intake question
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Posting Guru
Joined: Mar 2006
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From: fargo, nd
intake question
ok... heres my question... i know when you increase displacement your cam acts like its smaller... rpm range goes down... but does displacement have the same effect on intake manifolds? reason i ask is im building a 545 and to run propane i need a dual quad intake... no low rise 460 intake available so i have to go high rise... the lowest high rise intake ive found is the blue thunder so thats what im getting... but will it still idle decent and have good low end power? ill be running dual 425 impcos- engine needs about 900 cfm flow to do 5000 rpm according to the calculator i used
Postmaster
Joined: Nov 2001
Posts: 3,351
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From: Escondido, CA
You should be able to use an edelbrock dual plan for a low rise. I don't know much about propane mind you. Also have you looked at the dual port or port-o-sonic manifolds? They should be able to give you the dual plane function you are looking for.
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Posting Guru
Joined: Mar 2006
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From: fargo, nd
dual quad not dual plane
i was asking about a dual 4 barrel intake... not a dual plane intake... and edelbrock as far as i know doesnt make one for a 460... if i didnt have to have 2 4barrel carbs i could just get any old intake... but the only propane carb i know of that can flow 900+cfm is the impco 600d... and theyre only for industrial applications... no throttle control... so im stuck with a dual quad high rise intake... but i am building the 545 otherwise for low end power... im asking how much a high rise intake will screw up my build
