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Old 01-16-2015, 03:41 PM   #5
padresag
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Join Date: Feb 2008
Location: Sidney,b.c.
Posts: 4,425
Re: GMC 305 4 barrel intake

http://6066gmcguy.com/holley.html is for the 500 holley setup. you may find by google how to modify the manifold for a 4 barrel as it has been done as above but the was another showing the steps. it was by a member of 6066 . if you post the question over there , I am sure that you will get a response
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