My first problem! (Engine won't crank - lights dim)

[Avezoh]

I imagine if it were at full capacity it would provide the cranking amperage to turn it over, nonetheless, expecting a half weight ( 13 lbs. ) muscle car battery meant for a car with points, power steering, a 60 amp alternator, and little else, to fill the gap after sitting in the garage for 4 months was a touch optimistic. I'm guessing the high torque starter motor and higher output alternator on the Aveo ( though my car does not have a/c , sunroof, power windows, nor fog-lamps ) requires a high output battery, though I did note that the minimal acceptable load output is 270 amps minimum ( acceptable for recharging- not necessarily cranking an engine over ) meaning a fully charged 375 Optima should just deliver. However, I'll definitely be looking for a higher output item up the road when I look for a lightweight substitute for the stock GM battery.

Steve