Originally Posted by Dominic Toretto
I have tried searching and can't seem to again find the actual differences in those motors. I searched before through google and found some link (can't confirm if it was Ford or not) that stated that there were some serious changes which allowed the update in power. Anyone have that info or a good link here?
-Alex
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The 11-12's have a different head bolt, the 11-12s have piston oil squirters, the 13+'s do not...their pistons have a coating on them. the front engine cover is different on the newer motors as well. thats all i can think of off the top of my head.
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