| From | Message |
Brian Maier
Dodge Dakota
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12/12/2002
02:33:21
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 Subject: 3.9l stroker kit
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Message:
http://strokerkits.com/3_9_chrysler_stroker.htm
I want on soooo bad.
Brian
1994 3.9l 2WD Ext Cab Dodge Dakota
JBA headers, JBA 8mm wires, Borg Warner Select Cap & Rotor, Autolite 3923, MSD 6A, Accel Super Coil, K&N FIPK, Hi-Flow Catalytic Converter, Flomaster Muffler, Robertshaw 180 T-Stat, V8 TB, S-Bolt
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Todd W
GenIII
12/12/2002
04:07:00
|  RE: 3.9l stroker kit
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Message:
Wow, so someone -does- make them. I wonder what that ups the displacement to?
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Brian Maier
Dodge Dakota
JOIN HERE
12/12/2002
11:19:16
| RE: 3.9l stroker kit
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Message:
from what others have said it sould be about 4.7L
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waterpolo
GenIII
12/12/2002
16:13:34
| RE: 3.9l stroker kit
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Message:
I wonder what the power increase is on this stroker kit horsepower and torque wise. Would be nice to see some numbers. The price on it ($3100.00) seems kind of high in my opinion. For that price a super charge seems more cost effective.
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.alex.
Dodge Dakota
JOIN HERE
12/12/2002
17:18:48
| RE: 3.9l stroker kit
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Message:
I'd be willing to bet, if you worked the heads a little bit, added some headers, a larger throttlebody and worked on the intake manifold a little bit, you could see naturally aspirated power levels that are equivalent adding a supercharger on a stock V-6. The best part? You could STILL supercharge the stroker. Imagine a really lightweight motor that makes the same power as a mildly breathed-on 360ci motor. Or imagine making the same power as a 360 motor supercharged to about 5 psi.....
Now drop that into a regular cab and go 14.0's to 13.8's. And it would still handle. And chances are, you'd still get 21 mpg.
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Jason
Dodge Dakota
JOIN HERE
12/12/2002
17:52:01
| RE: 3.9l stroker kit
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Message:
The reason the 3.9 stroker kits are so expensive is that no one make a forging besides a Billet . Thats were the major cost of the kit is at . Custom Billet cranks are very expensive, and until someone make a forging other than Billet thats the only option for a stroker crank.
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waterpolo
GenIII
12/13/2002
15:37:35
| RE: 3.9l stroker kit
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Message:
Here is the info i got from the place selling this kit for the 3.9's. Maybe if we get enough interest from people about this we can get a group buy going once they finalize the kit. Hope this info helps.
Thank You for your interest in www.strokerkits.com The 3.9 stroker kit Is
our newest stroker we have available. We are still in the process of
figuring the amount of material in the blocks so we know how far we can bore
and stroke the kits out to.
We are writing the Program for our CNC machine to make sure
there is plenty of material for cleancing in the block.
We may have jumped the gun a little advertising this kit on
the Web -site . We have had a surprising amount of interest in this kit. If
we keep getting this large amount of feed-back on the kit we may be able to
get with our Crank designers and see if we can get a different type of
Forging for the cranks besides the Billets. That way we can lower the price
on the kits. Please give us about four weeks to get are program together so
we can give you the best information possible. Once Again thank you for your
time and support.
Thanks,
Jason
E-mail: alliedmo@swbell.net
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dakdar darryl
GenII
12/13/2002
17:47:53
| RE: 3.9l stroker kit
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Message:
just some quick numbers
if they can stroke a 360 to 408
408/8 x 6=306 cubic inches?
ne1 think this would be possible
a 5 liter V6?
this is starting to sound good
FMS injectors, Autolites,clear corners,V8 TB ,
Pro Comp es9000,Airraid intake with 97 air hat, R/T Rims
S-bolt mod, relocated IAT
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Todd W
GenIII
12/13/2002
18:04:13
|  RE: 3.9l stroker kit
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Message:
I was figuring about 4.78L or so. But with a little tweaking, getting closer to 5 shouldn't be a problem. Can you imagine a 4.8L V6 running 9PSI of boost with some nice head work and a decent cam? I would have to think that engine would -move-!
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Fenris
Dodge Dakota
JOIN HERE
12/13/2002
18:14:46
| RE: 3.9l stroker kit
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Message:
Damn!! I am definately gonna keep an eye on this...
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Brian Maier
Dodge Dakota
JOIN HERE
12/13/2002
18:36:53
| RE: 3.9l stroker kit
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Message:
If you do like a .30 overbore would that help increase the cubic inches, or is that something different? Im not too familiar with all the terms.
