Building a high performance 3.9L V6 -

Go Back > Dodge Trucks > Dodge Dakota > 2nd Gen Dakota
Log In 

2nd Gen Dakota 1997 - 2004 Dakota's

Building a high performance 3.9L V6

Thread Tools Search this Thread
Old 05-25-2011, 12:00 AM
vimnjicki's Avatar
vimnjicki vimnjicki is offline
Join Date: Apr 2011
Vehicle: 1997 Dakota Club Cab 4X4 3.9L
Location: Redlands, California
Posts: 102
Default Building a high performance 3.9L V6

I know, I know. Why spend the time and money on the 3.9L V6 when a good 5.2L V8 can be had for the same money and get more performance out of it? I keep asking myself that too. One reason, at least for me is that I have the 3.9L and i dont have the V8. One question: is it true that the 3.9 is just the 5.2 with 2 cylinders cut off? Wouldnt the same .30 over boring and the pistons for it work on the V6? Zeroing the deck and working the heads for a 2.02 intake and 1.62 exhaust valves make more power on the V6 as it does on the V8? Or does it just not work the same with the smaller engine? I honestly want to know. I hope some of you guys who really know their stuff help me on this one. Thanks
Reply With Quote
Old 05-25-2011, 08:56 AM
dodgeramguy85's Avatar
dodgeramguy85 dodgeramguy85 is offline
Grand Champion
Join Date: Mar 2008
Vehicle: 02 Ram 2500 cummins
Location: Houtzdale,PA
Posts: 5,452
Michael Kokoskie

Well I cant answer your question. Ok well I can part of it lol Yes the 3.9 is a 5.2 with 2 cyl's chopped off. Anyway I look at it this way why put money into a engine that after a couple hundred bucks be as powerful as a stock v8. I see the point of some people building up what they have because in some areas the v8s are a dime a dozen. I can get a v8 at my junk yard for 175.00 and they are insurance claims so getting info on them is easy since they have all the paper work, not like they are there cause they have a blown engine. Check your local yard and craigslist. At least with most junk yards they offer a 30 day warranty on engines and trannys.

Last edited by dodgeramguy85; 05-25-2011 at 08:59 AM.
Reply With Quote
Old 02-16-2012, 10:55 PM
kemajic kemajic is offline
Registered User
Join Date: Feb 2012
Posts: 2

Well a good reason is that the V8 does not just jump in without quite a bit of work. Lots of work for a Gen 1 4WD short nose, particularly if you like a clutch fan and AC. So let's hear more about getting hp and torque out of a 3.9. Stroker kits are nonobtainum. There is a UTube video of a guy that got 400 hp. Overbored 0.090 (safely), to the 360 4.00 bore, and offset ground the crank using Honda rods to get to 270 cubes. Then lots of head and manifold work. Just geting to 200 hp would be great relative to the original 125. Trying to find the details - what rods, pistons, who did the crank work, etc. But he hasn't responded.
Reply With Quote

Similar Threads
Thread Thread Starter Forum Replies Last Post
[4th Gen : 01-07]: 2002 carvan es long crank time josh.simon Dodge Caravan 2 08-11-2015 08:31 PM
Radar Detectors for your Dodge carid Vendor Group And Special Buys 0 08-07-2015 06:20 AM
A little camshaft help please! CSDavies26 2nd Gen Ram Tech 20 08-04-2015 08:01 PM
Cruise and a/c Codyrea85 2nd Gen Dakota 4 08-01-2015 09:44 PM
exhaust question 2000 SLT Dakota jrmikucki 2nd Gen Dakota 4 07-05-2015 03:09 PM

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -4. The time now is 01:02 PM.