In reply to TheV8Kid:
Carb replacer.
In reply to TheV8Kid:
Carb replacer.
In reply to Stefan:
Well I was way off what I thought it cost for a ms3 pcm. I apologize, I must have not remembered correctly.
You make a strong argument. What do I gain from ms2 to ms3? Are there any helpful guides detailing this particular application?
and here's a basic set of articles for moving from a carb'd 350 to a TBI to MPI using MegaSquirt:
In reply to Stefan:
I appears as though I would have to do wasted spark with MS2. Is that correct?
I really appreciate the help. Thanks!
You do not have to use wasted spark. But you are limited to 4 ignition outputs with an MS2.
Wasted spark does not give up much unless you are doing gonzo boost, but then you could do wasted COP.
Im sure they work fine. A friend has holleys self tuning pcm and wiring harness on his pretty wild ls build. On his first start up you could hear it smoothing out as the computer was figuring everything out. He said its awesome.
But when doing an LS especially a build without anything crazy, i can't see the benefit over a custom built harness and a stock pcm. Lots and lots of tuners are familiar with the gm pcms and HPtuners. There are plenty of companies/individuals who will build you a harness.
If you plan on messing with the motor a bunch, the self tuning might be nice.
In reply to Opti:
I am actually leaning towards the stock pcm. I talked with my dad and I may be ready to give it another shot. I have plenty of parts, and have the know how. I just have to do it.
My issue is lack of trans control versus a gm computer. One of the advantages to an LS swap is the corresponding overdrive transmission. I know you're not concerned there right now, but if there is a point in the future where you think "man, overdrive would be sweet on drag week between tracks" or "i'd drive the studebaker more if i could cruise more comfortably on the highway" then stay GM.
I'm still learning hptuners but at this point ive got 3 swaps under my belt, all of which run great and none of which have blown up yet.
I can help some on that end, and i scratch built the datsun harness out of a chopped to 4 chunks van harness. Leaving one intact and just pruning out the non necessary stuff should be simple by comparison. I located a $550 99 4.8 2wd truck that i hope to drive home saturday. From there im going to do one truck harness to stand alone, make a materials list and try to pull them at the yard anytime i see one to have one ready to go at all times.
patgizz wrote:TheV8Kid wrote: The one article I read said +29 horsepower too.Versus your dad tuning a carb, I would guess no gain.
From what I have seen of how many people tune carbs, it's probably +129hp as well.
bentwrench wrote: Throttle body injection is a half measure. Wetted walls, puddling, & fuel distribution issues are unresolved. Port injection solves these issues.
This is true, however good TBI setup will still allow you to do things that you can't do with a carb without an intricate knowledge of how all of the different bleeds, orifices, emulsion jets, and such work.
Some people are really good at this. They are in the minority. (I say "they" because I won't claim to be one of them! I can move jets around and play with PVRCs and transition slot heights but that's about all of my repertoire) It's really, really easy to get up to that level with a computer controlling things, though.
patgizz wrote: My issue is lack of trans control versus a gm computer. One of the advantages to an LS swap is the corresponding overdrive transmission. I know you're not concerned there right now, but if there is a point in the future where you think "man, overdrive would be sweet on drag week between tracks" or "i'd drive the studebaker more if i could cruise more comfortably on the highway" then stay GM. I'm still learning hptuners but at this point ive got 3 swaps under my belt, all of which run great and none of which have blown up yet. I can help some on that end, and i scratch built the datsun harness out of a chopped to 4 chunks van harness. Leaving one intact and just pruning out the non necessary stuff should be simple by comparison. I located a $550 99 4.8 2wd truck that i hope to drive home saturday. From there im going to do one truck harness to stand alone, make a materials list and try to pull them at the yard anytime i see one to have one ready to go at all times.
Yeah. You may be right. Like I said before, I have one stock harness conversion under my belt. I just want this one to be better looking than the last one.
Completely unrelated question to this thread. Can a 4wd 4l60e be converted to 2wd?
Output shaft and tailshaft housing. Problem is the whole of the guts need to come out to get to the retaining clip for the output shaft
Fantastic. Well I'm probably not doing that.
What trans is the studebaker running cause im pretty sure people are running 4l60s and 80s of the ls1 pcm.
They also control them via MegaSquirt:
Stefan wrote: They also control them via MegaSquirt: MegaShift
I's beyond my abilities, but I'm hoping someone figures out how to run a 5HP24 with MegaShift.
TheV8Kid wrote: Fantastic. Well I'm probably not doing that.
Its not horrible, but i've done much easier things.
Best deal is sell 4x4 trans and buy 2wd one. My next swap donor is an 07 express 6.0/4L80e. Was going to put it back on road as work van but needs too much work around the drivetrain. It was a chemical hauler at some point so the body is great on the outside but the floor is falling out from under the mat in the cargo area.
Opti wrote: What trans is the studebaker running cause im pretty sure people are running 4l60s and 80s of the ls1 pcm.
It has a piece of junk turbo 350 that came out of my six cylinder nova. I mean that in the most endearing way possible. I may just leave it until it breaks, because it doesn't owe me anything, and it probably won't take long, but the 4wd 4l60e is my brothers, and he is trying to sell it. I figured I could buy it and convert it, but it sounds like too much trouble for what it is worth.
In reply to TheV8Kid:
2wd transmissions are easy enough to find for low enough cash that it really doesn't make sense to convert one to the other.
Now, if you were rebuilding it anyway, then sure.
Agreed.
Another question along the same vein. How much power can a 4l60e take? How about 4l80e?
I put about 450 through a 65e at the challenge on the bottle and it didn't get angry, but not sure how long it would last with a steady diet of that. I aim to find out 
.
4l80 are beefy, its the th400 of overdrives.
4l60es seem to die pretty regularly in hopped up fbodies. Apparently its pretty hard to build one to live behind a lot of power, lots of the guys having them rebuilt have same problems over and over.
4l80es are supposed to be strong right from the factory.
Stefan wrote: They also control them via MegaSquirt: MegaShift
We have an easier option out now as well.
Does anyone know how well a FITech system would work on an autocross only car? My car will not be street legal, so it will only run to get on and off the trailer, and do 3-5 runs. I feel like this won't be enough time to self tune. I also worry that it will lose the memory when I kill the main power. Are these legit concerns?
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