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Old 09-23-2008, 02:09 AM   #61
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Lol you are well on your way.
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Old 09-23-2008, 08:34 AM   #62
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4 pages of posts and nobody mentioned that I'm in the middle of an LS6 swap right now in my previously turboed Miata.

A word of warning. There are many pissed customers of Racing Concepts which is the cheap swap kit. The guy has everyone's money and hasn't delivered. I've had nothing but good things to say about my dealings with v8roadsters though they are more expensive. I've been working with them since before FM posted that they were going to swap into a car. My build has been delayed because the machine shop and speed shop with my motor has been way too slow.

This swap certainly can get expensive quick. An '01 mid mileage LS1/T56/harness/PCM combo out of a Camaro/Firebird will run you $4500. Add on to that the cost of the K-member, clutch kit, rear end kit, etc, plus a custom exhaust and the cost adds up.

I'm FINALLY picking up my freshly rebuilt LS6 (out of an '02 Z06) tomorrow and should get this at least mounted by Sunday. I'm shooting for next weekend to fire it up.

The proper kits require trans tunnel and firewall modifications/welding to move the motor back to keep the steering geometry correct and to get the shifter coming up in the Miata trans hole.

My reasoning for the swap is the same as yours. I want something dead reliable, with %95 factory crap and I need to pass emissions. GM ECUs are great and a good exhaust, $350 cam, and valve spring upgrade will get you over 400 ft-lbs and whp.

Plus you can pick up any GM sensors or parts at every local part store and you can find great deals on performance stuff at LS1TECH classifieds.

Go read some threads in the conversion section at m.net.

Frank
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Old 09-23-2008, 01:47 PM   #63
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Quote:
Originally Posted by wes65 View Post
You have sent $2.00 USD to [email protected].
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Lol you are well on your way.
Haha awesome thanks man!

Quote:
Originally Posted by fmowry View Post
4 pages of posts and nobody mentioned that I'm in the middle of an LS6 swap right now in my previously turboed Miata.

A word of warning. There are many pissed customers of Racing Concepts which is the cheap swap kit. The guy has everyone's money and hasn't delivered. I've had nothing but good things to say about my dealings with v8roadsters though they are more expensive. I've been working with them since before FM posted that they were going to swap into a car. My build has been delayed because the machine shop and speed shop with my motor has been way too slow.

This swap certainly can get expensive quick. An '01 mid mileage LS1/T56/harness/PCM combo out of a Camaro/Firebird will run you $4500. Add on to that the cost of the K-member, clutch kit, rear end kit, etc, plus a custom exhaust and the cost adds up.

I'm FINALLY picking up my freshly rebuilt LS6 (out of an '02 Z06) tomorrow and should get this at least mounted by Sunday. I'm shooting for next weekend to fire it up.

The proper kits require trans tunnel and firewall modifications/welding to move the motor back to keep the steering geometry correct and to get the shifter coming up in the Miata trans hole.

My reasoning for the swap is the same as yours. I want something dead reliable, with %95 factory crap and I need to pass emissions. GM ECUs are great and a good exhaust, $350 cam, and valve spring upgrade will get you over 400 ft-lbs and whp.

Plus you can pick up any GM sensors or parts at every local part store and you can find great deals on performance stuff at LS1TECH classifieds.

Go read some threads in the conversion section at m.net.

Frank
I was actually a bit surprised that you hadn't chimed in. Thats not good about racing concepts, their kit was the most appealing to me, especially since they are out proving their kits worth at the track. Hopefully they come through and don't join the list of lazy scammer vendors. I am assuming the pissed off customers have a public log of it somewhere? I actually emailed him last week and he never responded to me.

Mind me asking what that LS6 ran?
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Old 09-23-2008, 02:06 PM   #64
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If you have something else to drive in the mean time, then do it.

Think of the reason you got into the Miata in the first place. For me it was a lightweight rwd roadster. V8, turbo or NA 4 cylinder... doesnt matter. You'll have the same thing, only faster, especially if you "sit on your ***" and do the LR V8. Hell, even if you do an LSx, you'll have 300hp/300tq + off idle. No more power modding is needed really. Add to it the necessary drivetrain stuffs and you'll have all of that powerful glory in a tight bullet proof setup.

To me, it would be a no-brainer if I wanted a V8. DO THE SWAP !!
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Old 09-23-2008, 02:16 PM   #65
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The RC thread of unhappy customers:

http://forum.miata.net/vb/showthread.php?t=293587

I bought the LS6 from a local guy for $2100 for the long block. It had 70k miles. He had a shop check it out and there were some broken ring lands so he foot the bill pistons and fresh rings and bearings. While it was apart I decided to deck the heads and replace some of the stuff (oil pump, lifters, various gaskets, timing chain). So I'm in for about $3k for a fresh longblock top to bottom. I needed a few other things like modded F-body oil pan to clear the k member, LS2 water pump for more clearance up front, and I needed the LS6 intake which was another $350. I bought various odds and ends like wires, new plugs, new sensors etc too.

All in all I'm in for the motor and all accessories for about $4k. T56 was freshly rebuilt for $1500. CTS rear $650. And I bought all of the v8roadsters install stuff. So I'm in for about $11000 plus my car.

I did sell off my engine, Motec, trans, diff and turbo stuff for probably $4-5K.

Then there's the labor.

I'm doing my damndest to stimulate the economy.

Frank
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Old 09-23-2008, 05:56 PM   #66
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I was expecting 3-4k for the engine/trans, sounds like that is a realistic goal at least.

How is the v8 roadsters kit build quality?
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Old 09-23-2008, 06:43 PM   #67
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Welds are very good and the fitment is top notch. I didn't even need to open/widen any mounting holes. The steering rack fit right back onto the k-member and the steering shaft went right through the loop on the k-member. Rear end mounting bolted on perfectly too. They can work on their instructions for some stuff a bit but FM has always been good at that so I'd imagine they'll collaborate on that stuff. I've got most of the info lying around in different emails, scans and printouts anyway.

Generally mid mileage ls1 pullouts go for $4500 and that includes everything under the hood, plus the complete trans and wiring harness. Deals can always be had at LS1TECH classifieds. T56 are harder to come by. Most used ones are in the $1300 range as they're beefy and used in many swaps.

Frank
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Old 09-23-2008, 09:18 PM   #68
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I am curious of how much abuse those CTS diffs can take. (Search, I know.. lol)
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Old 09-24-2008, 07:25 AM   #69
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Wheel hop will kill them. v8roadsters has had there cars on the road for a decent amount of miles with no problems. 2600 lbs, 350 ft-lbs, and tire limitations all save on the diff. There were early problems with the diff but it's been redesigned and there is a vent for the top port to combat heat. You can always go a Ford 8.8. I wanted to keep the weight down and have more room to run exhaust piping and use some of my stock braces.

Frank
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