Conversions & Swaps LSX Engines in Non-LSX Vehicles
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LS2 into 99 Mustang

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Old 05-03-2009, 11:32 AM
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Default LS2 into 99 Mustang w/Ford ECU

Another data point for those looking into a conversion for their 99-up Mustang.

My car has the Maximum Motorsport K-member and I am reusing the MM solid motor mounts. I opted for the F-body accessory drive and the car will most likely get a dry sump for road racing. The motor fits with plenty of clearance. The oil pan rail is 2.5" from the rack & pinion. For dry sump that shouldn't be an issue. My other plan is to re-use Ford's fuel injection. Should be interesting the first time I crank it.

This is going to be a very long term project (i.e. on the road next year).

Enjoy.







Last edited by serpentnoir; 09-02-2011 at 05:46 PM.
Old 05-03-2009, 12:18 PM
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So looking at the pictures, it seems that if I use a 99-01 tubular k-member on my '93 notch I should be able to drop an LQ4 without issues. Am I wrong to assume that? Btw what radiator are you using? What are the plans for engine or the whole combo if you don't mind?

I'm trying to gather as much info as possible for my project but I always find some questions unanswered. Good luck with the project!
Old 05-03-2009, 04:08 PM
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swapping in an Ls1 then re using fords fuel injection sounds like your taking 2 steps forward and 1 step backward.... why trouble yourself with something like that? the stock ls1 fuel setup is perfect and designed to run flawlessly. either way goodluck with your swap, you should lose about 120-150 lbs at the very least by swapping out the 4.6
Old 05-03-2009, 04:55 PM
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Originally Posted by Ls1Rx-7
swapping in an Ls1 then re using fords fuel injection sounds like your taking 2 steps forward and 1 step backward.... why trouble yourself with something like that? the stock ls1 fuel setup is perfect and designed to run flawlessly. either way goodluck with your swap, you should lose about 120-150 lbs at the very least by swapping out the 4.6

The weight loss should be substantial since I am going from 4.6L 32V + Kenne-bell to LS2. The ford fuel injection is purely a financial decision. I already have the harness + ECU + injectors. Those would bring minimal money if sold used and I noticed the LS stuff, even used is outrageously priced (I'm not paying $400 for a used harness...). Plus I get to keep the dash electronics and my tuner is extremely good with the EEC-V. In all I will buy two sensors and make two brackets. The rest is just plug and play.

Last edited by serpentnoir; 05-03-2009 at 05:19 PM.
Old 05-03-2009, 05:07 PM
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Originally Posted by LSNotch
So looking at the pictures, it seems that if I use a 99-01 tubular k-member on my '93 notch I should be able to drop an LQ4 without issues. Am I wrong to assume that? Btw what radiator are you using? What are the plans for engine or the whole combo if you don't mind?

I'm trying to gather as much info as possible for my project but I always find some questions unanswered. Good luck with the project!
At this point the plan is 6.0L LS2 with L92 heads. factory crank, forged rods and pistons. Dry sump, endurance cam, 11:1 compression. Nothing special.

The radiator is a Fluidyne for 99-up Mustangs. A few years ago I cut the bottom core support off and raised the radiator against the top core support and added a Nascar oil cooler under it. I use a Taurus fan behind it. The blown 4.6L needed a lot of cooling on the road course.
Old 09-29-2009, 06:27 PM
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Updates??
Old 09-30-2009, 12:03 AM
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Yes. I'll take some pictures and post them soon.

Lots of custom fabrication because I'm using the Ford harness/computer.
Old 09-30-2009, 12:12 AM
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Which trans are you using in this build
Old 09-30-2009, 08:14 AM
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Originally Posted by serpentnoir
Yes. I'll take some pictures and post them soon.

