Those vehicles have a pretty low idle speed, and a relatively small crank pulley, so I generally recommend either the 170 amp or the 240 amp S series unit if you want really good output below 800 engine RPM. The 320 amp unit starts making good output at about 800 rpm engine speed. All three units are pretty much indestructible, even in hot climates. All the S series units feature our twin heavy duty internal rectifiers, oversize charge post, billet aluminum overdrive pulley, hairpin stator, and 12 massive diodes. Also, on all of our Ecotec units, we utilize a self exciting internal regulator. This means that you leave your OEM alternator plug disconnected, which bypasses the PCM control of the charging voltage. While this does result in the check battery light being on in the dash, it is the only way to get the full potential amperage, and maintain a steady charging voltage. We include a 2 year warranty, and a 1/0 gauge cable connection with every unit. You can learn more about what makes these units so special here:



Discover the 6 Phase Advantage



For select popular vehicles, we offer power programmers that allow you to bump up the engine idle speed for even better output at idle from any of the units below.



170 amp

300 rpm turn on

500 rpm - 120 amps

800 rpm - 150 amp

1200 rpm – 170 amps

$299



240 amp

500 rpm turn on

650 rpm - 100 amps

800 rpm - 140 amps

1500 rpm - 240 amps

$399

320 amp

600 rpm turn on

700 rpm - 100 amps

850 rpm - 140 amps

1800 rpm - 320 amps

$499