Is it a 5.3 or 4.8

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Mar 7, 2010 | 02:00 PM

metalman

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Staging Lane

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Is it a 5.3 or 4.8

If anyone can help me answer my question I would greatly appreciate it. I have what a guy sold me as a 5.3, but I am wanting to make double sure it is. (I bought it for dirt cheap) If anyone has some info on how to identify this motor I would appreciate it.

Mar 7, 2010 | 02:03 PM

Fb0dy0nly

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From: Detroit ROCK City

Whats the block #? Should be on the front.

Whats the 3 digit # that is stamped on the head on the top corner as well?

Mar 7, 2010 | 02:10 PM

Smoky02

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From: Bossier City, LA

If the pistons are flat tops usually that indicates that it's a 4.8

Mar 7, 2010 | 02:15 PM

metalman

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the pistons are not flat tops. the head casting on the corner are 862 I believe. I would have to go back to the shop to make sure.

Mar 7, 2010 | 02:36 PM

Smoky02

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From: Bossier City, LA

862s came on both the 4.8 and 5.3. If they are dished then it is definitely a 5.3

Mar 7, 2010 | 10:50 PM

Joeyps

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From: clarksville tn

It sounds like you have the heads off if so stick a tape measure down the hole and if the piston is 3.66 inches down then you have a 5.3 if it only is 3.27 in the hole its a 4.8.