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05-08-2020, 07:51 AM
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#1 |
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Registered User
Join Date: Jun 2016
Location: Knoxville, Illinois
Posts: 335
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LS3 CAM in 5.3
Anyone run an OEM LS3 cam in their 5.3? My buddy bought a crate ls3 swapped cams for a bigger one and said I could have the stocker for cheap, along with the stock ls3 exhaust manifolds. Do any of you guys run one?
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05-08-2020, 12:06 PM
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#2 |
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Post Whore
  
Join Date: May 2015
Location: Alabama
Posts: 14,670
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Re: LS3 CAM in 5.3
I'm sure the cam will work...with a tune...need a spring change as well
But I'd for sure grab those manifolds...hard to come by and not cheap either.. Theres a bunch written on the cam swap https://www.hotrod.com/articles/ls-cam-test-comparison/ https://ls1tech.com/forums/generatio...hats-take.html
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Mongo...aka Greg RIP Dad RIP Jesse 1981 C30 LQ9 NV4500..http://67-72chevytrucks.com/vboard/s...d.php?t=753598 Mongos AD- LS3 TR6060...http://67-72chevytrucks.com/vboard/s...34#post8522334 Columbus..the 1957 IH 4x4...http://67-72chevytrucks.com/vboard/s...63#post8082563 2023 Chevy Z71..daily driver Last edited by mongocanfly; 05-08-2020 at 12:13 PM. |
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05-08-2020, 01:28 PM
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#3 | |
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Registered User
Join Date: Jun 2016
Location: Knoxville, Illinois
Posts: 335
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Re: LS3 CAM in 5.3
Quote:
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05-08-2020, 10:06 PM
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#4 |
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Senior Member
Join Date: Aug 2004
Location: Centennial, CO
Posts: 2,988
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Re: LS3 CAM in 5.3
Also check out the Richard Holdener videos on YouTube. He does a dyno test of that combo
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ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ |
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05-15-2020, 08:33 PM
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#5 |
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Registered User
Join Date: Feb 2015
Location: Maryland
Posts: 246
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Re: LS3 CAM in 5.3
Interesting -
Last edited by halfstep; 05-16-2020 at 06:24 PM. Reason: moderator request |
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05-18-2020, 12:57 PM
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#6 |
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Registered User
Join Date: Apr 2004
Location: Boiling Springs, PA
Posts: 435
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Re: LS3 CAM in 5.3
I have a LS7 cam swapped into my 5.3 engine in a dd.
it kills the low end noticable amount, but gains a lot of RPM potential and HP up top. All in what you want I guess... reading those articles about the swap, they focus on the peak HP gains and don't really tell how loosing 70lb-ft down low at 2500rpm feels seat of the pants. It doesn't bother me enough to re-swap the cam LOL my summary is the engine will feel noticeable softer in the rpm range most driving takes place, but above 4k feels noticably stronger and will pull to nearly 6500 cleanly before falling off. the OEM 5.3 cam was done and nosed over at 5400-5500
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71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear |
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