L99 Lifter TSB Questions, Any GM techs in here? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

JS · 11-24-2010, 05:33 PM

Is it better, is it more suited for rpm, is it able to withstand some of the newer AFM cams from Mast, Texas Speed and Comp. Mine are making the tick and I can have them replaced under warranty but if they'll be just as weak as the older L99 lifters then I will opt out and go right to a LS7 lifter.

Any GM techs in here to discuss these NEW L99 LIFTERS?

CC Performance · 11-27-2010, 03:21 PM

a stock lifter is a stock lifter is a stock lifter.. its the material used in the construction (and of course design that makes a lifter hi performance)
LS7 lifters are no different, they wont solve anything long term if your having an issue now. A properly setup valve-train with correct PR length and spring install heights will cure most ailments but if you want a true hi performance lifter you switch to a Morel link bar( if they have an option for your application).

JS · 11-28-2010, 09:47 PM

Morals and adj valvetrain have nothing to do with a DOD lifter that is ticking, its a known problem and a TSB now...IN 08 GM USED A BETTER DOD LIFTER IN THE G8 AND THOSE GUYS COULD RUN CAMS WITHOUT ISSUES, THESE NEW LIFTERS ARE HAVING ISSUES...HENCE THE QUESTION....

Ohten · 11-28-2010, 10:04 PM

I purchased my Camaro 2/28/10 and had a lifter tick at 950 miles,they were replaced 2 weeks ago(5,551 miles) with the newly designed lifter.I have not had a tick since the replacement.

Stex · 11-29-2010, 07:26 AM

There are redesigned lifters out now. See post 6 for TSB (Camaro is probably included by engine, 2011s should be ok??:

http://www.gm-trucks.com/forums/inde...owtopic=104679

Also reports of oil burners but not to many in the 6.2/6.0

11-24-2010, 05:33 PM	#1
JS Drives: 2010 Camaro SS Join Date: May 2010 Location: Phila,Pa. Posts: 557	L99 Lifter TSB Questions, Any GM techs in here? Is it better, is it more suited for rpm, is it able to withstand some of the newer AFM cams from Mast, Texas Speed and Comp. Mine are making the tick and I can have them replaced under warranty but if they'll be just as weak as the older L99 lifters then I will opt out and go right to a LS7 lifter. Any GM techs in here to discuss these NEW L99 LIFTERS? __________________ SOLD 2010 Camaro 1SS/A6 12.59@111.31 Magnaflow Magnapack Axleback & Resonated X-Pipe/OBX LT Headers/Airaid Cold Air Kit/Injection Connection Tuned

11-28-2010, 09:47 PM	#3
JS Drives: 2010 Camaro SS Join Date: May 2010 Location: Phila,Pa. Posts: 557	Morals and adj valvetrain have nothing to do with a DOD lifter that is ticking, its a known problem and a TSB now...IN 08 GM USED A BETTER DOD LIFTER IN THE G8 AND THOSE GUYS COULD RUN CAMS WITHOUT ISSUES, THESE NEW LIFTERS ARE HAVING ISSUES...HENCE THE QUESTION.... __________________ SOLD 2010 Camaro 1SS/A6 12.59@111.31 Magnaflow Magnapack Axleback & Resonated X-Pipe/OBX LT Headers/Airaid Cold Air Kit/Injection Connection Tuned

11-28-2010, 10:04 PM	#4
Ohten Drives: Granite Crystal Challenger SRT Join Date: Jan 2010 Location: West Palm Beach,FL by way of Akron,OH Posts: 1,406 View My Garage	I purchased my Camaro 2/28/10 and had a lifter tick at 950 miles,they were replaced 2 weeks ago(5,551 miles) with the newly designed lifter.I have not had a tick since the replacement. __________________

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11-27-2010, 03:21 PM	#2
CC Performance Account Suspended Drives: 99 Camaro SS, 79 z28, 70 GTX Join Date: Oct 2009 Location: ST Helens, OR Posts: 1,759	a stock lifter is a stock lifter is a stock lifter.. its the material used in the construction (and of course design that makes a lifter hi performance) LS7 lifters are no different, they wont solve anything long term if your having an issue now. A properly setup valve-train with correct PR length and spring install heights will cure most ailments but if you want a true hi performance lifter you switch to a Morel link bar( if they have an option for your application).

11-29-2010, 07:26 AM	#5
Stex Drives: 67 goat, 69 goat ram air III Join Date: Mar 2009 Location: South texas Posts: 1,443	There are redesigned lifters out now. See post 6 for TSB (Camaro is probably included by engine, 2011s should be ok??: http://www.gm-trucks.com/forums/inde...owtopic=104679 Also reports of oil burners but not to many in the 6.2/6.0