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Old Jun 11, 2009 | 11:36 AM
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Originally Posted by helms
underdrive pulleys will be smaller on the drive pulley (crank) and larger on the driven pulleys (alt, wp, psp, a/c, etc). if you are concerned about lack of charging due to the too much underdrive, then a bigger pulley on the alt will only make things worse.
Yeah that's what I thought, I had to think about it for a minute.
 
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Old Jun 11, 2009 | 02:04 PM
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Switching to a 170 amp alternator should stop all charging problems.
http://www.summitracing.com/parts/PWM-43311/
 
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Old Jun 11, 2009 | 03:14 PM
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dang, thats expensive!!!....there are some stock ones that are 120

http://www.oreillyauto.com/EW3/Produ...&currentPage=0
 
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Old Jun 11, 2009 | 03:35 PM
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Originally Posted by dakotas ram
dang, thats expensive!!!....there are some stock ones that are 120
My stock alternator is 136 amps.
 
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Old Jun 11, 2009 | 03:59 PM
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Or you could upgrade to a 136 amp alternator. Like this:
http://napaonline.com/MasterPages/NO...emfd+-+Premium
 
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Old Jun 11, 2009 | 04:51 PM
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thanks aim , thats some good info , i will be sure to put it on my mod lists for down the road thanks for sharing !!
 
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Old Jun 11, 2009 | 04:54 PM
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Originally Posted by PurplDodge
Or you could upgrade to a 136 amp alternator. Like this:
http://napaonline.com/MasterPages/NO...emfd+-+Premium

Or you could have your friendly SCT tuner up the idle RPM's.
 
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Old Jun 11, 2009 | 04:55 PM
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Id rather get a better alternator, and not suffer with the worse MPGs.
 
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Old Jun 11, 2009 | 04:58 PM
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will that 136 fit a v8 tho?......on bionicdodge they show you how to up your idle by tampering with your throttle body for those with OBDI....
 
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Old Jun 11, 2009 | 05:01 PM
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the 136A alt was an option on earlier model years. It's a 6 groove pulley not a 7 groove like the newer years. I believe the truck has a 140A fuse as the master so it should be able to take it.
 
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