Help determine a year of 5.3 motor?

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Jan 19, 2014 | 01:37 PM

kodyowenby10

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Help determine a year of 5.3 motor?

Im looking at a LM7 guy swares up and down it came out of a 05 truck but it does not have flat top pistons has single feed fuel line 706 heads blue/green ecm connectors and is drive by wire. The only thing it doesent have is ecm. The only number I cant get to cross on it is sticker on back of drivers side head 10WCJK043452079 is there a way to check this number and maybe figure out a year of the motor?

Jan 19, 2014 | 03:41 PM

ls1nova71

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From: Liberty, MO

A 4.8 would have flat top pistons, a 5.3 would have dished, so the seller is probably right.

Jan 19, 2014 | 04:01 PM

kodyowenby10

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what about putting a year on it to know if its got the better rods?

Jan 19, 2014 | 04:04 PM

Jason454

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From: hampton,mn

It's usually the 10th digit of the vin tells year.

Jan 19, 2014 | 04:44 PM

kodyowenby10

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truck it came out of is gone only thing to go by is number on white sticker on the head the number on block only shows it is a 4.8/5.3 block

Jan 20, 2014 | 07:23 AM

Old Geezer

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From: GA, USA

Look..

Quote:

Originally Posted by kodyowenby10

truck it came out of is gone only thing to go by is number on white sticker on the head the number on block only shows it is a 4.8/5.3 block

Around the filter area/rear of dr side of the block. Should be a VIN lasered there.
If it still has the trans on it, that same # should be lasered on the bellhsg on the dr side.