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Thread: how to tell a 5.3 from a 4.8
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02-18-2009, 11:58 AM #1Sr. Engineer
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how to tell a 5.3 from a 4.8
my friend wants to buy a silverado... he got this one down the right price and all..
the seller says its a 5.3 .. but the car fax comes back as a 4.8 how can we tell... were going to look at it tonight ...08 5.3 silverado...toyo m.t 33 12.50 18 rockstars...leveled with 2" blocks...cherrybomb catback...6k hids
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02-18-2009, 12:10 PM #2Legend
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How to tell5.3 or 4.8
If you have vin#s your local GM parts dept. can tell you. I had a list of #s, if I can find I will post them.
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02-18-2009, 12:13 PM #3Newbie
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how to tell a 5.3 from a 4.8
When you look under the hood there will be a few stickers in the front. One of these stickers should say the the correct info i.e. year, liter size, etc.
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02-18-2009, 01:27 PM #4Legend
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Ditto on the VIN# , it will tell you just about everything from gear ratio to paint code!
Adam
2005 Z71 Silverado Crew Cab
previous:
'97 Chevy Suburban LT
'94 GMC Sierra SLE
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02-18-2009, 02:02 PM #5Jr. Mechanic
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it is the 8th digit of the vin. What year is the truck? This will tell you exactly what it came with because you can not change it. If it is a 2000-2006 and the 8th digit is a T then it is a 5.3, if it is a U then it is a 6.0 a V is a 4.8 and a W is a 4.3V6
2008 Silverado, 5.3, G80, Extended Cab, California package, 20's, Direct trend motorsports 3" muffler dumped, Volant/CSI cold air intake, 2005 Preadtor Troy Lee Edition
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02-18-2009, 04:22 PM #6Jr. Apprentice
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Originally Posted by steves86ta
What if it is a 2006 and the eighth digit is a B?--------------------------------------------------------------------------------------------
2006 Silverado 1500 Z71: K&N FIPK, true dual flowmaster 40, superchips cortex, window tint and audio mods, CB, TBS, sprayed liner/box
1967 c10: frame-up rebuild with crate 350, too much to write
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02-18-2009, 05:00 PM #7Sr. Engineer
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thanks .. hes on his way home from work then ill post the vin..
08 5.3 silverado...toyo m.t 33 12.50 18 rockstars...leveled with 2" blocks...cherrybomb catback...6k hids
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02-20-2009, 05:36 PM #8Jr. Mechanic
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I believe that is a flex fuel 5.3 but dont quote me Originally Posted by tgrfn787
2008 Silverado, 5.3, G80, Extended Cab, California package, 20's, Direct trend motorsports 3" muffler dumped, Volant/CSI cold air intake, 2005 Preadtor Troy Lee Edition
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02-23-2009, 03:19 AM #9Jr. Apprentice
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I figured it out, the B means the L33 5.3 SFI engine, T is for the LM7 5.3 SFI, and Z is for the flex fuel 5.3 with MFI... The difference between the B and T 5.3's is that the B (L33) is rated for 310 hp while the T (LM7) is rated for 295, but both offer 355ft/lb of torque. The power difference comes from the fact that the L33 is the aluminum block version of the LM7, otherwise they are mechanically identical. Originally Posted by steves86ta
Turns out I have a L33, which I guess is lucky for me because I always assumed I started out with 295 hp.
This is the website for the 2006 GM vin cards:
http://service.gm.com/dealerworld/vi.../vincard06.pdf
you have to have acrobat reader to view them.
Likewise you can view the vin cards for any 2000-2009 vehicle from this site:
http://service.gm.com/dealerworld/vincards/Last edited by tgrfn787; 02-23-2009 at 10:13 AM.
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2006 Silverado 1500 Z71: K&N FIPK, true dual flowmaster 40, superchips cortex, window tint and audio mods, CB, TBS, sprayed liner/box
1967 c10: frame-up rebuild with crate 350, too much to write
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