5.3 vortec VIN location?
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Joined: Mar 2002
Posts: 255
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From: Erie PA
Car: 2008 Silverado, 73 LeMans, 1987 GTA
Engine: 4.8, 350 Pontiac, 350 LT1
Transmission: 4L65E, TH350, T56
Axle/Gears: 3.42, 2.73, 3.42
5.3 vortec VIN location?
as title states, where is it? ive done alot of searching on the web and cant find anything. i know the casting number is on the drivers side back of the block on an ls1, so im assuming that is the same, but no info on where the VIN is...
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From: Antelope, CA
Car: 89 IrocZ/17 LS 1LE
Engine: 383/LGX
Transmission: 400/TR-3160
Axle/Gears: 3.08/3.27
Re: 5.3 vortec VIN location?
Im guessing you wanna know if its a 5.3 or a 4.8? I had one of each and from the out side they look the same. they use the same block and heads. I never seen a VIN on either. the block has 4.8/5.3 cast into it and is supposed to have a paint mark next to what motor it is but I never seen that either. you have to pull the head and look at the pistons, flat top=4.8, dished=5.3. I also heard you can pull the pan and check clearance between the crank and windage tray. the 4.8 has almost 1/2" clearance while the 5.3 is real close.
Last edited by kairles; Jan 2, 2009 at 04:01 AM.
Thread Starter
Joined: Mar 2002
Posts: 255
Likes: 0
From: Erie PA
Car: 2008 Silverado, 73 LeMans, 1987 GTA
Engine: 4.8, 350 Pontiac, 350 LT1
Transmission: 4L65E, TH350, T56
Axle/Gears: 3.42, 2.73, 3.42
Re: 5.3 vortec VIN location?
no, i actually need the "serial number" as its called of the engine for the shipping company. i know how to tell if its a 4.8 or 5.3...
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