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Mikes94Dakota
Dodge Dakota
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3/29/2004
15:18:12
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 Subject: Larry...Underdrive pulleys!!
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Would you reccomend me getting the underdrive pulleys from truckperformance or krcperformance and how much difference will i feel? I have a 94 3.9 auto w/3.55 peg!
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does it
Dodge Dakota
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3/29/2004
17:07:41
| RE: Larry...Underdrive pulleys!!
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Message:
does it really matter where they are from? heck even jegs and summit sells them! you will have a bit more power all through the power band getting to the road , maybe 10 hp at top end or thereabouts.
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Mikes94Dakota
Dodge Dakota
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3/29/2004
17:19:03
| RE: Larry...Underdrive pulleys!!
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i dont care, you're not Larry damnit
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Mikes94Dakota
Dodge Dakota
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3/29/2004
17:29:07
| RE: Larry...Underdrive pulleys!!
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........AND someone is using my name...but any poo....thanks anyway....i Just wanted some professional advice. And Larry has helped me in the past with a few things and I trust him....Fazdak or Intensedak or someone of that nature could help out with my situation...!
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IntenseDak39
*GenIII*
3/29/2004
17:39:13
| RE: Larry...Underdrive pulleys!!
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Message:
i've never tried the pullies.. but have only heard good things about them.
but if you have like listening to music loud and have a big amp or what not, dont replace the alt. pulley.
also, i believe APS is the only person who makes em.. maybe someone else too... not sure. Who you buy from just depends on what kinda service you want.
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Mikes94Dakota
Dodge Dakota
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3/29/2004
17:48:41
| RE: Larry...Underdrive pulleys!!
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Message:
Thanks intense...I also hear that if you want a lil more power out of this motor go with the crank pulley....but if you get crank and alt pulleys then your truck wont charge in bumper to bu,per traffic ...so is there a noticeable difference in the crank pulley or not...its $68 at truck[performance.com
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Mikes94Dakota
Dodge Dakota
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3/29/2004
17:51:20
| RE: Larry...Underdrive pulleys!!
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I have also heard of getting a 6 rib belt...what does this do and if i decide to get an underdrive crank pulley what size difference will the belt be and/or will i have to get a new one?
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IntenseDak39
*GenIII*
3/29/2004
17:53:04
| RE: Larry...Underdrive pulleys!!
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Message:
6 rib will only make it cost less.
if you really want to make some improvement, get a belt that bypasses the a/c
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Mikes94Dakota
Dodge Dakota
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3/29/2004
17:54:59
| RE: Larry...Underdrive pulleys!!
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Message:
Hey intense....so does 6 rib mean jack crap diddly poop in another words? What kind of belt will i need for this mod?
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IntenseDak39
*GenIII*
3/29/2004
18:02:15
| RE: Larry...Underdrive pulleys!!
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Message:
well.. when i looked em up.. seven rib belts are more rare and cost a lot more.
My short belt i had on my 3.9 was like $45
just measure around without going to the a/c and check the length... then take that to an autoparts store.
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Steve Baldwin
Dodge Dakota
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3/29/2004
18:44:36
| RE: Larry...Underdrive pulleys!!
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If I recall, If you use bothe the crank pulley and the alternator pulley, You will need a 6 rib 725 (72.5 inches) and if you only run the crank pulley like I do, Then it is a 6 rib 750 (75 inches)
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Mikes94Dakota
Dodge Dakota
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3/29/2004
19:25:48
| RE: Larry...Underdrive pulleys!!
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Message:
Thanks...i look into it....anybody else?
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daddio
Dodge Dakota
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3/30/2004
08:44:33
| RE: Larry...Underdrive pulleys!!
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Message:
you will notice just the crank pulley change. i've had mine for a few months ('00 QC Sport 3.9 5 spd) no probs @ all. when you buy the pulley the instructions should give the correct belt number.
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J and J Auto
GenII
3/30/2004
14:39:59
| RE: Larry...Underdrive pulleys!!
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Message:
Take the big clutch fan off and get an elec fan
2400 to 2800 cfm on a good flexolite thermo
control.
Now most guys just do the crank pully but you can
do all 3 as long as you don't let the truck sit
and idle to long or stop and go traffic all day
long it will drain the batt, and be sure your batt
is up to snuff.
you can also go shorter and bypass A/C
Will you notice it YES really helps off idle and
low end power not turning the big fan and just
the crank pully is very noticeable improvement
Larry
J&J Auto
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Mikes94Dakota
Dodge Dakota
JOIN HERE
3/30/2004
14:51:02
| RE: Larry...Underdrive pulleys!!
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Message:
I was talking to my dad and he said the way you can tell if there is a difference in power with a crank pulley mod is about the same is unplugging your alternator and with this...it should be about the same amount of power increase...but he also said with the just crank pulley it wont make much difference...thats why there are NO mopar performance underdrive pulleys...because there is no need and that a shift kit would be better i had to choose between the two....il let him see your post larry and see what he says...but if the ac isnt on then the belt has no real problem turning the ac with the clutch on cause it is off.
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slow97dakota
Dodge Dakota
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3/30/2004
17:18:35
| RE: Larry...Underdrive pulleys!!
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Message:
i love my under drive pulleys, i have the crank and alt pulley. helped out my lowend. i have a belt that i picked up and was not able to use. but if u get the crank and alt pulley u could use it, ill sell it to ya if u want. the reason i could not use it is that i forgot i had no ac when i bought the belt and the place would not take it back. the belt costed 45 ill let it go for 25+ what ever shippin would b. email me if u want it
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