April 20th, 2020, 05:22 PM
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Senior Member
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Join Date: Jan 2013
Location: New Orleans, LA
Truck: 1966 GMC 1000 series fenderside
Posts: 203
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 130
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Re: Engine swap on 65 GMC 2500 305 V6
Attached are the two carb bases for magnum and non magnum. The magnum trapezoid base is marked 60053 in the picture. If you have the manifolds for the 351, then the carburetor might be the only thing that wouldn't swap from 305 to your 351 without an adapter plate.
Hope that helps.
Regards
Steve
New Orleans.
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