on the size of the engine, i and most of my friends run 2 7/16" from 350" to 434", i personally run 2 7/16" on alcohol and #18 AS nozzles as do most everone i know. I don't see any reason to run larger than 2 7/16" with 23* heads, because most of them won't flow more than 315 CFM which 2 7/16" can easly handle.
Zip.
Zip.