These should get you started with the 24x re-pin. I had these from a while back, someone may have something better or more recent.

 

thank you agreed I been trying to figureit out with everyone doing the conversionbut if its not broke dnt fix it I say. I do likr the way the 24x looks

 

96 i agree and dnt think you are a ls hater at all. You are one of a few on here that will give ur honest open opinion regardless of popularity. I for one wld love to do a dollar to hp chart for this subject right here it gets brought up every wk, i own both a ls ta and a lt ta i dont think u would be that hard to put some figures together.

 

Damn I Lost My Title! LoL
Jokes aside The benefits to the LSx PCM is More shops will tune them & you can rev past 7050rpm!! The cost is around 2grand if I remember right!!! If you maintain your ride & replace **** when its supposed to You dont need it! A 396 LTx with a nice cam will keep you under 7000rpm & pass smog before a 350 thatll rev to 8000rpm!!!! IF you want more after the 396 & supporting mods Turbo or Supercharge that bitch Nuff Said

 

The swap is not 2k or even close to that if your smart and source your swap parts used. I think i had just at a 850 into mine which later came down to half that after i sold my working gm opti, coil,icm, wires, and pcm. If you build your own harness which is very easy to do you save yourself 750 right off the bat. So if you think by the end of it i maybe out 4-500 bucks i cant see why anyone would want to put another opti back in its place if your replacing it. Everything about this swap is lightyears ahead of the stock lt1 system.

 

+1. I'm not looking back as well. I've had my share of optispark failure. It's usually rotor failure in the higher rpms. Other times just moisture. And I use only GM optisparks. Now with the 24x conversion, with coil on plug, no worries failing because there are no moving parts that will wear out.

 

So it is POSSIBLE to do it cheaper but I bet most still spend $1500+. How about we talk tuning software prices and figure that into the cost?

I am not saying it has no place. I am saying that as with so many other things newbs are inappropriately told expensive things are "necessary".

For everyone going fast with a 24x setup I bet we can find someone going faster on a stock opti with a comparable setup or even an otherwise disadvantaged setup, heavier, less displacement hydraulic cam etc.

 

Who said anything about by having the conversion done, that you will be faster? I believe the OP wanted to know just the pros and cons.

 

Agreed! But it's in our nature as hotrodders to always turn any conversation in to bench racing!

 

This may be a milestone... Bit i think this is one of the very few times ....if not ONLY time I can say....I agree with caprice.... Phew...it almost hurt to say........

 

Hell might be freezing over, I think you agreed with me in another thread earlier this week.

Too often people only want to talk about how great something they bought is, not what it actually did for them, not the surprises and hurdles along the way, not any alternatives.

IMO if the LT1 pcm is too difficult for someone to deal with then this conversion is too hard to deal with.

 

OP: Do you already have a t56 behind your LT1 or are you going to have to buy one regardless of which engine you use? Parting out that LS1 car would sure generate alot of cash to put into building a nice LT1. Or if you decide to go LS1.....I think your best bet would be to part the LS1 car and selll your LT1 car.....then roll that combined money into buying a nice LS1 car.


I'm currently happy with my opti and obd1 conversion, but I am interested in the 0411 pcm & vortec distributor conversion that boostedAFR did himself. Another member (Tinbender maybe?) did the same thing with an LT1 in a truck.
I like that I have a friend who tunes my LT1 for me for free. We do what we can to help each other out. I do think about the possibility that my tune could be better (??) or that if I want a dyno tune then I don't even know who could do one around here. As far as tuning either system myself.....I don't know how and my tuning friend and I don't have schedules that allow him to teach me.

 

If your going to compare tuning software prices compare what the software prices and pcms are capable of.

You get custom operating systems, and real time tuning with the lsx pcm.

For some people the 24x is a better, for instance there isnt a competent ltx tuner anywhere near me. I would have to spend what it would cost for the conversion to haul my car across state lines and have it tuned.

There are people out there who have spent more than what the 24x conversion would have cost to tune their ltx when it wouldnt have taken hardly any time at all to tune it with the lsx pcm.

Now, with that said there are probably people out there who have went 24x when they didnt have to, but in the end they have a better ignition system. Now there shouldnt be any or very minimal gains in power from the 24x unless their car was not running right to begin with.

The LTX system is up to most tasks, but there is no denying that the 24x system offers the LTX gear head a LOT in the BIG picture, because in the end we all never stop modding our cars at least until they are rediculous in some form or fashion. At that point it is beneficial to have already been running on the LSX PCM.

