5.3L G-body Cutlass

[veltboy618]

I am doing a frame off resto on my 1985 Olds Cutlass & I really want to do a little engine upgrade before it gets put back together. I'm not trying to race or anything like that... I just want to get better gas mileage & I think it will look better that the engine I had in it so I have been checking out a lot of sites & reading through a lot of different threads about the 5.3L engine swaps & I want to put one in my cutlass. I found a guy on CL selling one for $700 so I went to check it out yesterday. The guy said he was going to put it in his S-10 but lost interest in the project so it has been sitting for a while but it came out of a wrecked 2002 GMC Sierra with 75K. Is there any way to confirm the mileage & is 75K too much? I have the computer with me. Can I take it somewhere to have it scanned to see what information is stored on it? There is a sticker on the computer with some numbers on it... Can those numbers tell me anything about the engine or the vehicle it came in? I will be picking it up this weekend & bringing it home if I can get this thing checked out. The engine comes with everything & looks pretty good. It has the harness, computer, PS pump, Alt, manifolds, starter, fan & some other things. It also has the drive by cable throttle body. I dont remember if the MAF was there or not. I guess I could just buy another one if it's not. I could not spot any leaks or things like that & I see it still have the tabs on back of the heads so it doesn't look like it has overheated. Here are the pics. Tell me what you think!

[veltboy618]

OK guys, I went ahead & bought the engine a couple days ago & lastnight I started labeling the wires & removing the harness so I can get ready to get rid of all the wires that are not needed for the swap when I ran into a small problem. When the person removed the engine & harness they butchered a couple of the connectors off the harness. Hopefully they go to something that wasn't needed anyway. I got a couple of the wires identified. I hope you guys can help me figure out where the rest of them go.

Here are the ones I figured out... These wires were hanging low on the passenger side of the engine so I figured they went somewhere over there. Crank position plug is missing & the oil level sensor is broken.




The Purple wire goes to the starter

The yellow/blk wire is the ground for the Crank position sensor
The Blu/Whi wire is the sensor signal for the Crank position sensor
The Lt. green wire is the B+ supply for the crank position sensor

The Brown wire goes to the low oil level sensor

Does anyone know where the black wire go?

[garys 68]

Black wire goes to ground. You can cut it off.
You need to get the 5 page color wiring diagram. Start over at LS1tech for an 01-02 5.3/6.0 wiring diagram with mechanical TB.
http://ls1tech.com/forums/conversion...-diagrams.html