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Old 05-31-2010, 08:40 PM
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5.3 LSx for $175, great deal?

So, I found a 2002 LSx 5.3 truck motor locally for 175.00. The lady said her ex-husband was paid to pull out this 5.3 with 130K, and swap in a junkyard 5.3 with less miles, 2 1/2 months ago.

She was really nice, and said she drove this truck before the swap and it drove fine, with very little tapping noise from the engine, but otherwise it drove fine. She said she didnt understand why the owner wanted a different engine since this one ran fine.

She said her ex-husband left it there along with some other stuff, and she just wanted it gone.

Could be a great deal right?

After grabbing the crank and twisting it a bit, it did turn a bit so I could tell it wasnt frozen, so I bought it.

After I got it home, I pulled the pan. It looked decent, but a bit dirty, so I then pulled the plugs and turned it over with a socket on the crank. It turns over about 3/4 of the way past a couple of hard turning spots, and DEAD STOP. I turned it back the other way about 3/4 of the way past a couple of hard turning spots and DEAD STOP.

It wont turn past the DEAD STOP, and after going back and forth a couple times, the hard turning spots dont go away either.

Obviously it has worse problems than "very little tapping noise".

Timing chain jumped and pistons hit valves? Valve head broken/burned off and got into piston? Spark plug electrode broke off and got into piston/valves?

I will have to pull the heads to continue searching for the problem.

Moral of the story? Watch out for "really nice" ladys selling the ex's stuff.

I didnt get bit too bad, since I can part out some of it and scrap the rest if its trashed.

I know, I took a chance and got slightly bitten for a couple hundred. Poor me, right?

I guess the worst part is that I try to be completely honest with anyone I (rarely) sell parts to. Honest to a default even if it costs me money since Im not here to rip anyone off.

It mainly bothers me that she went to such an extent, and was very detailed in telling me how good it ran and how little noise it made.

Caveat Emptor. Even with nice ladies.

Mike

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Old 05-31-2010, 09:31 PM
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Wow sounds like your in for a nasty one here. Hopefully there are no loose parts in the block. I have seen a good couple of those type of engines that one of the pistons start to shave into the cylinder wall. I would pull off heads first and go from there.
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Old 06-01-2010, 11:05 AM
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Even if the crank is shot (which it probably is) it's still a good deal, IMO. Put a crank kit in it, and grab an Edelbrock p/n 7118. It's an MSD ignition controller that also comes w/a dual plane intake for something like $650.

With a cam to go w/the above, you got yourself a good engine w/over 400 HP for somewhere around $1200-$1400 if you have a carb sitting around somewhere to use on it.
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Old 06-01-2010, 11:42 AM
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Savage yard price on those motors is between $400-$600 for a guaranteed running one.

They are good engines and with the same done done to a 5.7 LS1 they are about 10-15 hp less.

Jegs sells a 327 crate engine for $5000 with the GMPP intake and the MSD control Box.
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