need help on engine info

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12-11-2007, 09:41 PM

383lt1impala

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need help on engine info

about 2 weeks ago i got a motor off a 2003 yukon and it says on the back of the block 4.8/5.3 does anyone know what size motor it is and if it is any good i want to stick it in my s10.

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12-11-2007, 09:43 PM

Smokin00WS6

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I think the basic yukon that year was the 5.3. My dad has an 02 and its a 5.3.

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12-11-2007, 09:44 PM

383lt1impala

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yeah alot did come out with that motor but i checked it out and that year they came with the 4.8 5.3 6.0.

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12-12-2007, 01:49 PM

HandsomeBWouderful

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I don't suppose you have access to the RPO list on that Yukon do you?

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12-12-2007, 05:54 PM

383lt1impala

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naaa i dont i guess my best bet is taking a head off to see what pistons it has

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12-12-2007, 06:01 PM

HandsomeBWouderful

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Chances are that if the Yukon had lots of options. (ie it was an LT or LS) then it has the 5.3. I had a base model Tahoe that had the 4.8. The 4.8 sounds better so if you have it that will be your consolation prize.