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I have a chance to swap the 350 in my towing vehicle for a 400. Both have been rebuilt within 30,000-40,000 miles just not sure if its worth the headache since I will want to change some things while its out (vortec heads, cam, intake, carb, and exhaust). How much would I gain going to the 400 being both of these are stock no upgrades? What should I change if I went to the 400?
-Danny
-Danny
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