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#1 |
Registered User
Join Date: Mar 2013
Location: houma, louisiana
Posts: 25
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How can i tell if i have an LS motor
I purchased a wrecked 2011 chevy Tahoe with a 5.3 votex with 99k miles. No other info in the truck except 5.3 vortex. How can I find out if it is a LS motor?
Any help is greatly appreciated. Looking to put drive train in 69 GMC stepside. Also scored power leather bucket seats. |
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#2 |
Registered User
Join Date: Sep 2006
Location: Riverton KS
Posts: 832
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Re: How can i tell if i have an LS motor
Yes, it is a "LS" motor. And its Vortec with a "C" not an "X".
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1970 SWB Build |
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#3 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
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Re: How can i tell if i have an LS motor
Open the hood
![]() Sorry, couldn't resist. It's an '11 with a 5.3. '11s had LS engines and 5.3 is an LS displacement. Knowing that, there's really no need to open the hood after all. ![]() (sorry again)
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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#4 |
Account Suspended
Join Date: Jan 2007
Location: Tucson
Posts: 2,183
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Re: How can i tell if i have an LS motor
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#5 |
Registered User
Join Date: Dec 2007
Location: Southern CA
Posts: 210
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Re: How can i tell if i have an LS motor
And here is how to identify which one you have... http://www.hotrod.com/how-to/engine/...gm-v8-engines/
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71 C-20 Custom Camper California Truck |
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#6 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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Re: How can i tell if i have an LS motor
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#7 |
Senior Member
![]() Join Date: Mar 2004
Location: Lee's Summit, MO (KC)
Posts: 742
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Re: How can i tell if i have an LS motor
You should have the 6speed auto tranny as well. That's the combo I am going to end up using.
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-Keegan- '72 Jimmy 4x4 - 5.3/4L65E/NP205 swap http://67-72chevytrucks.com/vboard/s...d.php?t=663780 |
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#8 |
Registered User
Join Date: May 2011
Location: Oakley, Michigan
Posts: 735
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Re: How can i tell if i have an LS motor
And will probably have to replace the pistons if they haven't already been done. Those have the displacement on demand and up until sometime mid 2011 I believe, they have bad problems with the piston rings getting caked up and blowing oil by them. Unless you know for sure what has been done to it, I'd recommend opening it up and taking a look.
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#9 |
Hittin E-Z Street on Mud Tires
![]() Join Date: Nov 2004
Location: Greenville, SC
Posts: 23,090
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Re: How can i tell if i have an LS motor
The early DOD motors had several issues. They also had problems with lifters failing and ticking.
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Jesse James 1967 C10 SWB Stepside: 350/700R4/3.73 1965 Ford Mustang: 289/T5-5spd/3.25 Trac-Loc 1968 Pontiac Firebird: Project Fire Chicken! 2015 Silverado Double Cab 5.3L Z71 2001 Jeep Wrangler Sport 4.0L 5spd 2020 Chevrolet Equinox Premium 2.0L Turbo 2011 Mustang V6 ~ Wife's ride ![]() American Born, Country by the Grace of God ![]() 1967 CST Shop Truck Rebuild! My 1967 C-10 Build Thread My Vintage Air A/C Install Project "On a Dime" Trying my hand at Home Renovation! 1965 Mustang Modifications! |
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#10 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: How can i tell if i have an LS motor
I have a 2011 GMC daily driver, with 120,000 on it. The 5.3 has served me well and for the first 50,000 the DOD was active, then we tuned it out with a computer tune. This truck runs great and hard, uses little oil and there have been no lifter issues. I believe that if you run them a little harder than just grocery getting, then the pistons will stay clear and your issues will be minimal.
If there is a failure, the engine will come out and we will put in somethng larger.
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Frank |
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#11 | |
Registered User
![]() Join Date: May 2014
Location: PA
Posts: 1,417
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Re: How can i tell if i have an LS motor
Quote:
Last edited by EARNHARDT#3; 01-22-2015 at 06:33 PM. |
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#12 |
Registered User
Join Date: Feb 2011
Location: Modesto, CA
Posts: 2,188
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Re: How can i tell if i have an LS motor
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#13 |
Registered User
![]() Join Date: May 2014
Location: PA
Posts: 1,417
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Re: How can i tell if i have an LS motor
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