UPDATE: A limited supply of the original best-selling Lextreme 1UZFE EGR Delete Kit remains. If you own a 1UZ from 1990-1997, you really need to get this kit! Email me at [email protected] for help with ordering or questions. This will probably be the last kits I have made.

All other parts are SOLD OUT and won't return, including the LS400 and SC400 turbo kit, rebuild kits, supercharger and performace torque converter. We're not an auto parts supplier and I can't respond to inquries for random Lexus and Toyota auto parts.

LEXTREME LEXUS FORUMS HERE! - Post Questions For Quick Answers!

Twin Turbo Lexus SC400 with 4.7L Toyota Tundra Engine

From my personal research this is the first Lexus (car) ever got this swap.  This is something to be proud of.  This is a functional and running SC400/Soarer with this 4.7L engine from the Toyota Truck/SUV.

The goal of this project is to terrorize the performance cars on the street and on the track.  With help of sponsors and financial donations, this car will be pushing close to 900-1000 hp with massive lower end.

Why this project?  The 2UZFE has one of the best bottom ends.  This iron block with two bolt main is about to get a modified 1uzfe bolt main caps.  This engine is long overdue for high power production.  The strong foundation with performance aftermarket parts along with race proven parts from world famous Supra MKIV Twin Turbo.

I have worked very hard and search for a very long time to get Supra interchangeable parts.  Thanks to Spark Racing and their help for 2JZ parts.  I also want to thank our Lextremers for their knowledge and support.  This motor is being build slowly while waiting for a roll chaise, sponsors and money.  The below list of parts are partially in and partially looking for or being made as we speak.

We are humbly aiming for at least 1000 hp and looking for respectable ET.  Due to the high expense of this project, we are currently seeking major sponsorship

4Fat Boy Garage = Turbos, Intercooler and Silicones
4Atomic Speedware = Chevy 327 Rods and ARP L 19 Bolt Studs
4B and E Customs = 8 Delphi low impedance 1000 cc/min Injectors
4Wolfkatz Engineering = Upgrade Fuel Rail with 8 AN capable of 1000+ hp
4Spark Racing = Installation of the Twin Turbo & Fuel Systems.
4Cometic Gaskets = MLS head gaskets
4Performance Coatings = High performance headers and other parts coatings.
4Powder Coating and wheel repair = Powder coating and wheel repair.

Bottom End

The block will be the
modified 2uzfe iron block from 2 bolt main to 4 bolt
main by using 1uzfe 6 bolt main caps with .01″ over bore and hone


Stock 1UZFE forged
steel crank

1UZFE 6 bolt mains but only 4 will used (no side bolts)

2UZFE Main Studs
Clevite 77 H series

performance rod bearing, Main, and Thrust
bearings from
Federal Mogul Bearings.


Modified Chevy 5.7 H-Beam Rods
Forged H-Beam Rods with ARP
L19 bolt handling 1200 hp.  However, we have rods
that will bolt on
without modifications.

Custom made Ross
Forged Pistons
with Chevy rods pin size 8.5:1 compression with .010″

Chevy Race piston pins
handling 1,200 hp

The rings will be chrome
molly rings to reduce detonation.

Heads Moderately Ported 1UZFE heads SC400)


Lextreme stainless steel
oversize valves

Performance Valve springs

Stock retainers

Lextreme Stage II

Studs & Bolts

Custom ARP 7/16″studs

will be use on the heads along

ARP Rod bolts


Cometic Multi-Layer Steel Gaskets

Custom build mild
steel twin turbo headers
Turbo This monster will
be feed by two Garrett T04S 60-1 with .48 A/R
Blow Of Valve Need Sponsor
but I have success with 50 mm Tial

Dual 255 Walbro
high volume and high pressure fuel pump
with (8) 1000 cc injectors with

1000+ hp custom fuel rails
Injectors I will be using
Delphi 1000 cc/min low impedance injectors

Custom Bar and Plate front mount intercooler.
The intercooler will be 4.5″ x 15″ x 32″ with dual
inlets and one outlet along with internal baffles.


8 Single-post
TTL driven ignition coil

Wires Custom
Magnecor Spark Plug Wires

Chevy TH400
with Lextreme Adaptor Plate & Custom Torque

(Tundra 4.7 Iron Block)
The 4.7 liter is the big brother of both 1uzfe and 3uzfe.
The reason I choose the 2UZFE Tundra Block is because its an
iron block and it also have slightly larger bore (3.70″ as
compare to 3.44″ for the 1UZFE).  Secondly the 2UZFE also
has a larger stroke.  The 2uzfe has 3.31″ vs. 3.25 for both
1 and 3UZFE.  Some of you might say why would you put in a
82 lbs heavier motor in a SC400 and has only 2 bolt main.
The two bolt main will be converted to 4 bolt main
by using
1uzfe main cap and drill and tap two additional holes for the
main caps.  As compare from 1UZFE and 2UZFE.  The
1UZFE uses 10 mm @ 1.50 pitch studs and the Tundra uses 11 mm @
1.25 pitch.  The main caps will be two 11mm studs with two
10 mm studs.  4 main studs can handle mega horsepower.
However, the main caps from 1uzfe will not be just bolt on.
The 2uzfe block will be cut slightly to make room to mate with
the 1UZFE main caps.

