72 Dart Swinger 3.6L Pentastar +T5

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myduster360 said:
Update: WIPERS!

Issue: The factory 2 speed wiper motor no longer fit behind the blower.

The factory 3 speed would fit but its cluster F of a circuit that's dependent on the factory switch meant it wouldn't work with the JK Wrangler stuff. So i'd have to add a dedicated circuit just to run the factory switch. I'm saving that for a backup, backup plan.

Solution: Use a 1998-2003 Dodge Van wiper motor with some modifications.

Most 70s and early 80s Dodge trucks and vans used the same old 2 speed wiper motor all the A bodies did. It wasn't exactly the same, only 90% identical with different park position, 1 mounting bolt and cranks.
Around 1985 or so they all switched to a lighter more modern design shared with Caravans and other K cars of the time.

So the mounting bracket of the post 1985 mostly fits. The lower bolt holes had to move in a bit. The upper two bolt position and gasket seal were spot on.
I got this crusty example off Ebay super cheap. Technically its from a 1998-2003 Dodge Van
View attachment 1716410707

The crank has a Ball stud on the 1998-2003 Van motor, so that needed to be changed
View attachment 1716410706

But 1998-2003 B-Van motor is special in the fact that it has a modern tapered SPLINE so the crank can be Clocked however you want. This is only zillion times easier than changing the park clock on the factory 2 and 3 speeds

View attachment 1716410722


I just ground off the pressed mushroom off the back of each stud, knocked it out and rewelded my old stud onto the new crank.
The Bigger the BLOB the better the JOB!
View attachment 1716410713


Here is all bolted up and ready to go. Well, nearly ready. I'm waiting on a new pigtail to come in.
It definitely needs a good cleanup.


View attachment 1716410704View attachment 1716410705

I jerry-rigged a temporary connection to test the function, and its all good imo

Click to expand...


This is very interesting! Any idea on the weight difference?
 
FYI, I think there is a plate that doesn't need the bottom bolt moved to fit. Maybe from a Diplomat or something?

I am 99% certain I have a similar setup on my bench that bolts on without moving the bolt hole.
 
Here's what I have.

20250530_103623.jpg


20250530_103632.jpg


20250530_103553.jpg
 
myduster360 said:
Do you have any pictures of that steering column installed in an A or B body?

I'm using this 2008 JK column.
View attachment 1716410725View attachment 1716410726
Click to expand...
Oh man, sorry I didn't reply yet. Ironically, I recently had the saginaw columns removed on both cars recently, but didn't take any pictures. I think these ones from my electrical power steering install and the original installation are all I have. I can definitely take some pictures if you need. I used the diplomat/5th Ave column mounting bracket and moved the left side mounting stud on the car, to the left.

20250110_211355.jpg


20250103_223403.jpg
 
DionR said:
FYI, I think there is a plate that doesn't need the bottom bolt moved to fit. Maybe from a Diplomat or something?

I am 99% certain I have a similar setup on my bench that bolts on without moving the bolt hole.
Click to expand...
I didn't find a plate that didn't need the the bottom bolt hole moved, but that would be sweet. Here's my.pic of the van motor and plate.om my '68 Dart

FB_IMG_1728958519579.jpg
 
UPDATE: I'll be at MoParty this year finally & plan on auto crossing it.

Other progress:
  • Installed a 3/4" Rear sway-bar from Addco to get some of the rear roll out of it.
  • Finally ran water and power to my 8year old Classic Auto Air HVAC. That means I got a working HEATER and blower fan working so windshield Defrost works. Still need a matching Non-A/C trim panel though.


1756231904599.png
1756232621858.jpeg
 
Where are you at tuning wise? Is the engine on e85 now or still on the pump gas tune?
 
myduster360 said:
UPDATE: I'll be at MoParty this year finally & plan on auto crossing it.

Other progress:
  • Installed a 3/4" Rear sway-bar from Addco to get some of the rear roll out of it.
  • Finally ran water and power to my 8year old Classic Auto Air HVAC. That means I got a working HEATER and blower fan working so windshield Defrost works. Still need a matching Non-A/C trim panel though.


View attachment 1716447015View attachment 1716447016
Click to expand...
Awesome! Can't wait to see this thing. Sign up for Grand Champion, not just autocross. Then you can autocross, drag race, and do the 3S challenge.
 
