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URGANT!!!!! telling a 4.8 block from 5.3

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Old Jun 22, 2007 | 01:44 PM
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Default URGANT!!!!! telling a 4.8 block from 5.3

how can you tell the difference from a 4.8 to a 5.3 with out pulling the heads off? is there a casting number or something on the block that will tell me?

the number on the block says 12567392 and by the dip stick it says s01 and on the head gasket tabs it says 4.8

on my old 5.3 it says s02 and on the tabs on the head gaskets i doesn't say anything.

i sorta need to find out before i put thing thing in. i deffently dont want a 4.8
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Old Jun 22, 2007 | 02:01 PM
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pull the oil pan and look at the part No. on the crank
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Old Jun 22, 2007 | 02:07 PM
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Originally Posted by Tootall
pull the oil pan and look at the part No. on the crank
what parts nmber is a 5.3 and whats a 4.8

thanks
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Old Jun 22, 2007 | 02:24 PM
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ok crank numbers

GM 12

12552216



is it a 4.8 or 5.3?

just need a confermation an if its a 5.3 it will be in the truck!!!!
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Old Jun 22, 2007 | 02:29 PM
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www.mortec.com/cranks.htm
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Old Jun 22, 2007 | 02:31 PM
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I googled it. . .


www.automotiverebuilder.com/ar/eb040538.htm

http://www.ls1.com/forums/archive/in...p/t-44316.html
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Old Jun 22, 2007 | 02:39 PM
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sound it in the first one. its a 5.3 thanks your the best!!!!!

ttly i got a motor to put in !!!
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Old Jun 22, 2007 | 02:41 PM
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take PICS @ !@!@ ! . . . double check your grounds!!!!
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Old Jun 22, 2007 | 02:50 PM
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What happened to your 5.3??
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Old Jun 22, 2007 | 02:52 PM
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Lance what city are you from? Milford by any chance?
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