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7.3 swap in place of a 6.9

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BCGE201

7.3 swap in place of a 6.9

In the process of brining back our Bullnose to life. Couldn't find a replacement 6.9 so in the process of installing an 89 7.3. Looking for some help adapting from the 6.9 truck harness with 7 wires to the 7.3 engine harness with 12 wires. Been searching all over for information but not finding everything I need to identify the wires and which ones are needed. 85 has a manual and the 7.3 had an auto. Sticking with the manual. Thanks in advance

ArdWrknTrk

Re: 7.3 swap in place of a 6.9

Administrator

The 85 EVTM is here: https://www.garysgaragemahal.com/1985-evtm.html

I kinda know PowerStroke turbos from the '90's, but don't have any book that shows a '89 IDI wiring harness.
Gary? Or Jonathan??

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Gary Lewis

Re: 7.3 swap in place of a 6.9

Administrator

Sorry, but I don't have anything that shows that wiring. I jump from 86 to 96 if I remember correctly.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

ArdWrknTrk

Re: 7.3 swap in place of a 6.9

Administrator

In reply to this post by BCGE201

You need to buy an '89 Pickup & Bronco EVTM.
You can find them used, on eBay for around $25 delivered.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Ford F834

Re: 7.3 swap in place of a 6.9

Administrator

In reply to this post by BCGE201

I don’t know if these help at all, but I think these were for a bricknose 7.3

What shape is your 6.9 engine harness? Are you going to run the 7.3 glow plug controller and 6v plugs or are you going to run the 6.9 controller and 12v plugs? The main thing is don’t mix and match.

The 7.3 does actually have a port on the driver side head (plugged) that will accept a 6.9 controller. I would strongly urge that you buy a new, solid state 6.9 controller if you go this route to keep the 12v spade connector ZD1 glow plugs.

https://www.accuratediesel.com/shop/60.html

If your 6.9 harness is still serviceable but you want to run 6v plugs and controller this video will help:
https://m.youtube.com/watch?v=-tRCcKoOi3M

Hopefully there is enough information here for three options and one of them can work for you.

SHORT BED 4-DOOR DIESEL: 1986 F350 4x4 under construction-- 7.3 IDIT ZF5+GVOD

STRAIGHT SIX 4X4: 1981 F150 2wd to 4x4-- 300 I6 close ratio diesel T19, hydroboost brakes, Saginaw steering

BIG F: 1995 F-Superduty under construction— converting to 6.9L IDI diesel ZF5+DNE2

ArdWrknTrk

Re: 7.3 swap in place of a 6.9

Administrator

Thank you Jonathan!

I knew you'd have useful information to contribute..

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

viven44

Re: 7.3 swap in place of a 6.9

In reply to this post by ArdWrknTrk

Vivek

- BB 2WD - 1984 F350 RWD 460/C6
- 1978 Bronco with a 460 from an 86 Bullnose/C6

ArdWrknTrk

Re: 7.3 swap in place of a 6.9

Administrator

Thank you for sharing your '89 EVTM Vivek!

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

viven44

Re: 7.3 swap in place of a 6.9

I can share more, if anything else is needed from the table of contents

Vivek

- BB 2WD - 1984 F350 RWD 460/C6
- 1978 Bronco with a 460 from an 86 Bullnose/C6

ArdWrknTrk

Re: 7.3 swap in place of a 6.9

Administrator

Let's see what Nick has to say.. (ask??)

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

BCGE201

Re: 7.3 swap in place of a 6.9

In reply to this post by BCGE201

Thank you all for the information. I’m out of town for the week. I’ll dive in this weekend and let you know if there is anything else I might need.