Quote:
Originally Posted by Michael2000
It doesn't quite work that way. Horsepower is more determined by the bore size. Larger bores = larger valves = more air flow = more horsepower. Shorter strokes = higher rpm = more horsepower. Unfortunately, the 5.3L engine is just a 6.2L with a smaller bore.
Michael
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...and fewer pumping losses...
BTW, a 3.99" bore and the 4.8's 3.268" stroke has you @ 5.3L...and that dimension easily supports 2.05/1.59 valves...with a greater redline than the longer-stroke 6.2. And VVT "adjusts" the torque...