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big red
Dodge Dakota
JOIN HERE
1/23/2004
20:50:59
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 Subject: what is better?
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Message:
I was thinking about changing my 3.55 gears to a 3.92.
I have a couple of concerns though....
How would that affect the life of my transmission? Would it make a difference when I am hauling stuff? Would I lose some tork?
Thanks for your help.
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J and J Auto
GenII
1/25/2004
00:06:54
|  RE: what is better?
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Message:
You would get more power to the wheels with 3.91
over 3.55 and less strain on the trans to do the
same work
The motor would run about 300 rpm higher getting
you into your power band quicker giving you better
excelleration
Larry
J&J Auto
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Jim
Dodge Dakota
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1/25/2004
01:19:53
|  RE: what is better?
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Wouldn't that take a good second off your quarter mile time? What kind of time acceleration time improvements would you see?
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Tank
Dodge Dakota
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1/25/2004
07:55:06
| RE: what is better?
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Message:
Hey larry. Where could I get some of those gears big red is taking about for my 93 3.9 Magnum? (Trying to make the truck a little quicker and I'm hoping these will help). And how much am I looking at? Thanks :)
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J and J Auto
GenII
1/25/2004
13:56:56
| RE: what is better?
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Message:
You can buy new richmond 3.91 gears for around
$230 instalation kit around $100 but you cant just
bolt them in you need to set the pinion height and
preload the carrier or they will be noisy and not
last.
What I did was bought the whole rear ends with a
3.91 sure grip for $500 for both and bolted the
whole assy right in. It was cheaper than buying
2 sets of gears and installing them
Ryan has them listed on his site.
http://www.v8performance.com/gears.html
If your motor is running up to snuff I would say
around .5 on 1/4 mile time depending on the truck
some a little more some a little less, no 2 trucks
will be the same all react a little differant to
any mods you do
Larry
J&J Auto
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big red
Dodge Dakota
JOIN HERE
1/25/2004
20:58:31
| RE: what is better?
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Message:
Wow.... So, there really is not any downfall to getting the 3.91 gears over the 3.55 then. What about gas milage? I would imagine that it would go down a little since the rpm's are going up.
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