I am actually planning on trying this in a full size 2004 Chevy Avalanche.
I already have the batteries mounted and the charging system in place. I am
working with NetGain and will install the EMIS module due to arrive this
week. I am getting a special ADC 8: motor with a larger comm end so I can
connect it to the transmission and then attach the output shaft to a
shortened driveshaft. The motor should be here by the end of the month so
hopefully I can have the vehicle running by the end of the year.
In my 6000lb vehicle I was not able to tell any MPG drop due to the first
300lb of batteries. I now have all 12 installed so I am carry and extra 600
lbs which will grow to 800 with the motor. Time will tell if I can get a
noticeable boost in MPG. In the test done by NetGain they have seen a
25-30% improvement in in-town driving.
Cool experiment, but what a waste. It's like trying to strap enough turbochargers and intercoolers on a V6 Mustang to get it to outrun a Mustang GT. Sure it's pretty cool once you've done it, but in the end you could just go buy the Mustang GT and have some pocket change leftover.
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"I got 350 heads on a 305 engine. I get 10 miles to the gallon. I ain't got no good intentions." -The Drive By Truckers