1UZ and 3UZ Stroker Kit

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Email me at [email protected] which of these Lextreme parts you need. Please note: we're not an auto parts supplier and I can't respond to inquries for auto parts. All parts not listed above, including the LS400 and SC400 turbo kit, rebuild kits and supercharger are sold out and won't return.

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In this article I would like to explore the potential of increased displacement for the UZFE engines.

We all know the Lexus and Toyota V8 engines are very strong and can take some punishment.

However, I think if I do a survey most owners would agree with me about increase displacement.  How can we achieve larger displacement?  Of course we all know there are two ways to increase displacement.  The easiest would be to increase bore and if possible to increase stroke.

Let’s get to the basics.

Let’s understand what we have first and we can go to the next level.  If you have read some of my tech articles about the UZFE engines, then you know they are all interchangeable.

Here is the formula to calculate cubic inch:
ENGINE CUBIC INCHES = (BORE) X (BORE) X (STROKE) X (.7854) X (NUMBER OF CYLINDERS)

Here are the specs for the following engines:

Bore Stroke Cu. In. CC Liter Bore/Stroke Ratio
1UZFE 3.44″ 3.25″ 241.65 3959.87 3.96 1.058
2UZFE 3.70″ 3.31″ 264.72 4665.65 4.67 1.118
3UZFE 3.58″ 3.25″ 261.72 4288.75 4.29 1.102
1UZ Bore with 2UZ Stroke 3.44″ 3.31″ 246.12 4032.98 4.03 1.039
3UZ Bore with 2UZ Stroke 3.58″ 3.31″ 266.55 4367.92 4.37 1.082
2UZ Bore with 1UZ Stroke 3.70″ 3.25″ 279.55 4581.08 4.58 1.138
2UZ Bore with 3UZ Stroke 3.70″ 3.25″ 279.55 4581.08 4.58 1.138
1UZ Bore with 3.50″ stroke 3.44″ 3.50″ 260.23 4264.48 4.26 .983
1UZ Bore with 3.60″ stroke 3.44″ 3.60″ 267.67 4386.32 4.39 .956
1UZ Bore with 3.75″ stroke 3.44″ 3.75″ 278.82 4569.01 4.57 .917
2UZ Bore with 3.50″ stroke 3.70″ 3.50″ 315.88 5176.40 5.18 1.083
2UZ Bore with 3.60″ stroke 3.70″ 3.60″ 324.91 5324.29 5.32 1.053
2UZ Bore with 3.75″ stroke 3.70″ 3.75″ 338.45 5546.14 5.55 1.011
3UZ Bore with 3.50″ stroke 3.58″ 3.50″ 281.85 4618.65 4.62 1.023
3UZ Bore with 3.60″ stroke 3.58″ 3.60″ 289.90 4750.61 4.75 .994
3UZ Bore with 3.75″ stroke 3.58″ 3.75″ 301.98 4948.55 4.95 .955
.10 over 2UZ with 3.75 Stroke 3.80″ 3.75″ 340.24 5575.44 5.56 1.01

The above table is very interesting.  As you can see the combination with different block and crank will create different results. 

The possibilities are endless.  Custom stroker crank might require for 3.50″ and greater.  I guess my ultimate goal would be to get the biggest crank on a Tundra motor to produce 5.55 liter. 

Here is a complete database on difference bore and stroke on the uzfe engines.

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

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!

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