quadrajet 455ho

ss3011 · 08-23-2018, 08:51 PM

There is a special system that the 1971 455 HO carb has , its called the POE system . Its purpose is to add extra fuel at WOT . You may want to get the Quadra Jet book by Cliff Ruggles , he has a section on that system . Most Q-Jets do not have that system , it doesn't meter fuel as well as having fuel go through the venturies . You say your engine only runs rich in 1st gear , are you running a Ram Air hood and air cleaner ? Which body style , GTO , Formula , or Trans Am ? Each has a different system .

Check Fig 11 https://www.gmcmi.com/wp-content/upl...ice-Manual.pdf

bob3240 · 08-23-2018, 10:14 PM

May be sloshing fuel out of the secondary metering rod holes. Do you have them sealed with tape or anything?

08-23-2018, 08:51 PM	#1
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: quadrajet 455ho There is a special system that the 1971 455 HO carb has , its called the POE system . Its purpose is to add extra fuel at WOT . You may want to get the Quadra Jet book by Cliff Ruggles , he has a section on that system . Most Q-Jets do not have that system , it doesn't meter fuel as well as having fuel go through the venturies . You say your engine only runs rich in 1st gear , are you running a Ram Air hood and air cleaner ? Which body style , GTO , Formula , or Trans Am ? Each has a different system . Check Fig 11 https://www.gmcmi.com/wp-content/upl...ice-Manual.pdf Last edited by ss3011; 08-23-2018 at 09:07 PM. Reason: Added Link

08-23-2018, 10:14 PM	#2
bob3240 Member Join Date: Jan 2009 Location: lebanon ohio Posts: 251 Likes: 3 Liked 16 Times in 5 Posts	Re: quadrajet 455ho May be sloshing fuel out of the secondary metering rod holes. Do you have them sealed with tape or anything?

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