Aftermarket Performance for 3.9L V6
#11
02-17-2008, 06:26 PM
RE: Aftermarket Performance for 3.9L V6
1.6 is the stock ratio rocker, the only difference is that the 1.6 harland sharp's have a roller tip... you might get a minimal gain. If you plan on doing a cam swap later on, get the 1.6 rockers because they wont hit the valve covers. If you dont plan on doing a cam swap get 1.7 rockers. Basically what 1.7's do is emulate having a hotter cam without actually doing a cam swap.
My stage one manifold came from www.hughesengines.com it costed me 400$ plus a 300$ core. It isnt really anything that special unless you're planning on doing a few mods like a cam swap. The only reason I have one is because I accidentally butchered my stock manifold and it wouldnt seal right. The stage one manifold has 14' runners which are about 3' shorter than stock... basically losing you low end but gaining you high end. Not good if you're looking for mileage.
As far as MPG's I cant really give you a good number, I'm not one to baby my truck and since I just did a few mods i've always got my foot in it. If i drive what i consider to be "conservative" I can get about 16 mpg city/highway mixed. I can tell you that one time i got 26 mpg while going 70 with the cruise on for about 300 miles without stopping.
My stage one manifold came from www.hughesengines.com it costed me 400$ plus a 300$ core. It isnt really anything that special unless you're planning on doing a few mods like a cam swap. The only reason I have one is because I accidentally butchered my stock manifold and it wouldnt seal right. The stage one manifold has 14' runners which are about 3' shorter than stock... basically losing you low end but gaining you high end. Not good if you're looking for mileage.
As far as MPG's I cant really give you a good number, I'm not one to baby my truck and since I just did a few mods i've always got my foot in it. If i drive what i consider to be "conservative" I can get about 16 mpg city/highway mixed. I can tell you that one time i got 26 mpg while going 70 with the cruise on for about 300 miles without stopping.
#12
02-17-2008, 11:07 PM
RE: Aftermarket Performance for 3.9L V6
Wink has some good info. Check out this post at dodgedakotas.comI think it would help also...
http://www.dodgedakotas.com/boards/v6/14757.html
http://www.dodgedakotas.com/boards/v6/14757.html
#15
02-09-2020, 03:12 PM
1993 dodge Dakota 3.9 v6 throttle body swap
putting on a v8 throttle body will not cause any problems. Just unhook the battery when you do it and that will reset the pcm. Once the pcm is reset it will relearn and adjust to the bigger airflow. You will need to change your throttle cable though because the ends are different. I ordered my throttle cable through www.dodgeparts.com it was like 30$ brand new and shipped. The last time I checked you could get the 1.7 rockers from www.summitracing.com just do a make and model search. It doesnt matter if you buy ones that are listed for the 5.2/5.9 they are the same, but you will get charged more because of the 4 extra rockers. Make sure you get the non adjustable ones unless you feel like screwing around with getting them just right forever.