5.3L G-body Cutlass

veltboy618

Weekend Racer
Nov 12, 2009
73
0
0
Granite City, IL
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 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 on 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? 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 don't 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!



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veltboy618

Weekend Racer
Thread starter
Nov 12, 2009
73
0
0
Granite City, IL
OK guys, I went ahead & bought the engine a couple days ago & last night 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.
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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

Dose anyone know where the black wire go?
 

79loserbluebu

Frequent Racer
Jun 15, 2009
302
0
0
Illinois-60491
Just looked it up, the black wire also goes to the level sensor. You don't need the level sensor just incase you were unsure.
 

veltboy618

Weekend Racer
Thread starter
Nov 12, 2009
73
0
0
Granite City, IL
79loserbluebu said:
Just looked it up, the black wire also goes to the level sensor. You don't need the level sensor just incase you were unsure.

Thanks! Is the diagram you used online? If so could you post the link
 

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