The iron
short block is 82 pounds heavier.  However with larger cubic
and advantages of iron block.  One of the major
disadvantages of iron block its its weight.  However, for
high power application, iron block will make more hp pound per
pound of boost.  Iron blocks are stronger structurally and
have less gives or movement during high hp application.
Iron block also have less expansion during high heat and
therefore the rings seal better in the combustion chamber.
Lastly, iron block doesn’t dissipate heat too well and
therefore it retain more heat and heat will help make more hp.

Rotating Assembly:
No I will not use those
skinny rods from the
Tundra Motor (Picture has 1, 2, 3uz and H Beam Rod
.  I will be using the Chevy
aftermarket 5.7 forged
H-Beam rods.  The reason I use Chevy rods is because they
are dirt cheap and its very strong.  The Chevy H Beam rods
are slightly heavier and might affect the redline, but for this
high hp application stock, light weight or aluminum rods will not
do the job.  An average custom set of forged rods is
about $1,400 and an off the shelf Chevy 327 rods is about $500.
Believe it or not, the Chevy 327 Small
Journal 5.7 rods

are almost the same as the UZFE rods. 

recently we have made some H beam rods specifically for 1uzfe,
2uzfe and 3uzfe engines.  These rods are bolt to your stock
pistons or aftermarket forged pistons.  Please see here for
more details on

Lextreme Lightening Rods

I will be using 1UZFE heads.  Why you may ask.  The
reason I will be using 1UZFE is because they are cheap.
You can get set of heads for less then $100.  However, the
good things still to come.  I will be swapping out the
stock valves with Lextreme

Over Size Valves
.  The intake gets 1.5 mm over size and
exhaust receive 1.25 mm.  Beside the larger valves, we also
put in stronger valve springs.  Our valve springs are
double the stock setting pressure and they are prefect for high
rpm application.  The stock 1uzfe spring seating pressure
is 45 lbs and our springs are 82 lbs.  More

details and explanation

Here are
some Computer dyno figures performed by Mike Duke from
Ported 1UZFE
heads with Larger Valve, Cams and Boost

Due to high demand on fuel supply, this project will receive
a custom set of high flow fuel rails along with 8 1000cc low
impedance injectors.  These injectors can support up to
1600 bhp and the fuel rail will support 1200+ bhp.  This
system is being fed by two high volume, high pressure Walbro
fuel pumps.  From the fuel pumps, the fuel will travel via
two 6-AN stainless steel braided lines and then join into a Y
fitting to 10-AN.  The 10-AN line from run from the end of
the car to the engine.  From there, the 10-AN will T off
into two 8-AN.

For the
return line, the 8-AN will join into a T and exist to an
Adjustable Fuel Pressure Regular via a 6-AN.  From there,
the return line will be 6-AN.  Please see below diagram for
details.  The two pictures below are the complete custom
fuel rails and fittings along with a close up shot of a 1000
cc/min low impedance injectors.

I would like to run Garrett GT35R with .63 turbine A/R.  GT35R is rated
600 bhp and the combined would be
around 1,200 bhp.  With the larger cubic inches, the ball bearing turbos will spool
up very nicely.  Initially I was going to make something
call SSTT (Single Sequential Twin Turbo)
but due to the complexity of the pippings and space.  I
just stick with the traditional two turbos setup.

The intercooler will 4.5″ x 15″ x 32″ with two inlets and one
outlet.  The intercooler is top to bottom configuration
with bar and plate.  The two GT30R will have a 2.5″ inlet
with a top to bottom style intercooler.

Custom Forged Pistons
& Rods
Here are some pictures of the piston and rod along
with tappered wall pins with Total Seal Chromely Molly Rings.
The pistons are 8.5:1 compression ratio.  With proper
Fuel/Air/Ignition Tuning, these internals can handle over 1000
hp.  The forged internals are custom designed to handle
high boost applications.  Below are custom pistons and
Chevy H Beam rods.  I have two sets of H Beam rods.
Eagle ESP 3D and Carrillo.  I am still debating which rods
to use.  The Eagle rods are rated 1,200 bhp and Carrillo
from what I heard is rated at 1,600 bhp.  The Eagle rods
are brand new.  However, the Carrillo rods were used once
for a NASCAR event.  It has brand new pin bushings.
So, its basically brand new.  Eagle H Beam rods are about
mid $500 and you get it from
Its the best rod for the price.  However, Carrillo is about
$2,200 a set, but i paid $450 for them.  I just can not
pass this great deal.  What do u think?

Carrillo Rod
Eagle Rod
Carrillo Rod
Eagle Rod

If you are
interested in purchasing above Forged H-Beam, please visit

Here are
some pictures of the Federal main bearings and Clevitte
performance rod bearings.  I am still waiting for the Main and
Thrust bearings.  However, here some pics.

Here are
my custom 1000+ hp custom fuel rails by
Wolfkatz Engineering

Today I
finally got some time to work on my SC470TT project.
I got a set of 3/8″ mild steel flange and started to cut up the
pipes.  Here are the plan of attack.  The primary
pipes will be 1.5″ mild steel and join to 4 in 1 stainless
steel collector .  Here are some
pictures of my amature fabrication.  Once
again, I didn’t have any formal training in welding or
fabrication.  As I am doing this project, its also a
learning process for me too.  The pictures below took me
about 45 minutes.  I got 2 1.5″ U bend and cut them right
into the middle and you get 4 90 degree elbows.  These are tac weld and once its done, I will bring them to a local welding
shop for tig weld.


Its finally here. Just pick-up my 2UZFE shortblock for my
SC470TT project. This engine is a work of art. Here are the

Block: Tundra 2UZFE 4.7 Iron block
Crank: 1uzfe crank
Main: 4 bolt main from 1uzfe VVTi conversion
Rods: Eagle ESP 3D H Beam with L19 ARP bolts

Atomic Speedware Sponsored
Pistons: Custom Ross forged 8.5:1 Compression
Pins: Heavy duty Ross pins
Rings: Total Seal heavy duty custom rings
Bolts/Studs: ARP 11 mm main bolts (4 per main)
Head Studs: 7/16″ drilled and taped

The engine also got VIP service. TLC
* Hot Tank
* Align Bore (.02″ over)
* Align Hone
* Deck
* Power Hone
* Convert to 4 bolt
* Pin fit rods
* Resize
* Balance Assembly
* Grind Crankshaft
* Full Assemble

Here is my progress on the engine building.
So far the 2uzfe fits like a glove.  More details on the
build up and block swap.


Here is a picture of the Lextreme Lightning Rod and forged pistons combo

A closer look at that custom forged Ross piston.

Here is a rough view of the 4 bolt main conversion

This view shows the mains with ARP studs and H beam rods.

A closer look at the ARP L-19 bolts

2UZFE block with 1uzfe pistons design.

A rear view of the 2UZFE block

A closer look at the 1uzfe face pistons with two valve relief.

Oil pick up and oil pan. Its a direct bolt on.

Here is the engine with water pump and oil pump installed along with heads and manifolds.

Different view of the long block.

The black portion of the engine is the Tundra Iron block

Everything fits like a glove. All the parts are interchangeable.

Intakes are installed

Frontal view of hybrid engine

Fully installed bottom end.

This view from top to bottom. All fit like a glove.

All accessories are just bolt right on.

SC400 oil pan. Besides the block, everything else is from a SC400.

Noticed something strange? Yes I mounted the alternator backward so I can utlized the space for turbo.

want to update our frequent visitors with good news.  The
engine is finally finished along with the ported heads.  I
also picked up a high mileage 1995 SC400 with 1997 body kit.
Its black on black and its a prefect car to host my 2uzfe/1uzfe
engine.  Here is a picture of my car with 19″ rims and Tein
Basic coilovers.

This car will get few more 97
SC400 body parts along with a new coat of paint and I would call
it a day.  I am not a bling bling type of guy.  I want
something nice and settle.  I am too old for this type of
stuff.  Secondly, making my car too much look will attract
cops and its not a good thing.  So I prefer to stay
somewhat low profile.  However, when it comes to speed
would be another story.  This car has 228,000 miles on it.
When swap out the engine, it still has the original sparkplug

Here are some pictures of the
custom engine mounts I made specifically for 1992-1997 SC400 or
1990-1997 LS400.  These mounts are made of solid 3/8″ mild
steel with welding both inside and out side.  They are
available upon request.  These mounts fit into the engine
like a glove.  Solid, functional and beautiful.  We
can also make custom mounts for the GS400 and GS430 also.

Here are two pictures of SC470 engine about to be
install.  Once again, everything look very factory like.

Here is the final product of this
swap.  From outside, the engine looks completely stock.
However, internally its a beast.

Yes, I know.  You are asking
for dyno and videos.  At this moment, I am still taking an
easy on the engine so it would break in properly.  I will
post some dyno numbers when this car is ready in N/A form.
However, here few videos taken during the initial start up of
the engine.