Now, with that said- I am not biased in any way. I LOVE GM cars, and will ALWAYS be partial to the LTX. There is NO denying that the 24x conversion is one of the greatest things to happen to the LTX community. In some instances it is a BETTER choice to go 24x than keep the opti. Period. However, I am sure there have been people that have needlessly done the conversion.

 

Far as tuning I have always just emailed datalogs to a professional and then made tweaks myself. If you compare bowtienut's car to mine yes I have some room to improve but how many f-bodies that are 600lbs lighter than my car and slower with heads and cam do have a dyno tune? I would guess a LOT. People spend money on "cool" parts rather than parts that really work.

The system has it's place but as with so many other things people are too quick to jump on the bandwagon.

If I wanted to turn north of 7000rpm or wanted a good 2-BAR setup I would consider it, but then I would also consider an aftermarket system that adds wideband and other capabilities.
Lately it seems that everyone considering a cheap 355 setup thinks they "need" this kit.

 

They may not need it, but it does open their horizions immensely and sets the stage for them later in the game. The 24x conversion can be done for less than 1500 depending on how you go about doing it. Or you could go 58x and gain even more resolution.

The kit just brings many things, and convenience is one of them. Most people do it to get rid of the opti, but some do it for convenience in tuning.

I tried the data log route with a VERY COMPETENT tuner, and that was epic fail. I then went 24x and got a dyno tune, but that is just my experience.

 

FWIW, when I had my '94, I went with the LTCC setup. It retained the Opti to run the PCM but pulled the high voltage stuff out of the distributor. The engine ran pretty good after the change.

While I agree with 96Caprice, doing the 24x mod would be a good thing. If I had a LT vehicle today, I'd surely go to 24x.

 

Let me know if you need any help if you jump on the conversion. I've got all the information you'll need including the color-coded Excel spreadsheets on the pin outs.

 

i think the thing that 96 is saying which i to agree with even tho i, running 22lbs of boost run a 24x set up dont think its necessary for everyone to have it. I definatly think its one of the last mods on the long list of stuff to do. This user came on here origanally asking if 24x changed the sound and as far as i or anyone know both of his engines are bone stock so wld 24 x be one of the first 5 -10 mods i wld do no way. i wld hope that ppl do the 24x mod because there obd1 or 2 cld lo longer keep up and not just because there sick of a opti. The second thing i wanna clear up is a guy that thinks that a 24x is gonna change the sound of his car is not gonna be able to do his own repin to save himself 800 bucks on a harness. I also wld like to know who is selling there used opti $80 pcm $60 icm??? and wires for half the cost of a 24x system? I have done a bunch of figuring and i cant figure out how even repinning u still have $800 in the 24x system then u still have coils and mounts and the 0411 pcm which is $200 plus tuning which is not cheap so im not seeing anyway where 24x doesnt cost at lease $1k even with selling ur unused opti,pcm,etc....... I think all of us agree inculuding 96 that there are benefits to 24 x but does every body that wants to build his or her lt1 need to do it HELL NO!!!! Call a place like pcm for less they have countless customers that have evrything from H/C/I to FI to NA that make 450rwhp if not more and then take all the people use other tuners that are out there, and the count less others that use tunercats or one of the other very cheap tuning softwares out there. Surely all these people are not having problems with there cars. Thats my just my 2 cents which together with a bus pass might get u somewhere. Good Luck Sir ..........ur gonna need it.

 

BP Automotive I don't know who you used for tuning and I am NOT asking you to name names. A HUGE problem is second rate vendors get top notch names by being friendly with everyone who calls. You probably used a second rate vendor who's reputation was far better than his actual abilities or who CAN do a good job but most of the time chooses to halfass things. Both scenarios are quite common.

Far as the ability to get a dyno tune locally the software is cheap for an LT1 buy it, leave your laptop with the local dyno guy for a few days so he can look over the software and then have at it.

 

Just out of professional courtesy I cannot say who it was, lets just say they are one of the biggest tuning companies in the nation. And they didnt even offer my money back.


Personally, I think there should be more people looking into it because as time goes one its just going to become increasingly harder to find a good LTx tuner, eventually it will become hard to find a well made opti.

lt1needingboost not all new 24x harnesses are $800

I also offer a repin service for those on a budget, or a new one for those wanting a new one.