How to Build a 505-hp Ford 351W Engine
 

Let’s spare the drama and get to the results right away. Starting with a bone-stock 351W truck engine, we bored the block 0.020-inch over, fitted KB flat-top pistons to the stock crank and rods, installed a Crane hydraulic roller cam, and reassembled the engine with GT40 cylinder heads. That combination was good for 391 hp

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