Diagnosing Knock LS1 (Video inside)
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 2,014
Likes: 48
From: Dayton Ohio
Diagnosing Knock LS1 (Video inside)
Well I randomly got a tick/knocking sound in my LS1 this weekend. This is actually on my GTO not the vette but same engine.
PRC 5.3 heads, comp cam, dual springs, Fast intake, etc. Motor has stock lifters and rockers with 126k and they have done the job thus far but I feel one may be the culprit.
Symptoms:
-Random knock low rpms seems to smooth out in upper rpms ( hope it rules out a bearing) Appears to be on passenger side in valvetrain area
-Runs great does not appear to be missing, not smoking, acting funny in any aspect.
-Header bolts are tight.
-Pulled valve cover and the springs and rockers appeared to be good.
-Changed oil and it was particle free no metal flakes, shavings, etc.
Clip here:
Thanks in advance!
PRC 5.3 heads, comp cam, dual springs, Fast intake, etc. Motor has stock lifters and rockers with 126k and they have done the job thus far but I feel one may be the culprit.
Symptoms:
-Random knock low rpms seems to smooth out in upper rpms ( hope it rules out a bearing) Appears to be on passenger side in valvetrain area
-Runs great does not appear to be missing, not smoking, acting funny in any aspect.
-Header bolts are tight.
-Pulled valve cover and the springs and rockers appeared to be good.
-Changed oil and it was particle free no metal flakes, shavings, etc.
Clip here:
Thanks in advance!
Last edited by PEETYZ; May 12, 2014 at 10:49 AM.
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 2,014
Likes: 48
From: Dayton Ohio
Thread Starter
Melting Slicks
Joined: May 2007
Posts: 2,014
Likes: 48
From: Dayton Ohio
