On Wed, 4 Feb 2004 19:22:43 -0800 (PST), firstname.lastname@example.org (ken)
The Z is a TBI, it has 2 injectors and the setup looks like an
electronic carb. Has a round air filter on top of the engine with a
horizontal throttle plate. The W motor, also called the CPI or
Vortec, has a filter box in front of the oil filter in the engine bay,
behind the driver's headlight. There are 6 injectors on the V-6, but
they all fire at once. I believe there's a different cam in each
motor, plus the injection setup, accounting for the extra HP. Oh
yeah, the W engine has a vertical throttle plate, it sits in front of
an intake plenum that looks like a black spider.
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