Diesel Swap Question
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Junior User
Joined: Oct 2015
Posts: 70
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From: Hiram, GA
Diesel Swap Question
Hi all, I have recently come across a deal I cant pass up. Through my job I can grab a VERY recently wrecked 1997 F250 with the Powerstroke 7.3 turbo. The miles are low and the truck was T-boned. I will be paying $300 for the whole truck.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
Hi all, I have recently come across a deal I cant pass up. Through my job I can grab a VERY recently wrecked 1997 F250 with the Powerstroke 7.3 turbo. The miles are low and the truck was T-boned. I will be paying $300 for the whole truck.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
I would of been SO much easier if your truck was 92+
Also the engine will not bolt into the f150 frame without issues
Then there is the diesel weight into a half ton.
Basically what i am getting at is, you are trying to put the wrong two trucks together
Posting Guru
Joined: May 2010
Posts: 1,146
Likes: 17
From: Central Indiana
If Georgia doesn't have smog testing that would affect you, look into a 4BT Cummins swap. Lighter than a PowerStroke, plenty of grunt. Look around for a fully mechanical variant, such as something out of a bread truck. You would still need to compensate for the extra weight of the 4BT, but not like a powerstroke.
If you do have smog testing, you should probably look into finding out why you're getting such lousy mileage. My F250 4X4 460 with 4.10 gears gets better than that.
If you do have smog testing, you should probably look into finding out why you're getting such lousy mileage. My F250 4X4 460 with 4.10 gears gets better than that.
Lead Driver
Joined: Feb 2002
Posts: 7,961
Likes: 594
From: Greater Austin, Texas
I put a 1989 IDI into a 1991 Bronco so it can be done. If the donor is a 2wd truck the springs will work in your '89. The wiring is going to be tough - I think the easiest thing would be to use all the donor wiring both under the hood and in the cab. Use the donor dash and door panels as well. That way all the stuff that make the motor run and the gauges work and such will be from the donor, you will just have to mate that to accessories like power windows and such. Your firewall will have to be modified to take the '97 main connector which is square whereas yours is round.
As for MPG, this may mean nothing, but my Bronco got about 20 MPG.
As for MPG, this may mean nothing, but my Bronco got about 20 MPG.
Thread Starter
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Junior User
Joined: Oct 2015
Posts: 70
Likes: 0
From: Hiram, GA
Thanks guys that's what I figured. I am going to find a 1992+ truck and do the swap in it then. I havnt given up on my old girl just can't pass up this opportunity at a nice swb powerstroke turbof 4x4.
Yeah my truck just needs the Maf conversion and a tune is all the speed density is unable to handle the build is all It will get there
Yeah my truck just needs the Maf conversion and a tune is all the speed density is unable to handle the build is all It will get there
Lead Driver
Joined: Oct 2003
Posts: 8,476
Likes: 37
From: Madison, WI
Different generation truck, and completely different engine. The OBS dash won't even bolt to the bricknose cab structure without fabrication. Brad's last statement (in post 2) nails it; the OP should find an OBS 3/4-ton or 1-ton truck.
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Senior User
Joined: Oct 2016
Posts: 132
Likes: 0
Hi all, I have recently come across a deal I cant pass up. Through my job I can grab a VERY recently wrecked 1997 F250 with the Powerstroke 7.3 turbo. The miles are low and the truck was T-boned. I will be paying $300 for the whole truck.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
I have as some of you know a 1989 F150 single cab short wheel base. I have replaced everything in the truck from steering to brakes and axles. The body is pristine and looks all original. I recently had a fresh 351w with a built AOD (4r70W internals). The issue is 9mpg on 32's with 3.55 ratio. I am wanting to keep the interior IE dash and gauges as original as possible. I know the 1997 is an OBDII and will require a lot of wiring to convert.
The question is can I swap the engine and splice the harness to work with a OBDI cluster? I will be switching to a 5 or 6 speed and swapping out the Axles to include a straight front axle.
another question: Does anyone know what the MPG would be with the lighter truck?
I am trying to find a good link for the swap and have found some bronco and other swaps but everyone is swapping the dash and front clip.
Thanks in advance.
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