holley to quadrajet adapter

jay127

Seaman Apprentice
Joined
May 17, 2010
Messages
47
Would it be bad to use a aluminum adapter. I can not find one made of cast.
 

gm280

Supreme Mariner
Joined
Jun 26, 2011
Messages
14,605
Re: holley to quadrajet adapter

I that it you are talking about a Holley square bore to a Quadra-Jet spread bore plate. If so the answer is yes. You can use an aluminum plate to change from a square bore to spread bore. HOWEVER, you have to make sure that when you install that plate that all four butterflies can open AND close without any interference involved. Otherwise they will stick and leave you with a possible wide open carb...not a good thing either. So make absolutely sure you can cycle the throttle and not have the butterflies stick at any time. In fact I think that actually sell such a change over plate just for that very change... Check with Summit.
 

Redrig

Master Chief Petty Officer
Joined
Oct 13, 2009
Messages
870
Re: holley to quadrajet adapter

check for line of products from transdapt, they have some good adapters.

I used a 1 barrell to 2 barrel on an old bronco and worked great, cheap too
 

jay127

Seaman Apprentice
Joined
May 17, 2010
Messages
47
Re: holley to quadrajet adapter

Thank you both ill look into summit and transdapt
 
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