Engine Start Up


Accelerate from a dead stop

1,800 RPM burn out

Here is my initial dyno with low
compression pistons along with stock exhaust system.
However, it does have Stage II Cams and few other none hp
contributory mods.

According to 1992 SC400: RWHP is
about 180 (28% drivetrain lost)
Max. Output (SAE-NET) 250@5600 rpm
Max. Torque (SAE-NET) 260@4400 rpm

According to 2000 Tundra: RWHP is about 205
Max. Output [SAE-NET] 245 HP@4800 rpm
Max. Torque [SAE-NET] 315 lb-ft@3400 rpm

According to 2001 GS430:
Max. Output (SAE-NET) 300@5600 rpm
Max. Torque (SAE-NET) 325@3400 rpm

According to 1995 SC470: RWHP is about 226 and 256 rwtq with 28%
drive train lost.
Max. Output (SAE-NET) 315@5000 rpm
Max. Torque (SAE-NET) 355@3900 rpm

The next thing will be relocating
the alternator, delete the AC compressor and electric fans

If your
company would like to participant in any of the Major
Sponsorship categories, please contact direct so we can work out
the details.  Conversion kit is available for Soarer/SC400,
Celsior/LS400 or Aristo/GS400
right here.

Some progress has been made will the holidays
are over.  Recently I and few of my friends installed the
twin inlet top to bottom intercooler.  Its is not your
typical side to side bling bling front mount.  Here is the
mock up pictures and perhaps I might move it down 3 inches
lower.  We will have to see.

The intercooler is sitting little high but it is
very functional.  However, I might have to move it down
about 4 inches.

As for the twin turbo headers.  Its done
with few other minor fabrications.  The only thing I really
need right now would the down pipes for the turbos.
Once that is done, then all the pipes will get ceramic coating
for thermo protection.  Here are some pictures:

Here are two turbos mounted on a free standing
motor.  Few more months these turbos should in the car.

I got few updates for our visitors.  We
managed to pull the engine and transmission out and I deleted
all of the A/C related parts including the AC condenser.  I
used polished aluminum pipes and couplers supplied by
Fat Boy Garage This
company is very good to deal with along with great prices too.
I highly recommend this company.  Anyway, here are some

The pipes and bends fit so well.  SC400
chaise was blessed with lots of room and it was meant for twin
turbo.  The tope and bottom intercooler fits between the
frame rails like a pair of gloves.  I will use mild steel
for my intercooler outlet pipe because I want to weld them
together and powder coat them matted black.

Fat Boy
has all of my intercooling parts I need.
Intercooler, pipes, couplers, T Bolt clamps.  Give them a
call and ask for Chung tell them David from refer you.


This is a freelance site and its not supported by huge companies.
I have been doing most of the R&D and technical write-ups by
myself with my personal money.  I have taken extra steps to
demonstrate in details how things are done.  Currently I am
one of the few people doing Lexus V8 research and performance
enhancement.  This effort comes from my personal love for
this wonderful engine.  Most of the modifications are from
trail and errors.  There is no cook book for the 1UZFE
modifications and its a virgin territory for performance.
Most of the parts, labor, web development and site hosting are
from my personal hobby money.  If you feel my effort help you
in any form, please do not hesitate to donate any amount of money
to support this site.


Do you have any questions? If so, please head over to the forums to get a quick answer or share your experience!

Cash App (user: $lextremeparts).
This is a freelance site with no support by huge companies.  I have been doing most of the R&D and technical write-ups by myself with my personal money and literally thousands of hours of my time.  I have taken extra steps to demonstrate in details how things are done.  Currently I am one of the few people doing Lexus V8 research and performance enhancement.  This effort comes from my personal love for this wonderful engine.  Most of the modifications are from trial and error. There's no cookbook for 1UZFE mods and its unknown territory for much of supercharger performance.  The parts, labor, web development and site hosting are 100% paid from my personal hobby money.  If you feel my efforts help you in any form, please do not hesitate to donate any amount of money to support this site. You have no idea how much I and the entire Lexus and Toyota community appreciate it!

1 thought on “Twin Turbo Lexus SC400 with 4.7L Toyota Tundra Engine”

  1. WWHOA!!!! Ah man this is fine art, really beastiful!!
    [Well that took 11 times,phone kept trying to correct my spelling].
    I was shopping for timing belt and components when I stumbled across this, I read Lexus with Tundra engine, I had to check this out. I want one!
    I have an 02 Tundra 4.7L and I love it in fact I’m not driving it until I change the timing belt,etc. On a whim I decided to check the mileage from my registration to determine approximately when that maintenance occurred and it’s 20000 miles overdue. Tundra has been parked since(almost 2 weeks now).
    What you’ve done is fascinating and the engine , well, is fabulous! I love cars with power and speed. If I had the $ to donate I most certainly would.


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