Rocker please help...... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

rmonzo01 · 07-12-2019, 09:01 PM

So my car had a louder then normal tick/knock under drivers valve cover. Instantly thought collapsed lifter or lifter failure. Pulled valve cover and first rocker on drivers side has slop to it all rest tight. Pulled rockers and push rods all looked good. Pulled head for lifters and all lifters valve springs looked good. What could be the cause of a sloppy rocker?

sixty9fordkiller · 07-12-2019, 09:45 PM

flat cam lobe

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rmonzo01 · 07-15-2019, 02:45 PM

Cam lopes all look good.

sixty9fordkiller · 07-15-2019, 03:59 PM

not trying to be smart, but "looks" and measured are two different things. if the cam lobe is flattened by .1" of and inch, id imagine the stock 7.4" pushrods are gonna be too short.

i have not had a flat cam lobe in a genIII and up chevy motor, but i have had a couple in some genII sbc with hyd roller cams

both times i wasnt able to tell by simply removing the valve covers, intake manifold, and lifters. it wasnt till i pulled out the cam and mic'd it that i found out i had a bad lobe

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rmonzo01 · 07-16-2019, 04:49 PM

Oh gotcha. I just seen pics and stuff on forums and usually you can tell visually.

LsxDoctor · 07-16-2019, 05:12 PM

Did the needle bearings go everywhere? I've had quite a few fail on me before I upgraded. Don't stress too much it's an easy fix. I doubt your cam got messed up unless the lifter ate it. Rub your finger on the lobes and see how it feels. Usually it's the offset rockers that mess up. Make sure to get a pen magnet and collect as many bearings as you can. Change the oil.

07-12-2019, 09:01 PM	#1
rmonzo01 rmonzoSS Drives: 2011 camaro ss Join Date: Sep 2015 Location: United States Posts: 101	Rocker please help...... So my car had a louder then normal tick/knock under drivers valve cover. Instantly thought collapsed lifter or lifter failure. Pulled valve cover and first rocker on drivers side has slop to it all rest tight. Pulled rockers and push rods all looked good. Pulled head for lifters and all lifters valve springs looked good. What could be the cause of a sloppy rocker?

07-12-2019, 09:45 PM	#2
sixty9fordkiller Donkey Dick Cam Camaro Drives: 2010 2SS/RS LS3 M6 Join Date: Oct 2009 Location: Los Angeles, CA Posts: 2,000	flat cam lobe Sent from my SM-G975U using Tapatalk __________________ Bone Stock

07-15-2019, 03:59 PM	#4
sixty9fordkiller Donkey Dick Cam Camaro Drives: 2010 2SS/RS LS3 M6 Join Date: Oct 2009 Location: Los Angeles, CA Posts: 2,000	not trying to be smart, but "looks" and measured are two different things. if the cam lobe is flattened by .1" of and inch, id imagine the stock 7.4" pushrods are gonna be too short. i have not had a flat cam lobe in a genIII and up chevy motor, but i have had a couple in some genII sbc with hyd roller cams both times i wasnt able to tell by simply removing the valve covers, intake manifold, and lifters. it wasnt till i pulled out the cam and mic'd it that i found out i had a bad lobe Sent from my SM-G975U using Tapatalk __________________ Bone Stock

07-16-2019, 05:12 PM	#6
LsxDoctor 15 Year LS1Tech Member Drives: 2010 ss 391ci LS3 Join Date: Apr 2017 Location: Albuquerque Posts: 252	Did the needle bearings go everywhere? I've had quite a few fail on me before I upgraded. Don't stress too much it's an easy fix. I doubt your cam got messed up unless the lifter ate it. Rub your finger on the lobes and see how it feels. Usually it's the offset rockers that mess up. Make sure to get a pen magnet and collect as many bearings as you can. Change the oil. __________________ GJDM

07-15-2019, 02:45 PM	#3
rmonzo01 rmonzoSS Drives: 2011 camaro ss Join Date: Sep 2015 Location: United States Posts: 101	Cam lopes all look good.

07-16-2019, 04:49 PM	#5
rmonzo01 rmonzoSS Drives: 2011 camaro ss Join Date: Sep 2015 Location: United States Posts: 101	Oh gotcha. I just seen pics and stuff on forums and usually you can tell visually.