UPDATE:

MoParty was fun AF! 5 stars

Pros:
  • Awesome group of Mopar guys to hang with, especially my little bother.
  • 112mph in the 1/4 calcs out to ~315whp, 3150lb, 93oct and NA Cam timing. E85 and Blower Centerlines will add whp.
  • Placed 14th out of +70 in autocross which I'm happy with but room for improvement.

Cons:
  • The Dart has a maddening loud drone at 75-80mph(2900-3100rpm with 4.56:1) and NOT FUN. 3.73 Ford 8.8 has been acquired.
  • Only a couple little issues over 3 days: Bad Right Delphi Upstream O2, Blown Fan fuse caused an overheat
  • +212 mile range for a full tank is not great but that Right bank was on the rich side(~13.5) without a working O2.

    1757971658287.png
    1757971668744.png
13.27@112mph ain't bad either considering rock hard autox tires and inexperience leading to a crappy 60ft. Wheel hop was terrible in 1st and 2nd gear. Since I needed to drive the thing 4.5hr back home the next day, I launched it in 2nd Gear and rolled it out as smooth as I could.

I have 275/60-15 drag radials but more practice, E85 and some Dyno time to sweep the cams is needed to get well into the 12s.
1757971619879.png
 
Last edited:
myduster360 said:
UPDATE:

MoParty was fun AF! 5 stars

Pros:
  • Awesome group of Mopar guys to hang with, especially my little bother.
  • 112mph in the 1/4 calcs out to ~315whp, 3150lb, 93oct and NA Cam timing. E85 and Blower Centerlines will add whp.
  • Placed 14th out of +70 in autocross which I'm happy with but room for improvement.

Cons:
  • The Dart has a maddening loud drone at 75-80mph(2900-3100rpm with 4.56:1) and NOT FUN. 3.73 Ford 8.8 has been acquired.
  • Only a couple little issues over 3 days: Bad Right Delphi Upstream O2, Blown Fan fuse caused an overheat
  • +212 mile range for a full tank is not great but that Right bank was on the rich side(~13.5) without a working O2.

    View attachment 1716455642    View attachment 1716455643
13.27@112mph ain't bad either considering rock hard autox tires and inexperience leading to a crappy 60ft.
I have 275/60-16 drag radials but more practice is needed to get into the 12s.
View attachment 1716455640
Click to expand...
Nice! Congratulations on a good outing.
 
Low 13's I think at least keeps up with factory Hemi cars, and beats 340 cars. I wouldn't be too disappointed there.
 
myduster360 said:
UPDATE:

MoParty was fun AF! 5 stars

Pros:
  • Awesome group of Mopar guys to hang with, especially my little bother.
  • 112mph in the 1/4 calcs out to ~315whp, 3150lb, 93oct and NA Cam timing. E85 and Blower Centerlines will add whp.
  • Placed 14th out of +70 in autocross which I'm happy with but room for improvement.

Cons:
  • The Dart has a maddening loud drone at 75-80mph(2900-3100rpm with 4.56:1) and NOT FUN. 3.73 Ford 8.8 has been acquired.
  • Only a couple little issues over 3 days: Bad Right Delphi Upstream O2, Blown Fan fuse caused an overheat
  • +212 mile range for a full tank is not great but that Right bank was on the rich side(~13.5) without a working O2.

    View attachment 1716455642    View attachment 1716455643
13.27@112mph ain't bad either considering rock hard autox tires and inexperience leading to a crappy 60ft. Wheel hop was terrible in 1st and 2nd gear. Since I needed to drive the thing 4.5hr back home the next day, I rolled it out as smooth as I could.

I have 275/60-15 drag radials but more practice, E85 and some Dyno time to sweep the cams is needed to get well into the 12s.
View attachment 1716455640
Click to expand...

It was really cool to see you out there! it looked good on the autocross. I got some pictures but I had to leave on a work trip directly after so haven't had a chance to go through them.

If the drone is at a very specific level have you considered doing a J-pipe to cancel it out? I would think that would be an easy and effective route.
 

bjkadron said:
It was really cool to see you out there! it looked good on the autocross. I got some pictures but I had to leave on a work trip directly after so haven't had a chance to go through them.

If the drone is at a very specific level have you considered doing a J-pipe to cancel it out? I would think that would be an easy and effective route.
Click to expand...
Yeah its a great idea.
Its been on the list for a while now, but this trip moved it straight to #1. I've had a few 2"id U bends for a nearly 2 years now so I can fab a couple Helmholtz chambers.