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1fLAMED92DAK
GenII
12/13/2002
21:14:22
| RE: 3.9l stroker kit
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Message:
4.7 LITER V-6 THAT'S BIG ENOUGH. AND THATS WITH A VIRGIN BORE 3.9 WITH A 4.0 STROKE SOUNDS MIGHTY INTERESTING SHE GONNA BE A SLOW REVVING ENGINE BUT ITS GONNA MAKE LOTS OF TORQUE. hmmmmmmmmmmmmmmmmmmmm
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Todd W
GenIII
12/14/2002
01:33:30
| RE: 3.9l stroker kit
IP: Logged
Message:
She should rev pretty decent if you use light weight rods and pistons. But yeah, it won't be a quick revver. I ran some numbers in Desktop Dyno (Yeah, I know, but it -did- get close with the real 3.9L numbers, so it's a point to start)
(All numbers are Flywheel -projections-)
2000RPM - 108HP 293 Ft/bs
2500 - 133 279
3000 - 161 281
3500 - 181 272
4000 - 194 254
4500 - 193 225
5000 - 178 187
And thats just with the 4" crank, nothing else. I ran a mod with a Supercharger puching 6PSI as well, with ported heads and free-flow exhaust. The numbers were... nice.
2000 - 157 412
2500 - 202 424
3000 - 249 436
3500 - 294 441
4000 - 333 437
4500 - 370 432
5000 - 388 408
5500 - 379 362
While I don't trust the second run very much, I am interested in how the powerband is nice and smooth up to 5000RPM before dropping. No more lumpy powerband! Hm... I really wonder how close those numbers are? Getting even within 10% would rock... I think I'm going to start saving.
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Todd W
GenIII
12/14/2002
01:58:04
| RE: 3.9l stroker kit
IP: Logged
Message:
Boring the Cylinders 0.030 over will only increase displacement by about 1.8 cubic inches, which bumps it to 293 from 291.7 or so. That computes to 4.82L or so, roughly. So yeah, it does increase the displacement. I don't know if I'd go 0.030 over though, and run a lot of boost. Your thining the cylinder walls down considerably, if you want to bore it later (to remove a defect), it's going to be hard to do. Like someone said though, a 4.7L V6 is freakin huge for a V6...
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Greg555
Dodge Dakota
JOIN HERE
12/15/2002
11:52:54
| RE: 3.9l stroker kit
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Message:
now if they can jsut get the price down a lil
it'll be good to go. cause that billet crank is
about 1800 of that cost. so in time.........
Greg
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Joe E.
Dodge Dakota
JOIN HERE
12/15/2002
13:48:00
| RE: 3.9l stroker kit
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Message:
Ive checked out the kit as well and sent them mail. Recieved the same email thats listed above, give or take a few words. One question for ya tho.
The listing says 3.9L V6. Is that ALL 3.9Ls rom 87 to now, or just the mag 3.9Ls? My 1990 non mag is about to be replaced. Either with a 318 or a slightly larger mopar. But this looks intresting! Thx
Joe E.
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Dennis Lacell
Dodge Dakota
JOIN HERE
3/06/2018
17:26:58
| RE: 3.9l stroker kit
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Message:
I have a short block and complete
top to bottom 3.9 Suppoed to be 4.4
Mclaren built for IROC Billet crank
H beams and I think Ross pistons
Getting ready to put in 2000 Dakota
and see what happens ??
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dcc771
Dodge Dakota
JOIN HERE
7/05/2021
19:22:09
| RE: 3.9l stroker kit
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Message:
A few years ago I had my 1999 Dodge Dakota Sport 3.9L V6 rebuilt and bored over .030 with the appropriate rebuild kit. I have lost nearly 100 miles of fuel mileage to a tank and have absolutely NO more HP than before I had it rebuilt! I keep seeing that the bored over 3.9 displacement equals to a 4.7L??? Would I need a 4.7L PCM although then engine is a 3.9L and bored over??? Thank you for any info!!!
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Scott
Dodge Dakota
JOIN HERE
8/10/2021
20:44:26
| RE: 3.9l stroker kit
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Message:
dcc771: No, a "bored out" 3.9 cannot equal 4.7.
You may be at 215 cid which is nowhere near a 4.7
liter. You must increase the stroke to get to 4.7
or roughly 287 cid.
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dcc771
Dodge Dakota
JOIN HERE
8/10/2021
22:16:16
| RE: 3.9l stroker kit
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Message:
Scott - I appreciate the info! I am not a tear down/rebuild engine mechanic by any means! LOL... I wish I had never had it bored over and lost so much fuel mileage but it is what it is now! I thought about putting another 3.9 (non bored) engine back in my truck to get back what I lost but I think I'll just get rid of the truck instead of dumping more money into it! Thank you again for your response!
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