what is the best carbuerator to use on a 220 conversion

[PJCREWS]

Have a freshly built conversion and having issues with it. I have a 4412 holley 2 barrell that we rebuilt.

 

[Bruce]

i ran an ma 45 aircraft carb on mine ran perfect

 

[JAMES]

Have a freshly built conversion and having issues with it. I have a 4412 holley 2 barrell that we rebuilt.

WHAT BRUCE SAID IF U HAVE THE $$ ANOTHER THING IS U MAY HAVE PROBELMS BECAUSE THE CARB ISENT RIGHT U SAID YOU REBUILT IT AND IF ITS NOT 100% THEN ITS NOT 100% .... WHERE ARE U LOCATED ?
I LOVED MY 4412 ON MY 220/470 IT RAN GREAT BUT THE CARB WAS TUNED RIGHT AND BUILT RIGHT !

 

[PJCREWS]

In labelle swfl this is the same boat that midnight rider is speaking of with jet sizes. Yea it may not be right but before i buy a new one i wanna make sure which one to use

 

[John Fenner]

500 cfm, we've run the 450 4 bbl as well it gives a bit more cruise mileage and has the secondaries to get out of trouble, but they require the rear metering plate kit to jet it accordingly.

 

[midnight rider]

John what size jets do you recommend. Also I called Holley today and they said 350 Cfm was better for 470 cu in with rpm redline of 3000. Said the 4412 500 Cfm was intended for a motor turning up to 5000. I see everyone is saying bigger jets. I m thinking that's cause of too many cfms the 500 gives. Also what do you suggest for the timing when it has dual impulse.

 

[John Fenner]

I run 73 jets, blocked power valve and 24° on my 220/470 conversion with the 8.6:1 pistons and have good response and mileage.

 

[midnight rider]

That's pretty muh the same as this one