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Alex Reed
Dodge Dakota
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2/17/2004
22:02:17
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 Subject: 1989 3.9 v6 hp gains
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Message:
How much horsepower does the 3.9 have? Also how much hp does a 1993 3.9 have?
What kinds of bolt on performance parts do they make for the '89 engine to boost up the hp so it is comparable to the '93 hp rating? Ive serched around alot! and haven't been able to find anyhting.
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vern
Dodge Dakota
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2/18/2004
08:39:48
|  RE: 1989 3.9 v6 hp gains
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Message:
the 93 gets its hp from the heads and the cam has
alittle more lift 432 int,ext.at the valves
the 89 cam 373 int,400 ext. at the valves,
the 93s have a 1.6 and the 89 has a 1.5 rocker ratio.
you can put a 1.6 roller rockers on,harland sharpe
makes them around $350 plus push rods
better ignition jacobs,msd etc
electric fan
cam hughes engines.co,KRC performance etc
head work bigger valves,open up the ports,mill the heads 10-20 thousands will up the compression
a few points,20 thousands will get you close to 9.5to1
if you do the heads go with some headers
basicly whatever you can do to the old LA 318s
youi can do to these motors
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JFH
Dodge Dakota
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2/18/2004
08:44:42
| RE: 1989 3.9 v6 hp gains
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Message:
1989 3.9 V6 - 125hp
1993 3.9 V6 - 180hp
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Dianes 88 Dak
GenI
2/18/2004
13:48:06
| RE: 1989 3.9 v6 hp gains
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Message:
On my 88, I removed cat(don't know about your emmision situation)& air pump and put on MSD 6a, Blaster 2 coil and Flowmaster 40 series muff.
"WONDERFULLY BIG DIFFERANCE"
Diane's 88 Dakota [MOPAR RULES...other's... well, you know] http--dodgetrucks.org-cgi-bin-index.pluser=1054&cat=500&thumb=1
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capone
Dodge Dakota
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2/18/2004
17:45:26
| RE: 1989 3.9 v6 hp gains
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Message:
I've often wondered about all the differences between the pre-
mag and the magnum engines. As far as I know it is only the
heads. If that is true, can you put magnum heads from a newer
engine onto a pre-mag engine? Are there other differences?
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Dianes 88 Dak
GenI
2/18/2004
20:21:26
| RE: 1989 3.9 v6 hp gains
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Message:
I was told magnum heads won't bolt on our engines.
Diane's 88 Dakota [MOPAR RULES...other's... well, you know] http--dodgetrucks.org-cgi-bin-index.pluser=1054&cat=500&thumb=1
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Alex Reed
Dodge Dakota
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2/18/2004
21:20:38
| RE: 1989 3.9 v6 hp gains
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Message:
Actually the engine blocks are the same (so im told). Also, the heads do bolt up, but you need the intake, the fuel system, and computer plus lots more work. Im trying to find out how to do it.
But, this post is for easy bolt on performance. Does anybody know of any?
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sicminds
GenIII
2/18/2004
21:45:33
| RE: 1989 3.9 v6 hp gains
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Message:
the 93 has 180hp? i thought it was 175
click me
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Dianes 88 Dak
GenI
2/19/2004
04:49:02
| RE: 1989 3.9 v6 hp gains
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Message:
Alex, Let us know what all you find out. Larry could probably list everything needed.
I was told the same about the block, but that just about everything else is different and it made more since to just drop another motor in.
By the way Alex, my maiden name is Reed. Where you from?
Diane's 88 Dakota [MOPAR RULES...other's... well, you know] http--dodgetrucks.org-cgi-bin-index.pluser=1054&cat=500&thumb=1
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vern
Dodge Dakota
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2/19/2004
07:45:00
| RE: 1989 3.9 v6 hp gains
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Message:
the heads bolt on
you,ll need to have them [mag heads] drilled and tapped for the pre-mag intake to bolt on[hughes engines.com]does this
valve covers and the push rods from the mag motor
and the rocker assembly[mag ball and socket,premag
shaft]mag oil thru the push rods,pre mag thru heads
this will give you about 30-40hp
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JFH
Dodge Dakota
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2/19/2004
08:39:26
| RE: 1989 3.9 v6 hp gains
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Message:
Yes, 92 and 93 Magnums have 180 while the 94+ have 175. Not sure why but I learned that when I worked for the dealer.
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capone
Dodge Dakota
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2/20/2004
00:30:02
| RE: 1989 3.9 v6 hp gains
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Message:
I know the 92-93 318s have bigger exhause manifolds, so they
have more power. It may be the same for the 3.9L.
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gen1dak
Dodge Dakota
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2/20/2004
20:36:22
| RE: 1989 3.9 v6 hp gains
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Message:
The 3.9 and 5.2 share cam profiles, so when the 5.2's got less aggressive profiles (same lift) later in '93, the 3.9 did too...as well as the aforementioned exhaust manifolds. The Magnum heads will swap over (as mentioned, use the Magnum rockers). Use a Magnum intake. (Why would anyone use the pre-Magnum wheezer stock intake?) MP sells the appropriate length hollow pushrods intended for this swap. Make sure the lifters are oilers (I'm thinkin' they are). You can swap the water pump/timing cover but just remember the Magnum fan and water pump turn opposite of pre-Magnums, so it's either V-belt or Serpentine, with the matching parts. Since the Magnum rockers are 1.6:1, you'll automatically get a modest increase in gross cam specs over the 1.52:1 pre-Magnums. If you're gonna use the Magnum ignition system, you'll need to notch the tranny bellhousing for the crank sensor.
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89dakota3.9
Dodge Dakota
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1/29/2015
16:11:51
|  RE: 1989 3.9 v6 hp gains
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Message:
Were in gods name can i find exhaust manifolds for a 89 3.9l?
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