On Wed, 4 Feb 2004 19:22:43 -0800 (PST), email@example.com (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.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.