Hi all, I have a 95 Chevy 4X4 with a 350 TBI and 4L60E trans. I just Bought a Killer 350 TPI setup complete Engine Injection and ECM / Harness.
The TPI setup was in a 5 Speed Manual, from a 92 camaro.
What ECM should I think of using in order to keep my 4L60E and use the TPI system?

I don't think that the Camaro ECM has provisions for tranny control but it has the custom chip for that motor. (Unshure what part Number ECM's I have as I have not gotten them out yet)

I was thinking a 95 Camaro 350 TPI had the 4L60E trans but info is sketchy on the part Number the ECM is, from what I have read so far. There seems to be 2 that could work, but I was "Hoping" to use the Engine Prom sence it is calibrated for this engine. I know I can not though as there is NO trans coding in it.
Any Thoughts???

 

An ECM from a 95-97 camaro might work, but require some mods to accomplish. You might want to check into the 4th gen camaro boards to verify this. One problem is that your TPI setup was a MAP system, and the LT1 was a MAF, so you might have to swap sensors around and plumb a MAF. One other thing is that the TPI motor you pulled the intake off of was a 305 (since it was a 5-speed), so it has the smaller 19 lb injectors instead of the 22-24lb used by 350's

The other thing would be spark control, the 95-97 camaros used an optispark distributor the connections probably won't interface with a standard distributor at all. The bad thing is that the optispark is also the crank sensor on these cars, and therefore injectors will not fire if you just run a standard small cap HEI to solve the problem.

The LT1 used an electric AIR pump as well, not sure if will freak out without it there.

The easiest option is probably just to swap an older 700-R4 into your truck, the stock camaro ECM will be able to lock the convertor, and you'll still have overdrive.

One other thing to check into if you want to keep your trans would be an ECM from a 96-up Vortech motor. These used a more standard distributor setup and had port injection with a 4L60E. However, since your trans has a 4L60E from 1995, without OBD2 electronics, it may prove to be a hurdle as well. These operated with Mass Airflow sensors as well, so this will be an issue too.

Personally, I'd just swap a 700R4 in, you can snag one off of another TBI truck, just a couple years older.

 

Thanks for some insite here, The Car was a 305 true but all of the injection system has been built to match with the 350. I am unshure what Injectors it has (yet) but the engine was tested to be around 425Hp from the speed shop it was built at. They also custom burnt the chip for the ECM to match with that motor. (This guy was serious about doing it right) But now he is shooting for 800+ Hp with a Stroker / Carb setup so I got the whole thing at a nice price.
700R4 was my next thought but..... More Money
I have heard that there is a way to piggyback the 2 ECM's but I was wondering How that would work???? The one in the truck would only control the trans and the one from the camaro would be just engine control. Would I have to somehow edit My truck PROM to not look at the engine side of leave it alone??
Am I way off base with this thought or could it work?

 

I really can't comment on the piggybacking of the two ECMs, but are you changing the cam/heads/exhaust on your new motor to match with the former tune? If not, then it will be quite far off, a high RPM intake and tune won't interface well with the stock ~4500RPM cam and TBI heads. You'll have to change the PROM, and even then may not run great at low RPM depending on whats done to the intake. At this point however, you probably would be fine with the stock trans, and piggybacking may be your best option, assuming it costs less than a 700R4. Hopefully someone here knows something about this

If you are changing the top end to kick out 400+hp, then the stock 4L60E will burn out quick- I couldn't keep one in my 95 T/A, and that was just a bolt on car that saw some street racing. So, you're at replacing the trans anyhow at that point, or you will be soon, and the stock parts are available for your swap at a junkyard. A built 700R4 is also cheaper than a built 4L60E.

Hope it helps!

 

so you know, because this really isn't thirdgen related, this may get locked.

like Detroit_Z28 said, if your going to be putting a lot power through the trans, don't expect it to last too long. you may want to look in to a 4L80E.

you can setup the 4L60E ECM to be trans only.
you will need to make some changes.

i believe one of the TBI/4L60E ECMs can be set to run a port fuel motor.

https://www.thirdgen.org/forums/diy-...ighlight=4L60E

im not promising anything, but i think how to do a stand alone trans controller is mentioned in one of these 2 threads,

https://www.thirdgen.org/forums/diy-...-its-time.html

https://www.thirdgen.org/forums/diy-...de-6026-a.html


these are also worth a read,

https://www.thirdgen.org/forums/diy-...ighlight=4L60E

https://www.thirdgen.org/forums/diy-...ighlight=4L60E

https://www.thirdgen.org/forums/diy-...ighlight=4L60E

http://www.edgesz28.com/edgesZ28/sub...urban-home.htm

you may want too look into learning how to burn your own chips if you don't already know.

 

In my opinion, the clear choice is the 12200411 LS1 PCM. Please read the details in the first sticky or use this link: https://www.thirdgen.org/forums/tpi/...-opinions.html

 

Thank you all for your input on this, I see a LOT of reading in the near future for me.
But I have to answer one of the Questions asked. I bought the Whole Engine Wiring Harness ECM Fuel Pump ect... this is from a 92 Camaro that was built for a friend of mine. The Whole mess is going into my truck "Complete Swap"

Yes this is not thirgen BUT this is the only place to get decient help on performance issues IMO. I also tried the chevy truck board and I got a lot of, well it could, or if you do post your results ect... They mentioned trying here as all of the parts going into the truck are from a camaro.
Well I am off to read till my eyes bleed then crash and do it again.

Thanks for all of the input you all have given to me I am shure I will ask more as the time gets closer to doing the swap.

 

you'll get used to your eyes bleeding, i did. now i don't even notice it

i glanced through some of the threads i posted, i saw mention of running TPI with a 427 ECM which is what i think you have. if you can use your current ECM, it should save you some time & work getting the hardware part setup. im pretty sure you can move some of the tables from the TPI chip to the TBI chip. a search in DYI PROM may turn some info about it up.

i think you will definitely want to learn how to burn your own chips.
unless they tuned it on a dyno & did part throttle along with WOT, there is still more in the chip. plus these is some gas mileage to be had too, but thats true with any aftermarket or factory chip.
its amazing just what all you can do.

i have thought about moving to a newer OBD2 PCM. one day i'll move up because of all the things that can be done with OBD2, better fuel control & sequential fuel injection, better spark management & no distributor with individual coils, & the list goes on. but right now i don't want to lay out the cash for the tuning software.