Looking at purchasing a 93 LT-1 crate motor. How much do people charge for a used but good wiring harness and computer from a 93 Vette? How much for a throttle body?

Thanks,
Speedy

 

I don't know what the harnesses go for, I don't really see them available very often. The computers are available in the aftermarket and are very inexpensive. I'm not sure if a core is needed or not. I'm going to need a harness eventually too for an LT1 street rod project that I'm accumulating parts for. I'll be curious to see the responses on this. Good luck.

 

This is for a rod project as well. the motor comes with injectors, fuel rail. I will not have a core computer so i will need to purchase one straight up.
Thanks for the reply... Any prices anybody???

 

Contact your favorite vendor and ask about Painless Performance's
GM LT1 #60501 harness. They have other harnesses for several
configurations. You can order the optional 60504 version which
provides 4 ft more length.

Jegs has this for $390 under p/n #764-60501

Take note of the VATS requirements.

.

 

Thank you for the wiring harness suggestion. How about the computer pricing... used wiring harness pricing? I prefer to purchase from forum members used items after they upgrade or if they are parting out a car. Please keep the suggestions coming..

Thanks,
Speedy

 

Any reason you wantthe 92/93 harness? I would go with a 94/95 Mass air system if it where me. I am asuming this is a retro fir of some sort? I have done a LT1 conversion before and if you are goos at wiring you can convert the harnees yourself with a good book, Corvette Fuel Injection by Charles Probst is the one I used. If not Jims Performance will convert a LT1 harness to a 3 wire hook up for $200. If you want a corvette harness then post in the forsale/wanted section, thats what I did. If you plan on tuning at all I would again go with the 94/95 ECM and harness.

http://www.jimsperformance.com/index.html

 

I was in need of an engine harness for my '85. I searched around for a few weeks and found a forum member parting out a '86. I bought all the wiring in the car for $200. Seemed like a great deal to me. No computer, but as mentioned above they can be had for little money.

Keep looking in the parts for sale/wanted and you will find someone parting a LT1 car soon enough.

Brian
VTvette

 

I guess I should clarify my situation... The LT-1 is going into a 87 Porsche944S which had an engine fire and toasted everything plastic on the motor including all the sensors and wiring harness. I have the motor pulled (originally a 2.5L I4) and now I am working on painting the engine bay. I am purchasing a swap kit from www.renegadehybrids.com and have located a crate engine with 0 miles on it 5 miles from my house. I will need to locate and install the F-body LT-1 accessory package on the front of the motor to deal with clearence issues. I am in the process of figuring out a fair purchase price for this motor as well as locating the needed parts. The Vette motor needs the F-body accessories but the vette motor is built stronger with the forged internals and 4 bolt mains. The F-body LT-1 is a straight drop in and used 60K mile motors can be found for $1500. So I am trying to gauge how much it will cost me to complete this motor to drop in. I appreciate all the responses so far...
BTW I am completly LT-1 stupid. I have never turned a wrench on one before and don't know much about them but I am willing and ableto learn. On the other hand if you ever want to know about a Porsche 944 I would be your guy.

When the project is done the car will weigh in at 2,800 LBS with the stock 300 HP vette motor in it. It should accelerate pretty briskly with just stock power.

Thanks,
Speedy

 

Cool Project - I can tell you two things you WON'T have to deal with on the LT1:

Timing belt and oil cooler issues!

Just a little 944 humor for you...

I had a late '85 944 a few years ago. What a fantastic car!

Brian
VTvette

 

Ok since I have been down a very similar path as the one you are going let me give you a few tips that will help.

1. get a F-body harness not the Corvette. I had to do exactly the oposite but the assy's are all mounted on the pasangers side of the car for the F-body so the harness for the F-body will place everything where it should be including alt. A/C etc.. as oposed to the Y-body where everything is on the drivers side.

2. You will need the F-body damper. The hub is the same but the damper off set is not and with the F-body assy bracket you will need the F-body hub.

3. Hate to beat a dead horse but I would still recomend getting the 94/95 harness and ECM it will be much simpler IMHO and the only added sensor is the MAF.

4. You will the F-body assys as well including alt A/C comp and P/S pump, if you plan on using all of these.

This is the LT1 I droped into my 84

 

The post above is good news for you, when I was searching I was finding many F-bady harnesses but fewer Corvette harnesses.

Brian
VTvette

 

I bought a used ECM last year on Ebay for 55 bucks.

 

I have a 96 LT4 throttle body that has only about 7,500 miles on it.

I took it off my Vette (which I ordered new) and replaced with a 52mm Edelbrock.

I believe the LT4 throttle body is 48mm compared with an LT1 which is 44mm.

Would probably give you more low end grunt.

PM me if you are interested.

 

The LT1 TB is 48mm.

 

I read many moons ago about the difference in the size of the Lt1 versus LT4 throttle body.

I find it hard to believe that both engines take the same size throttle body.

I will do some research and find out what the exact size is.

 

Is there now difference between the Vette and F-body LT-1 when it comes to the amount of sensors? I thought I heard somewhere thatthe F-body had 1 knock sensor verses the Vetts 2. Is the 94-95 wiring harness less complicated? Is there less throuble with the VARS? That is a good point about the accessories being located on the opposite side of the car and maybe the F-body harness is the better choice. Thank you guys for schooling me.

Torchred... I may be interested in the Throttlebody but I want to wait until after I purchase the donor motor before I start to collect parts. Can you shoot me a price and pic at luemon@ticon.net ?

Speedy

 

That's true about the knock sensor. I just dismantled a '94 F body engine and it indeed only had one. The motor mount bracket is in the way on one side and so the hole is just plugged as on a pre-electronic SBC.