08-21-2013, 12:17 PM | #1 |
Drives: 2010 twin turbo ss Join Date: Nov 2012
Location: Oklahoma City
Posts: 306
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changing camshafts in ls3. Does everyone upgrade the chain?
Is it necessary?
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08-21-2013, 12:23 PM | #2 |
Master ASE, GM, LSX Tech.
Drives: 2010 Camaro SS Join Date: Oct 2012
Location: Austin, TX
Posts: 1,034
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Iwis chain, cheap insurance.
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08-21-2013, 12:28 PM | #3 |
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Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011
Location: St. Charles, IL
Posts: 18,663
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+1 and like we mentioned before. On a car with twin turbos I'd really want that added protection. Adding a dual row chain and a high volume oil pump are a smart move on a big power car.
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08-21-2013, 12:32 PM | #4 |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Dbl roller chains are so SBC, a katech C5R chain will suffice, harmonics from cheap pullies are what breaks them more often than not.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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08-21-2013, 02:13 PM | #5 |
Drives: 2SS/RS - Black - GFX Join Date: Nov 2008
Location: B'ham, Alabama
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I didn't change my chain or oil pump and I have about 140,000 miles on mine (~70K miles on the cam).
... and I have yet to read of a chain failing on an LS3.... So I don't know why everyone is talking about cheap insurance. Changing the chain is a real pain if you aren't already taking the oil pump off. however I have read plenty of threads about oil pump failures... so you will need to make that call yourself.
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Ordered: 10-13-08
Built: 3-30-09 (#1691) Recieved: 6-12-09 Blacked out, Cammed (Lunati Voodoo 233/245, .578/.598 @114°, +4°), ARH LTs, VR OTR CAI, Cutouts, and lots of other fun mods. |
08-21-2013, 02:24 PM | #6 |
Drives: 2011 Camaro 2SS/RS Join Date: Oct 2011
Location: Texas RGV
Posts: 794
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I left my chain and oil pump alone. So far so good
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08-21-2013, 02:37 PM | #7 |
I'll be back...
Drives: Subaru, HD Road Glide Special Join Date: Apr 2012
Location: Omaha, NE
Posts: 3,036
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Chain failure on the LS engines could result in catastrophic engine damage. For $150 extra bucks and a little more labor, it's unwise to ignore this crucial component during a cam swap.
Think of it this way: you're using an aftermarket cam, aftermarket springs, etc. Why would you keep the chain stock? C5-r chain for the win.
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Bye bye, Bumblebee!
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08-21-2013, 02:55 PM | #8 |
Drives: 2010 2SS Join Date: Jan 2013
Location: Corpus Christi TX
Posts: 634
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Never seen any ls3 chain break
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08-21-2013, 08:39 PM | #9 |
Drives: 2010 Camaro SS/RS LS3 Join Date: Apr 2013
Location: Bloomfield Hills, Michigan
Posts: 1,088
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My cam installer / tuner has been in the business since 1990, he did not suggest changing the chain or oil pump. He indicated the GM OEM parts are of equal quality and many times better than aftermarket.
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08-21-2013, 08:46 PM | #10 |
Drives: 2010 Camaro SS Join Date: Jul 2012
Location: Tampa Fl
Posts: 149
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I will be changing my oil pump and timing chain when I do heads and cam and adding the LS2 dampner as well. The chain doesn't have to break you can have timing issues just from chain stretch.
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2010 Camaro SS
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08-21-2013, 08:49 PM | #11 |
Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,019
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I too have read were to replace the chain to keep the factory chain from breaking but have not read or seen were one has broken. Pumps and tensioners I have read were they have failed but not the chain.
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Retired wanna be cylinder head porter
2015 2SS 1LE Clutch reservoir, Vararam DRX, ported TB, TSP 2" headers, MGW shifter Totalled: 2010 1SS Wilkes Performance/Eagle 416 shortblock, TSP custom valvetrain, PRC 260 heads, Edelbrock Pro Flo 102, th400 swap, 8" PTC 5500 stall= 535/435 at the wheels tuned Gen 3 Performance and Dyno 10.97 @ 124 full weight in 3100 DA CamaroFest X |
08-21-2013, 09:22 PM | #12 | |
V8 Lounge member #2
Drives: 2001 Ws6 Join Date: Sep 2009
Location: Burbank,IL
Posts: 6,373
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Quote:
Google is your friend. Then come back and report your findings. Don't just believe what people say and repeat it without you knowing exactly what you talking about bud.
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2001 ws6, 40k miles, Ls3 416 stroker, short block built by PER the rest by me. LPE Ls3 heads milled to 12-1 comp, FAST 102, NW 102, kooks 2", dual DMH cutouts, Magnaflow C/B, BTR cam + springs. Full UMI suspension.
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08-21-2013, 09:25 PM | #13 |
Drives: 2016 Camaro SS Join Date: Jan 2009
Location: Rochester, NY
Posts: 529
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Never seen a timing chain on the newer (08+) LS engines break on anything coming through our shop. The older LS engines had poor quality timing chains, but the newer ones are good to go unless you are building an all out racing engine. Same goes for the oil pumps, if anything, just port the pump and shim the spring and its pretty stout after that.
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08-21-2013, 09:26 PM | #14 |
Drives: 2010 camaro 2ss Join Date: May 2013
Location: Tx
Posts: 86
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Stock oil pump, & chain here too and rockers too. No up graded trunions
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