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trying to identify 4.8 vs 5.3 at junk yard

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Old 10-27-2014, 07:10 PM
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Default trying to identify 4.8 vs 5.3 at junk yard

Well I stopped in at a pick n pull junk yard on my way home from work today. I am thinking about getting a 5.3 for my 86 k10 since the engine is in need of a swap. I was wondering around and found a couple trucks with 4.8s and a couple with 5.3s. There were 2 or 3 trucks with a lot of the front end taken apart that would be easy to get the engine out of. But there was nothing to indicate if it was a 5.3 or 4.8. Is there some were on the block that will tell me?
Old 10-27-2014, 07:25 PM
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Blocks going to tell you it could be either.

8th digit in the vin


V= 4.8

T= garden variety 5.3

B = L33 Aluminum block 5.3

N= Lq9 6.0

U= LQ4 6.0
Old 10-27-2014, 08:45 PM
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Usually the 4.8L/5.3L casting on the block has a paint mark on which it is. This one would be a 5.3L:

Old 10-27-2014, 10:57 PM
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Originally Posted by The stunningman
Blocks going to tell you it could be either.

8th digit in the vin


V= 4.8

T= garden variety 5.3

B = L33 Aluminum block 5.3

N= Lq9 6.0

U= LQ4 6.0

Don't forget...

VIN Z= Flex Fuel L59 5.3
Old 10-28-2014, 08:31 AM
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Thanks for the info guys.



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