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Hey everyone! I think this is my first post here, glad to be here! Here's my situation , I'm doing an ls swap ( Standard truck motor) 4.8. I ordered it on eBay, for a good deal, with only 85k miles , saw videos of it running glad I did this. What I'm trying to do is pretty much confirm that this engine is a LR4 . While I wait for the motor to arrive, was trying to build my parts list and gameplan. The shop has sent me the truck vin : 1GCEK14V21Z290024, and from the 8th digit that's and LR4. But if you look at the attached pictures, there is a sensor on the timing cover? From what I can find online a LR4 wouldn't have that sensor there. So it has me wondering if the motor was maybe replaced at some point with a newer engine? Or is this a LR4. Im trying to figure it out so I can answer these questions and if anyone knows by looking at the pictures it's greatly appreciated!
-Was it DBW or CABLE ?
-Which ECM to get / harness to get or order
- fuel rail return style or non , so I can either order regulator or high pressure pre filter.
Thanks much everyone, I have looked through sticky's and other posts , hope I won't make anyone mad with this!
Can't tell what sensor you're asking about. Post a pic of it from up closer when you can.
Looks like a 4-bolt throttle body; probably DBC. Looks kinda like it has the flex-fuel injectors.
The heads have been replaced, with ones from a "rebuilder". You can see the little overheat melty indicator thing in the driver's side one, in the freeze plug.
If it's a 4.8, the pistons will be flat-tops, and the block will say "4.8/5.3" on it. They have the same bore, just different strokes and pistons. You should be able to easily see into a cyl with the spark plug out.
What is the head casting # ? 3 digits, outer front corner of pass side head just below valve cover.
Year code in the VIN is "1". I've lost track of the years; what year is that? Came from a vehicle mfd in the US (1st digit of the VIN is country code, "1" is US, most trucks are "3" Mexico); any idea what kind of vehicle it was?
These are the only pics they had, but the front cam sensor I believe is what its called? It's on the front of the timing cover , right by the crank pulley. also wow! I had no idea, I can't tell from the pictures either, I just messaged them asking for the head numbers , so hopefully will have them in a second. they Said the engine came out of a 2001 Silverado 1500, and from online the vin is 2001 as well.
Can't tell what sensor you're asking about. Post a pic of it from up closer when you can.
Looks like a 4-bolt throttle body; probably DBC. Looks kinda like it has the flex-fuel injectors.
The heads have been replaced, with ones from a "rebuilder". You can see the little overheat melty indicator thing in the driver's side one, in the freeze plug.
If it's a 4.8, the pistons will be flat-tops, and the block will say "4.8/5.3" on it. They have the same bore, just different strokes and pistons. You should be able to easily see into a cyl with the spark plug out.
What is the head casting # ? 3 digits, outer front corner of pass side head just below valve cover.
Year code in the VIN is "1". I've lost track of the years; what year is that? Came from a vehicle mfd in the US (1st digit of the VIN is country code, "1" is US, most trucks are "3" Mexico); any idea what kind of vehicle it was?
Well thanks all for the replies lol . The shop just messaged me saying don't bother looking at the photos. These are just all stock photos for them. So I'm an idiot but lesson learned , from now on maybe message them first! haha have a good one
The heads have been replaced, with ones from a "rebuilder". You can see the little overheat melty indicator thing in the driver's side one, in the freeze plug.
This is likely not true, all the salvage yards in my area use these on unopened pull out engines. My last salvage engine had them and I was the first one to take the heads off of it
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Truck motor identification HELP 
