5.9 Magnum into '71 Dart
#1425108
04/24/13 11:37 PM
04/24/13 11:37 PM
|
Joined: Dec 2005
Posts: 2,886 Bowling Green KY / Nashville, ...
300by500
OP
master
|
OP
master
Joined: Dec 2005
Posts: 2,886
Bowling Green KY / Nashville, ...
|
I came across a good deal on a low-mile 2001 5.9 Magnum engine. I'd like to swap it into my 318 Dart, keeping the 5.9 EFI, serpentine system, A/C compressor, PS pump, and alternator. I'd also like to keep the 727 transmission that is in the car. I've heard that I'll need to use a PS pump bracket from a Ram Van, not a problem. I know the flexplate will need to be compatible with the 5.9. What flexplate and 727 converter can I use? How do I make the ECU work while keeping the 727? Will the swap require special motor mounts? If I have correct hoses made, will the A/C compressor work with the stock 1971 A/C parts that are already in the car? Are there any problems in using the 2001 alternator? Would it be possible to keep the cruise control? Car is strictly a fun cruiser, looking for dependability, a little more power than the 318, and better MPG. Any help appreciated!
|
|
|
Re: 5.9 Magnum into '71 Dart
[Re: 300by500]
#1425112
04/25/13 07:25 PM
04/25/13 07:25 PM
|
Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
|
I just did a 2001 5.9 w/ 90k miles swap on my '68 Barracuda. Full serpentine, still have to hook up A/C, narrow battery and modified battery tray, a 1998 Ram 2500 manual trans computer, full Summit exhaust w/ headers, stock 5.9 flexplate with a 727 from a member here, Milidon oil pan, Schumacher mounts, Surge tank, full-return style fuel sytem, US Radiator 4-core, SCT Tuner w/ Hemifever tunes, Hughes cam and springs, fully resealed the motor, modified the stock intake, upgraded injectors and a few other odds and ends.
It was a lot of work, but it's very much worth the effort! I'm running 3.23 suregrip and am going to upgrade to a 46RH with a lock-up converter some day.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: 5.9 Magnum into '71 Dart
[Re: jbc426]
#1425113
04/25/13 07:30 PM
04/25/13 07:30 PM
|
Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
|
Here's another shot showing the battery tray etc. The power steering hooked right up too. It runs strong, will smolder them out of first with little effort and barks second hard. Plus it gets better milage than my slant six did both around town and on the highway.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: 5.9 Magnum into '71 Dart
[Re: Andrewh]
#1425115
04/25/13 08:48 PM
04/25/13 08:48 PM
|
Joined: Mar 2007
Posts: 3,298 West Coast, USA
jbc426
master
|
master
Joined: Mar 2007
Posts: 3,298
West Coast, USA
|
Quote:
do you have a walk through on what you had to do to get the computer to work?
fully stock sensors? what about the second o2?
I bought a Hotrod harness form Hotwire Auto. It was not without a few issues, although frustrating they were relatively minor once I figured them out - a couple wires swaped on the Throttle Position Sensor and an open ground on the O2 heater circuit. The owner Chris tried to help, but because this swap is a bit dated compared to the modern Hemi swaps going on in full force right now, troubleshooting it was a little less fresh in his mind.
Overall, it's a good, nice-fitting and appearing product, and one of the sole options out there save the do-it-yourself approach. With the experience I gained, I would do my own next time but would have spent a lot more time at Pick & Pull sourcing connectors etc.
The sensors are all OE off the motor or out of Pick & Pull. Nothing special here. Be careful to mark your distributor before you yank it out. Fuel sync is an issue on these motors, and it can only be set by using an expensive scope or going to the dealer. I set mine at +4 with my cam.
The computer is from Solo PCMs in Florida. Great company, quick service and lifetime guarantee. They zero'd out the VIN, the milage and it had no key chip security, because of the year truck used.
Sean at Hemifever and his SCT Tuner is great. I recommend his tunes. The performance difference between the stock tune and the performance tune he sent me to take advantage of my non-stock computer friendly cam, injectors and intake & port matching mods is nothing short of amazing! It feels like over 50 hp difference.
I am using a single pre-cat oxygen sensor with a post-cat simulator. It works great.
This and the fuel system are the main hurdles in making the swap. Other than that, it's all basic wrenching and massaging parts.
Last edited by jbc426; 04/25/13 08:59 PM.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
|
|
|
Re: 5.9 Magnum into '71 Dart
[Re: 300by500]
#1425117
04/26/13 10:32 AM
04/26/13 10:32 AM
|
Joined: Jun 2008
Posts: 1,822 Colorado
denfireguy
top fuel
|
top fuel
Joined: Jun 2008
Posts: 1,822
Colorado
|
There is also the Megaqsuirt option. Then again, you are doing so much already, I am not sure you would want to entertain the headache of making this work as well. http://www.megasquirt.info/Craig
2014 Ram 1500 Laramie, 73 Cuda Previous mopars: 62 Valiant, 65 Fury III, 68 Fury III, 72 Satellite, 74 Satellite, 89 Acclaim, 98 Caravan, 2003 Durango Only previous Non-Mopar: Schwinn Tornado
|
|
|
Re: 5.9 Magnum into '71 Dart
[Re: gtx6970]
#1425118
04/27/13 04:07 PM
04/27/13 04:07 PM
|
Joined: Dec 2005
Posts: 2,886 Bowling Green KY / Nashville, ...
300by500
OP
master
|
OP
master
Joined: Dec 2005
Posts: 2,886
Bowling Green KY / Nashville, ...
|
Quote:
friend of mine did this very swap about a year ago on his 1972 Dart, 5.2 with TB efi, A500 OD auto. He took the stock dart harness, and a EFI truck harness and put the 2 together to make one that plugs into the original dash plug. I think his biggest hurdle was modifying the trans crossmeber and making the trans mount. But it all works. ( don't think he has the a/c hooked up yet though.
I'll get hold of him the 1st of the week and see if I can give out his email address
Please do! Thanks!
|
|
|
|
|