Lots of custom fabrication because I'm using the Ford harness/computer.
That's exactly what I'm interested in. I have been considering the same set up but have not started on it yet. I believe the firing order is the same, I could definitely hook up a 36-1 wheel, and I have high hopes for the camshaft sensor being adaptable. I am interested to see what you do with the COP coils though. The car I plan to do this on has the older 4 post coils and wires so that part will be easier on mine. Can't wait to see how you did it!
Old 09-30-2009, 04:06 PM
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Originally Posted by Whitedevil666
The car I plan to do this on has the older 4 post coils and wires




Mine does too.
Is the firing order infact the same for Modulars and LSxs ?
Old 09-30-2009, 04:16 PM
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why not use MSII instead of the ford stuff??
Old 09-30-2009, 04:23 PM
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Originally Posted by LSNotch
So looking at the pictures, it seems that if I use a 99-01 tubular k-member on my '93 notch I should be able to drop an LQ4 without issues. Am I wrong to assume that? Btw what radiator are you using? What are the plans for engine or the whole combo if you don't mind?

I'm trying to gather as much info as possible for my project but I always find some questions unanswered. Good luck with the project!

The 96-04 4.6 K-members are the same so that will broaden your search. In order to use that K-member in the Fox you will have to enlarge the rear holes as the newer K-members are slightly different. The fox cars also have a different track width than the newer cars. The 96-04 K-member will have a wider track than the fox but just keep that in mind when doing the swap. Easiest thing to do would be to get the AJE unit since you are already going to have to buy a K-member. Might as well get the easiest one to deal with.
Old 09-30-2009, 04:25 PM
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Look at how small it is instead of the pos 2v. You'll make many people cry on svtp.
Old 09-30-2009, 04:35 PM
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Originally Posted by S.A.L.
Mine does too.
Is the firing order infact the same for Modulars and LSxs ?
#3 and #8 swap places so the 4.6L is 1-3-7-2-6-5-4-8 and the LSX is 1-8-7-2-6-5-4-3
Old 09-30-2009, 04:37 PM
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Originally Posted by NemeSS
why not use MSII instead of the ford stuff??
If you use the ford stuff then all the gauges, a/c controls, PATS "anti-theft" everything works just like factory. really doesn't seem that hard to do. I've done the LSX swap in a fox, now it's time for one of these cars.
Old 09-30-2009, 04:39 PM
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Originally Posted by SOM68SS
#3 and #8 swap places so the 4.6L is 1-3-7-2-6-5-4-8 and the LSX is 1-8-7-2-6-5-4-3
Keep in mind ford and chevy number their cylinders differently. I'm pretty sure the 5.0 HO firing order and LSX are the same (When you reorder the cylinder numbers), not sure on the 4.6L though.
Old 09-30-2009, 06:14 PM
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Originally Posted by bmxmon
Keep in mind ford and chevy number their cylinders differently. I'm pretty sure the 5.0 HO firing order and LSX are the same (When you reorder the cylinder numbers), not sure on the 4.6L though.
All numbers aside the engines fire exactly the same. Here I trie dto draw a picture to explain it:

Old 09-30-2009, 11:13 PM
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Originally Posted by SOM68SS
If you use the ford stuff then all the gauges, a/c controls, PATS "anti-theft" everything works just like factory. really doesn't seem that hard to do. I've done the LSX swap in a fox, now it's time for one of these cars.
But the fox didn't have sequential injection. That means you need a trigger on the cam. With the LS1 that was a no-go but with the LS2 and LS3 GM put the sensor on the timing cover. Bingo! I reused the hole and milled an adapter to mount the Ford sensor. For the crank sensor I used a 36-1 teeth trigger wheel from Ebay. Common part for those that use Megasquirt. The key is knowing how to time the triggers...
Old 10-01-2009, 12:07 AM
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isnt the factory ford fuel system only good up untill around 400-450 as far as rails and lines?
Old 10-01-2009, 08:30 AM
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A lot of '03 Cobra owners run 550+ rwhp with the factory lines/pump/injectors. The injectors are the limiting factor. After that I'm not sure: MAF? or pump? The pump can easily be boosted with a BAP and SCT makes a higher capacity MAF. I already retrofitted the '03 pump to my '99. My plan is to run a Lightning 90mm MAF.

If I can get a few minutes tonight I'll post some pics.


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