1994 Chevy S-10 type of motor

1994 CHEVROLET S-10
207,056 MILES • 6 CYL • 2WD • AUTOMATIC
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TOOLGUYSK
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  • 1 POST
what is the diffrence beween a 4.3 z motor and a w motor and what does z and w mean
Oct 25, 2008 at 3:55 PM
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2CARPRO JACK
  • ✓Experienced Mechanic
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Z- is a throttle body injection engine.... W- is a CPI injection. The early W's (aluminum top intake manifold) can be swapped with the late Z's. If the W engine has a plastic top intake it is not interchangeable. The late Z and early W had balance shafts and a few other minor changes to them (heads) to get more power and efficiency and to vibrate less.
Oct 26, 2008 at 1:45 AM
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