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oldskool
Dodge Dakota
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10/06/2010
21:05:35
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 Subject: 3.9 to 5.2 or 5.9 swap
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I have a '97 SLT club cab that has a 3.9 and 5 speed I am not sure of the rear gear but I'm running 30x9.50 tires that are just a tick taller than the 235s it came with and the best fuel mileage I have been able to get is 16.5 mpg and it doesn't seem to matter how I drive it. I don't take off hard and usually cruise at 70-75 about 1900-2000 rpm. I am really getting serious about doing a 5.2 or 5.9 swap because it is gutless on hills when pulling my car trailer loaded 4000lbs. or less. I'm thinking the 5.2 or 5.9 won't be any worse on fuel milage. I bought the truck new and don't plan on parting with it now. Looking for a 5.2 5.9 buildable core or a ready to install unit.oldskooloutlaw@gmail.com
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yepp
Dodge Dakota
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10/07/2010
18:47:25
| RE: 3.9 to 5.2 or 5.9 swap
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Message:
Subject has been beat to death on here. You'll need
the computer and 2 extra injector wires. The V6
trans will not hold up long behind the 5.2......
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oldskool
Dodge Dakota
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10/07/2010
23:32:55
| RE: 3.9 to 5.2 or 5.9 swap
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Sorry for the redundant question, guess I didn't read enough of the tech questions. BTW what would the best transmission to use ? I'm wouldn't mind an automatic that would hold up to towing. Thanks Ken
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daddio
Dodge Dakota
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10/08/2010
06:59:08
| RE: 3.9 to 5.2 or 5.9 swap
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Grab an NV3500 5 spd. It was behind the v8s and '00 & up v6's.
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yea
Dodge Dakota
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10/10/2010
09:39:53
| RE: 3.9 to 5.2 or 5.9 swap
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"usually cruise at 70-75 about 1900-2000 rpm"
That is a high final ratio. Sounds like you had high
gears and the taller tires made it worst.
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George Lander
Dodge Dakota
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12/29/2018
12:37:12
| RE: 3.9 to 5.2 or 5.9 swap
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Message:
I have a 1989 Dakota convertible, I'm wanting to
swap out my 3.9 for a 5.2 or 5.9 V8. What is the
process of it. What all do I need to chang ?
Thank you for your support.
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