2005 c6 base ls2
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Instructor
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2005 c6 base ls2
ok , need input on any known valve lifter problems with the LS2 engine , I have a mild tick, even when fully hot . some say normal for LS2's and also say injectors make noise also , do injectors make more noise when dirty or wore out, car only has 51,000 miles and not really driven crazy , well ,all the time
Le Mans Master
Joined: Dec 2004
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From: West coast CA
ok , need input on any known valve lifter problems with the LS2 engine , I have a mild tick, even when fully hot . some say normal for LS2's and also say injectors make noise also , do injectors make more noise when dirty or wore out, car only has 51,000 miles and not really driven crazy , well ,all the time
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piston slap goes away as the engine heat up,, this is a very mild tick , will pop the hood and listen a little closer to the engine .
but the info I kinda needed is , do LS2's have documented history of lifter / valve problems , a lot of posts say they are known to sound like a sewing machine , a 400 HP SINGER
but the info I kinda needed is , do LS2's have documented history of lifter / valve problems , a lot of posts say they are known to sound like a sewing machine , a 400 HP SINGER
Drifting
Joined: Mar 2018
Posts: 1,362
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From: DFW TX
piston slap goes away as the engine heat up,, this is a very mild tick , will pop the hood and listen a little closer to the engine .
but the info I kinda needed is , do LS2's have documented history of lifter / valve problems , a lot of posts say they are known to sound like a sewing machine , a 400 HP SINGER
but the info I kinda needed is , do LS2's have documented history of lifter / valve problems , a lot of posts say they are known to sound like a sewing machine , a 400 HP SINGER
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worn needle bearings @51,000 miles, I would loose my faith in GM in that case, i'm 71 yo all these years all GM cars up to and past 150,000 on some small blocks.. 69 Z28 for one / 64 GTO / built 327 /283 etc, 5.3 VORTEC SILVERADO all driven, and a 348 in a 59,, 396 SS Chevelle.. not babied,, not one internal problem on any of them ,, so hope the LS2 was not a bad choice,, but lots of post from LS2 people say they are noisy , Corvette / GTO/ Caddy all had the LS2
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Drifting
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From: Atlanta - - - - - Save the manuals
I have a 2005 LS2 @ 55K if I haven't driven it in a while sometimes I get a very light tick at first or even after I've been clowning around. Sometimes I notice it and sometimes I don't.
I guess the answer is subjective as to how loud the tick is. In my case I'm not going to worry about it. HTH
I guess the answer is subjective as to how loud the tick is. In my case I'm not going to worry about it. HTH
Last edited by Dutch08; Dec 24, 2019 at 03:23 PM.
Intermediate
Joined: Oct 2018
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From: Fort Pierce, Florida
Small exhaust leaks often sound like ticking.
Check your exhaust manifold bolts. Look for headless bolts in the front and rearmost bolt holes in the manifold. Both sides. From lots and lots of reading in multiple forums and articles on the interwebs it appears that this is extremely common on ALL LS engines. Trucks, vettes, 5.3, 6.0, ect.
I have a 05 C6 as well......with broken exhaust mani bolts and the same ticking. Will be addressing it this weekend as luck would have it.
Also; I wouldnt worry about the LS2. I believe most people in the know consider it a very reliable engine.
Check your exhaust manifold bolts. Look for headless bolts in the front and rearmost bolt holes in the manifold. Both sides. From lots and lots of reading in multiple forums and articles on the interwebs it appears that this is extremely common on ALL LS engines. Trucks, vettes, 5.3, 6.0, ect.
I have a 05 C6 as well......with broken exhaust mani bolts and the same ticking. Will be addressing it this weekend as luck would have it.
Also; I wouldnt worry about the LS2. I believe most people in the know consider it a very reliable engine.
Last edited by PrecisionVette; Jan 1, 2020 at 08:56 PM.
Intermediate
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From: Fort Pierce, Florida
As a matter of fact from what I understand its not all that uncommon on other makes and models with aluminum heads + cast iron manifolds. Not all obviously, but some.
Last edited by PrecisionVette; Jan 2, 2020 at 11:31 AM.
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i'll have to go take a look , thanks for the info , but if the heads are popping off, it will be a PITA to replace them / pull the manifolds and hope there is enough bolt left to grab onto to remove it