Fei

Ok I've been researching LT1 swaps all day and I think I've figured out most of the problem points.

The engine should just drop in, cept for the ac compressor. Now I've got a 94 formula with an lt1 and 4l60e tranny. I'm going to be moving and I'm not going to be able to take it with me so I figured I would just swap the engine into my 92rs along with the interior.

Now my RS has a tremec 3550 in it. Do I need to get the prom flashed for a manual tranny? And will I be able to get it flashed for a 5speed?

On last things is should I have everything I need to do the swap since I already have a complete running car to pull from? fill me in please if I'm over looking something

chomp

I'm almost certain that you will need to have the computer flashed to use the manual transmission. I believe you can use the 5 speed.

Deathtrap

I would check Bryan Herter pcmforless.com he can tune your pcm with tranny combo plus taylor it to any mods you may want to do with it in future. He does all my stuff quick turnarounds.

Trans Am#5

It is a PCM, not a prom.
I'd go with Ion at www.madz28.com He is extremely reasonable with his pricing and you do have to get the PCM reprogrammed.
My car did run (very badly) with a 4l60e/Lt1 program. It should fire provided you disable VATS. It will feel like it's more like 75hp and not 285 until you get it reprogrammed.

Fei

Not to nitpick but I was under the impression the the PCM was the "powertrain control module" AKA the computer that controls the car, sort of. Now last I checked computers can not be flashed. Only a type of ROM would need to be flashed. The programmable type to be exact. I would assume that the PCM gets all of the info it needs to start up from the memory inside of it. I would also assume that the memory in the PCM would be PROM since the PCM wouldn't really need to rewrite what it should be doing. It should only need to be changed if I want it changed.

I could be way off base here, and by all means tell me if I am.

No back to the ? at hand... I see that he offers an e-mail type of programming. I can upload these myself with the obdI/obdII cable. Now if I already have lt1edit can I do these adjustments myself or is that a lot for a newbie to take on?

Klortho

93's have to have a chip programmed, starting in 94, you actually program the computer itself using a laptop and tuner cable.

too_fkn_fast

I am new to this board but I may have some valuable info for you. I have done the LT1 swap into a third gen with great success, but there are a few things you need to think about first. What year is the donor mortor? If it a 93 then it is a speed density system. Starting in 94 they went to mass air flow. You will have to get the prom (93) or the PCM (94 and up) reprogrammed for your trans and rear gear. I had this done by Street Performance. I sent it to them and they did it in record time, then ran it for me before returning it to me. cost= $125. I used the Painless wiring harness and trans adapter to hook it all up. You will also need to have a power steering hose fabricated as the Camaro LT1 p/s pump is on the wrong side. You can get an a/c delete pulley from the dealer to clear the frame. If you use the Corvette accessory brackets you can use your original p/s hose and keep the a/c as it puts it in the same location as it was on the original motor. Don't forget to put the cooling fan switch into the right head as the LT1 PCM controls the fan but there is no connection for it in the Painless harness. The manifolds from the LT1 have a 3 bolt flange whereas your exhaust pipe has a 2 bolt flange so you can use the 3rd gen manifolds untill you can get headers and a better exhaust. LT1s love to breath and the 2 1/4 stock 3rd gen exhaust chokes it. You will also need to change the fuel pump to a 45 psi unit as the stock pump is only about 26 psi. The LT1 water pump needs to be modifies to eliminate the extra coolant fitting and plugged. Also the oil cooler lines need to be capped unless you are using an auxilery cooler. If your trans has a lot of miles on it you will be replacing it SOON. My 700R4 lasted 48 hours! I have a lot more info and sorces for parts if you need it.

TexasLT1

too_fkn_fast, good post, and welcome to the board. As you will soon come to realize, there are a lot of us on this board that have done this swap. You will also probably get tired of typing all of that pretty soon, as this is a fairly common question. Everything you posted is good information, but probably nothing he hasn't seen from searching and reading past posts. But, like I said, welcome to the board, its always good to see another LT1 swapper. Do you have any more photos of your swap?

Trans Am#5

It still is a Powertrain Control Module regardless if you remove any other functions it originally controlled. Just because you stop it from doing something, I would think it's still going to retain the name it was given but that may be a matter of opinion. I rarlely (actually never) hear of anyone referring to programming the 'prom' inside of a 4th gen computer but if thats the way you'd like to refer to it, then, by all means, do so. From time to time, people on here actually do search and I have gotten many many emails since my swap has been done with people sending me posts or threads that say 'well here he's talking about this' and 'there he says this'. They are usually the same thing being referred to and a simple interpetation of the correct name for something is taken to mean something different. I posted its correct name so that someone would not think that all that is necessary is to remove a chip and put a new one in its place since they are soldered in place in a PCM unlike how they are held in in the case of an ECM.


Texas....my car is finally back, I'll try and get those pics to you as soon as I get some time.

TexasLT1

awesome, I look forward to seeing it.

I can't wait to get home to mine this summer. Doing a T-56/Spec Stage 3/4.10 swap

Fei

thanks a lot for all the replies. Another ? I have that, I thought of last night. How about the anti lock brakes, Is that swap possible?

Do I need to get the painless harness if I already have a complete car to swap from? Seems like everyone is saying something about it.

TexasLT1

I dont know that anyone has done the antilock break swap except for maybe Fatal88. I would think it wouldn't be too difficult except that the front rotors have reluctors on them for the ABS pickup, so you would have to figure out some way to mount those, plus do an ABS 4th gen rear swap, along with the obvious ABS controller. Your master cylinder should be fine because I'm pretty sure the ABS is completely separate from the master cylinder.

if you have the complete car you shouldn't need a Painless harness.

pasky

ABS?

I hate ABS. I purposely pulled the fuse for it on all my vehicles (Sunfire and Silverado). Its annoying how the brakes pulse, I couldn't imagine wanting to put that on a thirdgen.

Fei

good point... I guess I was a little more worried about needing it for all the PCM to function correctly.

TexasLT1

you don't NEED ABS to for the PCM to function properly, it will work just fine without it. You can disable it in the PCM as far as I know.

Klortho

Never touched the ABS in my PCM and get no SES light with the car running.

92rs85berlintta

iTrader: (1)

Pasky is that v6 fuel pump still working for you? Did it hold up to the cc306?

too_fkn_fast wich water pump hose did you plug??