Introductions & Greetings New to the site? Say hello!

Starting an LS MX5, in MN

Thread Tools
 
Search this Thread
 
Old Feb 17, 2014 | 09:09 PM
  #1  
msmnick's Avatar
Thread Starter
Teching In
iTrader: (1)
 
Joined: Feb 2014
Posts: 28
Likes: 0
From: ND
Default Starting an LS MX5, in MN

Hey guys.

Started working on this project in my head a month or so back. Then, started putting numbers on paper. Started looking at parts in the last month, and found my rear end just recently. Parting out the old stuff, and hopefully over the next year, we will get this show rolling.

Background: Car is a late model MX-5, 2005, the last year of the older bodystlyes (na 90-97,nb 99-05). It was factory turbocharged, then upgraded to a modified original turbo. After that, I ran an aftermarket system w/standalone to make around 300hp. At this point I feel the v8 swap is the best option to improve power, and likely reliability via eliminating the turbo/standalone system.

My plans are loose, but coming along. I'd like to run the 8.8 Mustang rear differential setup. There have been tons of people using this system. A few have built their own mounts and control arms, utilizing the stock cobra or lincoln spindles and hub. This allows you to use the 5x4.5" bolt pattern. My intention is to try to do this setup, vs the 1500+ modified axles/hubs that the kit companies seek for their stuff (not including mounts?!).
Here is an example photo:

Stock Mark VIII spindle, cobra hub, miata subframe, custom axles, from a gent on cardomain/miata forums.

For the trans, I'd like to run a T56 w/M6 gear set, SSR shaft upgrade, and the 3/2 cone syncro upgrade. Most likely a corvette hybrid of sorts, but we will see.

Engine is going to be an LS2 at minimum. I'm going to do my best to wait it out till a good opportunity comes by for a motor. Who doesn't want an LS7, but that's going to be a tough one to catch, as I'm doing my best to stay on a budget determined by parts I'm selling from 2-3 other projects. I'm consolidating all my other crap into this car instead, leaving me my DD. The likely combo will be something like an ls2/ls3 l92 head setup. I'd like to make at least around 500hp, we will see though. The miata chassis can be made to handle it, but its not easy.

The front subframe and transmission mounts will probably be kit items. For the time and effort, the V8 roadsters front subframe, trans mount, and frame rails are hard to beat. This will be the starting point, and I'd like to do a frame brace of sorts after everything is installed to further keep the car together with this power.
Butterfly Brace:


Those of you in the know, know I haven't really said much. I know what I want to do here, but I've got an enormous amount of research and a lot of small problems to figure out along the way before I'm at the end. I'm starting by fabbing up the rear subframe, diff, and control arms first. Next I'm going to build a transmission, followed by the engine/subframe. Last will come wiring, and hopefully a painless first start. Exhaust is going to be done by the same guy who did my turbo. He's one of the best fabricators I've met. Great guy, and the prices are reasonable as well.

Happy motoring everyone, I've read tons here and I'm excited to be part of a highly technical forum with one hell of a knowledgebase.
Reply




All times are GMT -5. The time now is 09:32 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE