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Early Hemi swap wiring. #2833596
10/16/20 06:33 PM
10/16/20 06:33 PM
Joined: Sep 2003
Posts: 340
montana
BANDIT Offline OP
enthusiast
BANDIT  Offline OP
enthusiast

Joined: Sep 2003
Posts: 340
montana
Hi, I really recently purchased a 1969 Dodge promotional NASCAR truck. It has a 2004 5.7 and automatic out of a 2WD pick up. Truck was built 10-12 years ago and stock wiring and PCM were used. It’s kicking a bunch of codes, stalls, and tranny will just shift with what feels like first and 3rd gear( limp-in?). After you clear the codes, it runs better and shifts good for a little bit. The exhaust was redone before I got it, and there are no cats and O2 sensors are gone. Original builder stated that it had cats and sensors when built, along with stock PCM. Truck also has a mild cam, shorty headers, and what appears to be an early MP carburetor type intake with stock injectors and an adaptor to mount stock throttle body to carb base.
What I’m wondering is if there is a better way to go with wiring and PCM than chasing down all the codes and deciphering someone else’s wiring. Thanks for any help or ideas. Jim

Sorry for upside down pic, not sure how to fix that, either.

B362C7B2-1EFC-439E-9183-56A7EB58B719.jpeg
Last edited by BANDIT; 10/16/20 06:34 PM.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.50@162. 4900 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
Re: Early Hemi swap wiring. [Re: BANDIT] #2833822
10/17/20 11:47 AM
10/17/20 11:47 AM
Joined: Nov 2006
Posts: 1,949
IL
furious70 Offline
top fuel
furious70  Offline
top fuel

Joined: Nov 2006
Posts: 1,949
IL
The carb intake is worth some $ to someone else, if I were you I'd yank that, get a cheap truck intake and call hotwire, tell them the PN's of the computers you have and they should be able to reflash and/or tell you what you need to buy to make it work.


70 Sport Fury
68 Charger
69 Coronet
72 RR
Re: Early Hemi swap wiring. [Re: furious70] #2833998
10/17/20 07:11 PM
10/17/20 07:11 PM
Joined: Sep 2003
Posts: 340
montana
BANDIT Offline OP
enthusiast
BANDIT  Offline OP
enthusiast

Joined: Sep 2003
Posts: 340
montana
What’s so special about the intake? This is best pick I currently have of it.

94C3C5F0-6A75-448A-ACF2-10F271D238BB.jpeg

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.50@162. 4900 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
Re: Early Hemi swap wiring. [Re: BANDIT] #2834045
10/17/20 09:25 PM
10/17/20 09:25 PM
Joined: Jan 2012
Posts: 1,346
North America
Warhawk Offline
pro stock
Warhawk  Offline
pro stock

Joined: Jan 2012
Posts: 1,346
North America
Originally Posted by BANDIT
What’s so special about the intake? This is best pick I currently have of it.



They are low profile and not made anymore if I remember right. There are way better intakes out there now, but this intake will still sell relatively quickly if not priced to the moon.

Re: Early Hemi swap wiring. [Re: Warhawk] #2834079
10/17/20 11:36 PM
10/17/20 11:36 PM
Joined: Sep 2003
Posts: 340
montana
BANDIT Offline OP
enthusiast
BANDIT  Offline OP
enthusiast

Joined: Sep 2003
Posts: 340
montana
Thanks for info, ill probly just keep it on for now, it fits the air box. I'll call Hotwire this week. Jim


64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.50@162. 4900 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA
Re: Early Hemi swap wiring. [Re: BANDIT] #2834152
10/18/20 10:11 AM
10/18/20 10:11 AM
Joined: Sep 2003
Posts: 1,376
Toronto Ontario, Can
Glen440 Offline
pro stock
Glen440  Offline
pro stock

Joined: Sep 2003
Posts: 1,376
Toronto Ontario, Can
Thats a neat truck, I see it has a nascar style air box through the cowl.

You need to see what codes it has. If something is broken a new wiring harness won't fix it. I'm guessing it worked when it was built. If you want to use that transmission you have no choice but to use a factory computer.


87 dakota 6.1 hemi
Re: Early Hemi swap wiring. [Re: Glen440] #2834207
10/18/20 12:54 PM
10/18/20 12:54 PM
Joined: Sep 2003
Posts: 340
montana
BANDIT Offline OP
enthusiast
BANDIT  Offline OP
enthusiast

Joined: Sep 2003
Posts: 340
montana
Yes, the intake is needed to line up the air box. Most of the codes are battery temp sensor type codes. 1 is downstream O2 sensor, and then it kicked out a “low, no voltage to trans control module” code the other day. That and some other wiring issues I’ve found make me think most of the problems are wiring/ground issues.
It is a unique truck, so I bought it. My father is a NASCAR fan and retired, so I thought I’d get him something cool to drive to coffee. Gotta make it senior friendly first tho. Lol
Here is an interior shot.

004442C3-E4E9-4041-81DE-558BC724D69D.jpeg
Last edited by BANDIT; 10/18/20 01:03 PM.

64 Dodge Coronet 440. In progress
1998. Dodge Avenger. 8.50@162. 4900 DA
250” Neil and Parks Slip Joint. 7.36@183.
4600 DA






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