IIRC the resonance spike was around 150hz, but I noticed when i finally added the tailpipe to the Right side before I left, the drone got worse. So I need to measure the resonance frequency again and recalculate the length and volume needed. Something like this:

If i run them back onto the pipe downstream, it adds support & I avoid having to weld on thin disks as caps, which can be a pina.
1758296975706.png


I also thought about integrating Charger exhaust valves, which I THINK the PCM could be made to control. I love them on my 2018 Daytona. I even thought about placing one after the X pipe to shut off one side & turn it into a Single exhaust...........But i'm not a fan adding too much complexity

1758297773520.png
 
Last edited:
myduster360 said:
UPDATE:

MoParty was fun AF! 5 stars

Pros:
  • Awesome group of Mopar guys to hang with, especially my little bother.
  • 112mph in the 1/4 calcs out to ~315whp, 3150lb, 93oct and NA Cam timing. E85 and Blower Centerlines will add whp.
  • Placed 14th out of +70 in autocross which I'm happy with but room for improvement.

Cons:
  • The Dart has a maddening loud drone at 75-80mph(2900-3100rpm with 4.56:1) and NOT FUN. 3.73 Ford 8.8 has been acquired.
  • Only a couple little issues over 3 days: Bad Right Delphi Upstream O2, Blown Fan fuse caused an overheat
  • +212 mile range for a full tank is not great but that Right bank was on the rich side(~13.5) without a working O2.

    View attachment 1716455642    View attachment 1716455643
13.27@112mph ain't bad either considering rock hard autox tires and inexperience leading to a crappy 60ft. Wheel hop was terrible in 1st and 2nd gear. Since I needed to drive the thing 4.5hr back home the next day, I rolled it out as smooth as I could.

I have 275/60-15 drag radials but more practice, E85 and some Dyno time to sweep the cams is needed to get well into the 12s.
View attachment 1716455640
Click to expand...
Great meeting you! Love the Dart!
 
myduster360 said:
Yeah its a great idea.
Its been on the list for a while now, but this trip moved it straight to #1. I've had a few 2"id U bends for a nearly 2 years now so I can fab a couple Helmholtz chambers.

IIRC the resonance spike was around 150hz, but I noticed when i finally added the tailpipe to the Right side before I left, the drone got worse. So I need to measure the resonance frequency again and recalculate the length and volume needed. Something like this:
If i run them back on to the pipe downstream, it adds support & I avoid having to weld on this disks as caps, which can be a pina.
View attachment 1716457027

I also thought about integrating Charger exhaust valves, which I THINK the PCM could be made to control. I love them on my 2018 Daytona. I even thought about placing one after the X pipe to shut off one side & turn it into a Single exhaust...........But i'm not a fan adding too much complexity

View attachment 1716457030
Click to expand...

Yeah, If it was a distinct frequency I'd try to go with the Helmholtz chambers if you like the way the exhaust sounds overall. I think the valved exhaust are cool but most of the time they are very heavy by the time you finish everything off.
 
I added this ~34" long 2" diameter pipe right at the center of the X pipe. The end cap doubles as a mounting bracket on the end.
That length was calculated to equate to around ~155hz reflective wave, which is what I measured in the car.

Apparently the J-Pipes i bought a few years ago weren't stainless so I threw some Hemi Orange engine paint on it.
1761766482280.png



1761766729765.png


Results: 60/40
The Good: The raspy, Honda-fart can, tinny racket that was unbearable during part throttle acceleration at 3000rpm is GONE!!! That was my #1 goal as it was just embarrassing. So super excited about that.

The Bad: the rather loud drone at 3000rpm/75mph is still there. A bit disappointed in that. The frequency analyzer still shows a spike of ~150-155hz on the highway.
I'm going down from 4.56:1 gear to 3.73, which will drop the 75mph RPM down in the 2500rpm range. So ill revisit this issue then and maybe add a new length of pipe
to other side.
 
Last edited:
I was tweaking the Cam timing to be a bit more Boost friendly and while i was there, I worked on the idle a bit too.
Doesn't sound half bad for a pos V6, imo.

 
Last edited:
myduster360 said:
The Bad: the rather loud drone at 3000rpm/75mph is still there. A bit disappointed in that. The frequency analyzer still shows a spike of ~150-155hz on highway.
Click to expand...
The wonderful interwebs makes it easy for y'all to share in the misery of that terrible drone I hear at 75mph/3000rpm. Lol


1762283488814.png
 
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