Well, Opti #4 just died and I am biting the bullet to do the 24x conversion. I have sourced the majority of the parts and am wondering which coils to go with. I have read tons of articles about the subject and it seems like there is no clear choice. So I ask you guys.....Which one is best?

Round tuck coils, square coils, oe, aftermarket?

Money isn't an object. So?

 

Everyone says the round heat sink truck coils are the best. I asked efi connection about this and they said they haven't seen any data that supports this claim. They said they've had plenty 800 hp builds that run stock f-body ls1 coils without issue.

 

If you aren't competent enough to make an opti last what makes you think you can handle this mod?

 

LS1 plug and play stuff always is easier than actually thinking/diagnosing LT1 stuff.

I run regular old LS1 coil packs. Just do not go aftermarket.

 

Last motor I had was. 13:1 lt4 and I did a 24x swap cuz I would blow a optimization in 50 miles. I went with the 24x swap. .wasn't very satisfied . I only put on like 100 or 2 miles before I pulled the trigger on a ls2 swap.. I say if money is no object than buy a ls motor.. here's my old motor in a buddies car for sale. http://madison.craigslist.org/cto/4657895320.html

 

http://madison.craigslist.org/cto/4657895320.html

 

Yes, the round bodied truck coils with the exposed heat sink has more voltage & joules output.

HOWEVER, it's been debated many times that they provide a HP improvement.

I upgraded to them on my TA and I will say the engine is more responsive. The forced induction guys usually step up to this coil also.

Having said this, any LS2 and up coil will do you well. The original LS1 coils were the least "performing" of the bunch.

 

Logical, can't make something work so ditch it for a stupid simple lego set of a motor.

Hurray.

 

About your upgrade to 24x, I believe it to be a worthwhile mod.

I also had Opti issues when I had my '94 Formula and I went with the LTCC system-which fixed my problems-along with a MSD Opti.

Some folks have great luck with the stock Opti system, others have nothing but problems.

If I were to tackle a LT1 car today, first on my list would be a full 24x conversion.

 

What are you sayin? You can't make your optijunk work so you are ditching it for ls coils..and I never said it didn't run good with the 24x. I said that I just wasn't satisfied, I was just suggesting putting that $ toward a ls swap. And a lego motor? Why you trying to rob ls parts to put on ur lt and then go and bash it. ..? No need to get but hurt, you were having the same issue as me and I told you what I did along the line and my end results.

 

An LS swap doesn't always solve problems... If you can't get an LT1 to run right on the stock ignition or a 24X setup, you shouldn't even be working on cars.

That said, I will someday go to 24X but ONLY because of the tuning, my Opti has never given me fits and I beat it like a redheaded stepchild.

OP, the truck coils is where it's at. GM only or at least a junkyard set.

 

Thanks for your kind words, but you have failed to provide your expert opinion on the question that was asked.

 

Car was running great, MSD opti #3 has failed and I'm tired of swapping. I have been wanting to do the 24x for quite some time, but been hesitant because of the MSD opti. I want to have more flexibility in tuning because of the changes that I'll be making in the future.

 

Again the ls swap didn't solve my problem,my car ran good after the 24x swap, but I still wasn't satisfied. .. optics are unpredictable. .. my dad has a 97 firehawk with 100k miles, stock opti and he drives it kinda hard no problem.

Now my 97 with lt4 13.1 motor would spin ANY opti. And had 480 rwhp ..

So my thought is if you cab afford to make enough power to keep blowing optis than you may as well invest in a 24x swap.. I just wasn't satisfied because my power goals were way over 480 hp.

 

I appreciate your input. If I wasn't having such bad luck with MSD's I'd stick with the opti and get a Delco unit. However I don't want to keep spending money on temporary fixes. I am looking forward to better tuning with the new setup.

Once again thanks for your input

 

Right on well Kyle (the guy selling that car with my old motor is a gm tech if I'm right and he's got a nice shop of his own, he's got a new vette that he's supercharging, he's got a procharged camaro,cts v. I'm sure he's on here some were, maybe he will chime in about your question on which coils are best for what your trying to do,,

Btw I'm suprised that camaro hasn't sold, that motor has less than 5k miles and a 24x swap