Forum Discussion
420green
Feb 08, 2016Explorer
carringb wrote:Lessmore wrote:
At 255 hp, I think this engine might be the Vortec 5.7 liter...or as it's popularly known the 350 V8. Think the vans might still of been getting the older SBC at this model year, rather than the newer 5.3 LS engine.
5.7L and 7.4L/8.1L engines were used through 2002. The 2003 update also resulted in the the updated powertrains (i.e. introduction of the 4.8/5.3/6.0 engines). Only the 4.3L was carried over and at some point that went away too.
What if I have the higher ratio gear ? 370 and up? Would that make a difference ? I do not know what I have off hand.
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