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Old 05-01-2011, 01:15 PM   #1
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My 1990 Xcab Lexus V8 swap

This is my 1990 Xtra Cab S.A.S., 1UZ-FE, Dual Tcase build

I've built so many different toyotas with different engine, transmission/tcase, and axle combinations, I thought I'd build something different.

I didn't put this in the solid axle swap forum because there is nothing special about it and there is plenty of axle swap builds.

So I thought I'd put my build in the engine swap forum.


Here's the truck I picked up for $400


The axle swap, going to get a HP w/4.88 locker


Axle swap done


The V8, came from a 93 LS400


The output shaft and tailhousing from a 96 4Runner to convert the Lexus trans.


Just got the dual Tcase adapter while it was on sale


Just finished the plug and play harness.
Now I'm waiting for my SC400 oil pan, oil filter adapter and exhaust manifold.
Once I get these parts I can drop the engine in!

Last edited by TheMadScientist; 11-18-2011 at 10:15 PM.
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Old 05-01-2011, 06:20 PM   #2
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Here's some plug pin outs if this might help somebody.



Last edited by TheMadScientist; 05-02-2011 at 11:24 AM.
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Old 05-01-2011, 06:25 PM   #3
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Nice write up!
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Old 05-01-2011, 06:35 PM   #4
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nice .. $400 for the pick up, what a deal .

hey man doesnt that extension housing clock (or whatever you call it ) to the driver side ?

and nice job on the connector pin outs.. i just noticed the 93 has the fuel pump ecu unlike the 90-92 ls 400 just uses a relay and no di.. the 93 ls 400 is like the sc 400's..
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Old 05-01-2011, 06:58 PM   #5
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nice .. $400 for the pick up, what a deal .

hey man doesnt that extension housing clock (or whatever you call it ) to the driver side ?

and nice job on the connector pin outs.. i just noticed the 93 has the fuel pump ecu unlike the 90-92 ls 400 just uses a relay and no di.. the 93 ls 400 is like the sc 400's..
Yes its for a drivers drop case, thats why I have to buy this adapter from Marlin at the link below.
http://www.marlincrawler.com/transfe...v6-drivetrains

As far as the Fuel ECU, I didn't know what to do so I just left how the fuel pump is wired up with the truck EFI main relay.
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Old 05-02-2011, 07:47 AM   #6
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Yes its for a drivers drop case, thats why I have to buy this adapter from Marlin at the link below.
http://www.marlincrawler.com/transfe...v6-drivetrains

As far as the Fuel ECU, I didn't know what to do so I just left how the fuel pump is wired up with the truck EFI main relay.
so your just using the fpc off the lexus ecu to trigger the relay ?

im not really sure either as to how NOT to use the sc fuel pump ecu so im just gonna use it , .. the 92 ls ecu is so much easier just one wire the fc from the ls ecu to the fc on the 3.0 COR,done .. simple.
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Old 05-02-2011, 11:17 AM   #7
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so your just using the fpc off the lexus ecu to trigger the relay ?

im not really sure either as to how NOT to use the sc fuel pump ecu so im just gonna use it , .. the 92 ls ecu is so much easier just one wire the fc from the ls ecu to the fc on the 3.0 COR,done .. simple.
I don't know how important it is for the main ECU to run the pump, but the way I have it wired, when the main EFI relay turns on, so does the fuel pump.
I would of kept the pump ECU, but I scraped the car before I realized there was one. I guess if it don't work, I'll have to go to the junk yard and get one.
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Old 05-05-2011, 07:41 PM   #8
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Since I'm waiting for money, I decided to swap the output shaft on the lexus trans.


All the guts tore out and output shaft removed




There it is, back together


It's now officially a 4wd.
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Old 05-06-2011, 06:33 AM   #9
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What size are your front springs? Thanks for posting the pin outs for the pickup. I will probably be able to start mine this weekend now.
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Old 05-06-2011, 01:43 PM   #10
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What size are your front springs? Thanks for posting the pin outs for the pickup. I will probably be able to start mine this weekend now.
I'm running the All-Pro 6" F&R and 35" tires. My truck was originally an automatic, so that C2 plug on your truck might be smaller, I know some of them were.
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Old 05-06-2011, 01:49 PM   #11
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Wow, freakin awesome man!
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Old 05-10-2011, 07:32 PM   #12
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I finally got the SC400 parts, Oil pan, left exhaust manifold, and Oil filter adapter. I had to drive 350 miles to a Upull and Pay down in Albuquerque, NM. I got all this for $80 plus gas.



This is what I'm going to try for the shifter, it's out of a 95 2wd 4Runner.
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Old 05-10-2011, 07:37 PM   #13
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Did you get the dipstick & tube and the manifold heat shields?
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Old 05-10-2011, 07:57 PM   #14
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Did you get the dipstick & tube and the manifold heat shields?
No I didn't get the heat shield and I was half way home when I realized I forgot the dipstick/tube. So I figured I'll make the old tube work somehow.
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Old 05-10-2011, 08:11 PM   #15
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350 miles wow i know toyminator has parted out a few sc 400,s and may have some parts you need .. i also have some if you need any .. i may have the other sc manifold, i cut one up then decided not to use them and still have the other but not sure what side its from .. ill check if your interested .. i also have a few of the sc fuel pump controls if you want ,, did you get the oil pick up ?
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Old 05-10-2011, 08:14 PM   #16
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one mor ething , not a big deal but now the oil level and and oil temp are on the opposite side .. might want to extend the wires since you still have the engine out.
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Old 05-10-2011, 08:28 PM   #17
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never mind on the manifold i have the same side as the one you have pictured .
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Old 05-11-2011, 12:00 PM   #18
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one mor ething , not a big deal but now the oil level and and oil temp are on the opposite side .. might want to extend the wires since you still have the engine out.
I'm using the truck cluster, so isn't the oil level useless? I did find an oil pan on ebay the the guy was selling all the pieces seperate, total price shipped @ $200. I then found one at a junkyard in Denver at 100 miles away, but they wanted $100 for the pan and $80 for the manifold + $$ for the oill filter adapter. So I figured driving 700 miles round trip was cheaper, $80 for everything and $80 for gas, total price spent $160. Yes I did get the pick up tube.

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Old 05-12-2011, 09:28 AM   #19
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I'm using the truck cluster, so isn't the oil level is useless? I did find an oil pan on ebay the the guy was selling all the pieces seperate, total price shipped @ $200. I then found one at a junkyard in Denver at 100 miles away, but they wanted $100 for the pan and $80 for the manifold + oill filter adapter. So I figured driving 700 miles round trip was cheaper, $80 for everything and $80 for gas, total price spent $160. Yes I did get the pick up tube.
well the oil level and temp are only for warning lights so maybe you can hook them up to a spare bulb in your cluster.. ABS or something ..
or just not mess with it...
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Old 05-14-2011, 07:40 PM   #20
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The engine is in but just hanging out. Getting ready to fab up the motor mounts. Hopefully I wont have to take it back out.
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1990, 2011, 4runner, 4x4, 93, ecu, fuel, lexus, ls400, pickup, pump, sale, swap, toyota, v8

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