why do cammed LS1s always tick?
Instructor
Joined: Jan 2006
Posts: 122
Likes: 0
From: Pearland Texas
Encouraging. But I haven't heard anyone doing a retrofit with these to quiet down their valvetrain. If you do this and it works please do a post so we can all benifit. And please pm me about it as well.
I also believe the only solution to this problem is a lifter swap and lastly, only if necessary, a stronger oil pump. It's got to be because of the aggressive cam profile and extra spring pressures that the stock lifters aren't getting "pumped up" enough.
How soon are you going to try the new lifters?
Bob
I also believe the only solution to this problem is a lifter swap and lastly, only if necessary, a stronger oil pump. It's got to be because of the aggressive cam profile and extra spring pressures that the stock lifters aren't getting "pumped up" enough.
How soon are you going to try the new lifters?
Bob
brian
Team Owner
Joined: May 2001
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From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Burning Brakes
Joined: Oct 2004
Posts: 931
Likes: 35
From: Rowlett, Texas
I have the Baby Of All Cams, as Sadaam would say (212/218, .530 lift) and Comp 915 baby springs.
It goes ticky-ticky like a little sewing machine, and I actually love the sound.
However........
I have one REALLY bIG sewing machine in there that ticks louder than the other 15. DRIVES ME CRAZY. Makes me think maybe I did something wrong, or something is coming loose. It's done it for 5k miles now with no change, and I have checked all the rockers, PR's, springs, so I guess it may not be serious.
But why would one valve ticky-ticky 6 times/second louder than the others? AAAARRRRRG.
DG
It goes ticky-ticky like a little sewing machine, and I actually love the sound.
However........
I have one REALLY bIG sewing machine in there that ticks louder than the other 15. DRIVES ME CRAZY. Makes me think maybe I did something wrong, or something is coming loose. It's done it for 5k miles now with no change, and I have checked all the rockers, PR's, springs, so I guess it may not be serious.
But why would one valve ticky-ticky 6 times/second louder than the others? AAAARRRRRG.
DG
Drifting
Joined: Oct 2004
Posts: 1,345
Likes: 3
From: Mesa Arizona
Can't believe this thread is still running!
I fixed my sewing machine. I replaced an ill fitting Stainless Works header.
As it turned out the pass. side header was made incorrectly. The collector was too far towards the passenger side of the car causing the foward O2 sensor to rest on the pass. side floorboard frame. Since threre was total metal contact from the engine, through the header to metal frame of the floor, the valetrain noises were being transfered down through and into the car. Go figure.
I can still hear the lifters. It's not as quiet as stock but it's barely even noticable now.
I fixed my sewing machine. I replaced an ill fitting Stainless Works header.
As it turned out the pass. side header was made incorrectly. The collector was too far towards the passenger side of the car causing the foward O2 sensor to rest on the pass. side floorboard frame. Since threre was total metal contact from the engine, through the header to metal frame of the floor, the valetrain noises were being transfered down through and into the car. Go figure.
I can still hear the lifters. It's not as quiet as stock but it's barely even noticable now.
Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
when I had my H/C installed it sounded like a dang sewing machine and I really hated it! I changed out the stock length and went to 7.425" along with LS7 lifters and now sounds like stock! Well, at least the valve train does. The exhaust and rumble sound with the new H/C is just how I like it!
Last edited by DJMRTS; Mar 24, 2007 at 01:04 PM.
Instructor
Joined: Nov 2006
Posts: 152
Likes: 0
From: Baton Rouge la
I had a head and cam package installed with all of the new guts as well, dual springs, rockers, pushrods, valves, dual chain timing. My builder warned me that the drivetrain would produce more noise but that it was still bullet proof, just alot stiffer moving parts to produce more power.
I have about 5k miles on the install and either my hearing is going or the noise just dosent seem as loud
I have about 5k miles on the install and either my hearing is going or the noise just dosent seem as loud
Drifting
Joined: Oct 2004
Posts: 1,345
Likes: 3
From: Mesa Arizona
when I had my H/C installed it sounded like a dang sewing machine and I really hated it! I changed out the stock length and went to .725" along with LS7 lifters and now sounds like stock! Well, at least the valve train does. The exhaust and rumble sound with the new H/C is just how I like it!
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Thread Starter
Melting Slicks
Joined: May 2005
Posts: 3,394
Likes: 12
From: Leon Iowa
St. Jude Donor '06-'07-'08-'09
I am hearing tht all these ticks are normal because of the ramp rates but I just don't understand what is exactly making the noise. And yes it did sound louder after I put the headers on but it was still kinda loud even with the manifolds. As said above, could it be that the stock lifters can't hold the spring pressure of the stiffer springs??
Pro
Joined: Jan 2003
Posts: 503
Likes: 37
From: Warner Robins Georgia
I have it bad as well and what bothers me is how it comes and goes. It has to be oil pressure related because it's the quietest after an oil change.
I changed my lifters and put in a set of Mellings. It was quiet at first but the noise gradually came back.
I changed my lifters and put in a set of Mellings. It was quiet at first but the noise gradually came back.
Race Director
Joined: Sep 2005
Posts: 11,060
Likes: 291
From: Pasco WA
After I did my H/C, I used the stock lifters, and there was no noticable difference in "ticking" sounds. Now I put in the Caddie racing lifters,along with the roller rocker arms, and it's no different. This is with 7.7" pushrods.
Thread Starter
Melting Slicks
Joined: May 2005
Posts: 3,394
Likes: 12
From: Leon Iowa
St. Jude Donor '06-'07-'08-'09
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
Intermediate
Joined: Jun 2006
Posts: 35
Likes: 3
From: Atlanta Georgia
Team Owner
Joined: Apr 2001
Posts: 26,794
Likes: 614
From: Elmhurst, IL (West Suburb of Chicago) & Home of MEGA Horsepower
St. Jude Donor '06
G5X4 cam (24x/24x XE-R lobes on a 111 lsa), PRC dual springs, 7.425" pushrods.
Stock heads, lifters, rockers, etc. (for a limited time).
Engine is very quiet, no ticking. Inside the car with radio off, if you focus really hard, you can detect a faint "sewing machine" sound...but it certainly isn't obvious or noticible.
I was actually surprised at how quiet it was when I first drove it after the cam swap.
Of course I can never be content, so the car is in the process of being torn down again to flycut the pistons, and put on some stage 2 TEA 5.3 heads, GMPP "caddy" lifters, ARP studs, .040" Cometics, and probably some adjustable roller rockers.
Stock heads, lifters, rockers, etc. (for a limited time
).Engine is very quiet, no ticking. Inside the car with radio off, if you focus really hard, you can detect a faint "sewing machine" sound...but it certainly isn't obvious or noticible.
I was actually surprised at how quiet it was when I first drove it after the cam swap.
Of course I can never be content, so the car is in the process of being torn down again to flycut the pistons, and put on some stage 2 TEA 5.3 heads, GMPP "caddy" lifters, ARP studs, .040" Cometics, and probably some adjustable roller rockers.
YOU GO TOM,
You know have the GO FAST MODS to match the KILLER cosmetic looks on your beatiful C5!
Sorry to stray off topic for a second guys!
Burning Brakes
Joined: Mar 2003
Posts: 874
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From: Bonita CA