Results 1 to 11 of 11
Thread: ls1-b4c
-
11-25-2008, 08:21 AM #1
- Join Date
- Nov 2008
- Location
- denver,colorado
- Posts
- 2
white- 2001 camaro b4c
ls1-b4c
car has 118,000 miles-when cold it has a knock in valve train,top end. seems to diminish as engine warms. i have heard of pushrod problems with this engine-is this agood place to start? this is my first ls1-got it cheap because of this problem & just looking for logical troubleshooting steps
-
11-25-2008, 08:57 AM #2
- Join Date
- Oct 2008
- Location
- texas
- Posts
- 74
white- 1993 gmc typhoon
oil flush?
-
11-27-2008, 12:56 PM #3
Is it real loud or just barely audible? From what I've read a lot of LS1's make some valve train noise. Mine has a little noise at startup too, but its not that noticeable.
-
11-27-2008, 02:48 PM #4
Changing out the pushrods is definitely a good place to start. Its common to bend pushrods at anything over about 6,000RPM in a stock LS1, they are designed to be weak to prevent floating a valve into a piston in the event of a misshift.
You can get a set of chrome moly pushrods for around $120 to replace the stock ones.
-
11-27-2008, 06:01 PM #5
- Join Date
- Oct 2007
- Location
- Beaver Dam KY
- Posts
- 7,745
79 T/A -91 Firebird- 1998 Trans Am -Oynx Black
Piston Slap IMO.
-
12-01-2008, 06:46 PM #6
-
12-04-2008, 10:35 AM #7
- Join Date
- Oct 2007
- Location
- NC
- Posts
- 635
SOM- 1998 T.A.
-
12-06-2008, 02:58 PM #8
-
12-09-2008, 07:20 AM #9
- Join Date
- Oct 2007
- Location
- NC
- Posts
- 635
SOM- 1998 T.A.
-
12-11-2008, 08:42 AM #10
- Join Date
- Sep 2008
- Location
- Kitimat Bc Canada
- Posts
- 26
piston slap isn't so harmless piston slap at higher rpm's causes agresive wear so you wear the engine out considerably faster than if yo just let it idle and warm up. Not so harmless is it anymore
-
12-18-2008, 08:28 AM #11
- Join Date
- Oct 2007
- Location
- NC
- Posts
- 635
SOM- 1998 T.A.
Hmmmmm..... Well my 186K piston slap 5.3 runs just like the day I bought it over 5 years ago.
And once it heats up the piston expands and fills the bore so no more slap. Mine slaps for about three seconds max.
There is NO hard evidence that PS in these motors is anything more than an annoyance.
There was a class action lawsuit considered against GM for this but no actual proof that motor life was comprimised.
Thread Information
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)
Bookmarks