04 E85 Z4 LSX 408ci/ Magnum T56 Build Complete!

Windham14

Newbie
Joined
Mar 12, 2025
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3
Hey guys, wanted to introduce myself and my freshly built Z4. This car took about 2 years and countless hrs to perfect. It was built with a "frame off" mentality and every nut, bolt and wire was touched or replaced during the process. There seem to be several nice LSX Miatas being built but this is one of very few Z4s I have ever seen. Here is a very brief overview of the build and some pics.

Motor: 408ci, fully forged 6.0LS iron block. Eagle forged rotating assembly, Mahle pistons, worked LS3 heads with BTR parts, ARP studs and bolts, BTR camshaft. Hellcat fuel pump, 42lb injectors, etc. All controlled by a Holly Terminator X

Exhaust: American Racing Headers, Corsa catted X, Corsa Cat back

Drivetrain: Magnum T56 6 speed, Mcleod hydraulic clutch assembly, custom built driveshaft, built Z4 center section with upgraded axles.

Brakes: Complete new set up from the master cylinder back. Powerstop Brake kits front and rear with stainless brake lines.

Suspension: BC Racing Coilovers, H&R sway bars, custom 4 wheel alignment.

Wheels Fifteen 52 Super Touring Vertex 18X8.5 and 18x9 in Graphite

The best part about this car is that you would think it was born this way. Everything looks like it left the BMW plant with this set up. All the wiring is painstakingly labeled. All factory options work on the car including ice cold AC.
That's all for now. I hope you guys enjoy!


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Last edited:

t-tony

The Legend
Deceased
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#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
If you have any video please add it on YouTube and post a link on here. I'd like to hear what it sounds like!

Tony.
 

ExMX5owner

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Australian Zeds
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Aug 31, 2022
Points
139
Location
Queensland, Australia
Model of Z
99 2.0
Welcome to the Forum.. I am Impressed, stunned, aroused, & overwhelmed by that effort.. So much I might have to go change my shorts....
Nice, Very nice..
:thumbsup:
 
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Windham14

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Joined
Mar 12, 2025
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Thanks guys. I am trying to clean up the pics and add more but it's a pain lol. I will also try to upload a video.
 

Zephyr

Zorg Guru (III)
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Aug 10, 2022
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Hi! Cool build. How did you manage to talk to the bmw instrument cluster?
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Thanks guys. I am trying to clean up the pics and add more but it's a pain lol. I will also try to upload a video.
Just so you know, it's not possible to upload video to this forum. You have to use an external host, such as YouTube.

Tony.
 

t-tony

The Legend
Deceased
Supporter
#ZedShed
Joined
Dec 31, 2013
Points
226
Location
Torksey Lock,Lincoln, England
Model of Z
E89 Z4 23i Auto
Cool!

Tony.
 

Windham14

Newbie
Joined
Mar 12, 2025
Points
3
Cleaned up the pics and added a few more shots from today. Car has 24 miles on the build. Time to enjoy it a bit before moving onto the next one!
 
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