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Can we get a discussion going on what exactly a 4.2L buildup is?
I'm under the impression that fundamentally it's swapping the 4.2L crankshaft out of an F150 for the stock 3.8L Crankshaft.
I'm also under the impression that the blocks (3.8L and 4.2L) are the same, as are all the accessories, heads, intakes, etc.
Is the fuel delivery mechanism of the stock 3.8 sufficient, or do you need an upgraded fuel pump, bigger injectors? Do you need the 4.2L fuel rail?
What is the impact on the computer? Is the 3.8 computer the same as the 4.2? Do you need a chip, or is it advised?
Do the connecting rods and pistons need to also be swapped for any reason?
I'm under the impression that fundamentally it's swapping the 4.2L crankshaft out of an F150 for the stock 3.8L Crankshaft.
I'm also under the impression that the blocks (3.8L and 4.2L) are the same, as are all the accessories, heads, intakes, etc.
Is the fuel delivery mechanism of the stock 3.8 sufficient, or do you need an upgraded fuel pump, bigger injectors? Do you need the 4.2L fuel rail?
What is the impact on the computer? Is the 3.8 computer the same as the 4.2? Do you need a chip, or is it advised?
Do the connecting rods and pistons need to also be swapped for any reason?