That's awesome to hear. What supercharger are you running?
Trinity article about motors blowing up
- Thread starter WicK
- Start date
JDM engineering sells 1200hp blocks
Around $13K-$14K with sleeves and oil pump upgrade
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This is what I'd like to buy and sell my stock 5.8 engine.
5.8L GT500 LONG BLOCK (LM354L)
5.8L GT500 LONG BLOCK (LM354L)
I agree fully.
Well shit now I’m gonna be scared to get on it. Lol....
I just need to better educate myself on what my car is / is not capable of doing with the set up I have. This is ultimately where I failed and now I’m paying the price; literally. Looking like $17K
I need to look into putting a rev-limiter on this thing. I remember the easy days when I could slap in a MSD ignition on my 91LX and change the little pills out . Is that an option on this one??.
You definitely want to avoid the rev limiter at all cost with mod motors, that's what breaks timing components. Maybe install a shift light that comes on 6,500 so you know when you're getting close. Obviously with the built engine you'll be able to shift at 7k without issues.
i wouldn't worry about it with the built motor. Just get a fuel system and run the car on e85 and test your fuel at fill ups to verify you are getting good fuel. It will be pretty difficult to tear the motor up un less its just plain abuse.
I would go to JDM engineering before i would get a L&M motor or MMR.
The L&M quality is solid. And I meet personally people abusing the heck out of those long blocks on 1200hp auto. L&M is a real one stop purchase but it cost!!!
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Great advice. I actually have that exact list of parts left over from going full Fore return if anyone wants to get serious and go E85.
PM if serious
-J
My JDM 5.8 has been perfect with a recent perfect oil analysis after several years at 1000rwhp.
My stock engine had an oil pump gear failure but I was also pushing it and had some 7300rpm shift flairs (racing at track so I was pushing it).
For guys staying 100% stock longblocks I’ve also said 750-800rwhp on E85 or good fuel is relatively safe.
Respect octane and RPM and the factory 5.8s can take big power.
-J
I have heard nothing but good things about the JDM 5.8!!I remember what happened to the guy with that L&M motor,and its just a six had nothing but problems with a mmr motor.
I have heard nothing but bad from MMR but never heard anything from L&M. This is the first time I heard anything and sounds to be about other than the V8 engines they make.
JDM is a great price for the offer for sure and I might go that rout.
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Yea,just to put this out there i dont have a 5.8 done from JDM.Just looking at them and others,JDM seems to be very good,with no issues.I do plan on getting their cams though.
+1 to all of this.
With all due respect, you haven't been here long enough. I've seen/heard decidely mixed reports and widely varied opinions regarding L&M. A lot of the relevant info disappeared from the site but, before you spend a lot of money with them, spend some time with Google and ask @Bad Company for the Cliff Notes version of his experience.
You cannot go wrong with JDM. Who else gives you a years warranty on a built engine as long as you not detonate it? Almost six year's later after the build I have not touched a wrench on my car other than to change plugs and oil. JDM all the way.
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Thats right,im with you all the way with that.
Did JDM sleeve your engine? Or do they use the factory plasma coated cylinder walls. I've looked at there short blocks and considered buying one a couple times. But I was worried about not having a sleeved engine.
I might have never sign on in SVT until 2020 but I have been in the S197 scene since 2009. L&M like any other big mustangs machine shop will have those usual issues with the one off customers but reputation in various forums not just SVT is mostly good, like I said this is the first time I personally heard of any bad experience. That doesn't mean there are none. In comparison MMR is nothing but bad experience and customer service is horrible in just about all Mustang forums is the same feedback. As far as my personal project JDM is my future choice along with Modular Head Shop for heads and cams. JDM even recommended them as their liaison for 5.8 builds.
I haven't heard much negative about L&M other than one member on here, but I think it had more to do with the shop that did the work than L&M. But that thread has been deleted so I don't remember everything that happened. I've definitely heard more negative about MMR than good. I've never heard anything negative about JDM engineering. They seem to be the best.
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