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Old 03-12-2014, 10:47 PM   #1
67_C-30
I have a radical idea!
 
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Join Date: Jan 2005
Location: Sweet Home Alabama!
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Re: C10 Build - what's the latest/greatest swap for best mileage?

I can add that a 4.8L 5 speed will wax a 5.3L automatic every time if they are both stock. Been there, done that many times!
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‘72 C-10 SWB , 350 4bbl, TH350
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'69 GMC C3500, dump truck, 351 V6, NP435
'84 M1009 CUCV Military Blazer

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