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Old June 23rd, 2017, 12:08 AM
James James is offline
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Join Date: Jun 2013
Location: Greer, SC
Truck: 1964 GMC 1500 2wd
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Default Re: Anyone with a Holley 4412 500 on a 305

I too am planning on doing this swap (don't know when) but I did notice the bore size in my intake is smaller than the 4412 throttle bore. I am going to enlarge the intake bore to match the 4412 throttle bore (if I didn't do this it would be like running a restrictor plate like Nascar has done).
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