Picked up an 06 longblock, with 31K miles. Started cam swap and #3 camshaft bearing fell to oil pan, and cam journal is blackened. The entire engine is super clean, what oil is left looks to be in very good condition with no metal in it. What do I do now?
04 rcsb with a few additions.
No one has any insight?
04 rcsb with a few additions.
I had that issue. Took mine to a machine shop and got a full rebuild. Do any of the lobes on the old cam look worn?
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
None of the lobes are worn. Cam journal is blackened some. I'm tempted to throw a bearing back in it and pull the trigger.
04 rcsb with a few additions.
Isnt #3 going to be hard to get to?Originally Posted by kemble
DANIEL CAMMED SS 13.46 @ 98.17-- 8.58 @ 80.31
2003 Silverado SS / LQ9 6.0L / Wheatley 93 Octane Tune / 224/228 .581 .588 110lsa / Patriot Gold Dual Springs / Comp Hardened Push Rods / Circle D 3800 stall / Pacesetter LT's / 4:10 Gears / Transgo HD-2 Shift Kit / K & N Cold Air Intake / Corvette Servo / Aeroforce Interceptor / Autometer Narrorband(Wideband on the way) / Mobile 1 Synthetic / Single Chamber Flows with X Pipe / Cats Delete with Cutouts
I would have to change the front 3.
04 rcsb with a few additions.
If you are going to change one of them, change all of the them. The problem I see here is if it's spun once, it'll spin again. I'm not sure how this is fixed, unless there are slightly larger OD bearings you can buy to replace this one with and get the machine shop to enlarge the bore a little for it.
- Paul J.
2006 Silverado LT3 L33 Z71 - Mods: K&N Air Filter; Taylor Wires
2008 Azera Limited - Mods: (Yah, wife's car ... not happening)
(SOLD) 1994 Camaro Z28 - Mods: (Too many to mention)
(SOLD) 2004 Suburban 5.3L Z71 - Mods: Flex-a-Lite 292 Monster Fan
(SOLD) 2000 Silverado 5.3L Z71 - Mods: (NTIKO)
(SOLD) 1991 Suburban 350 2WD - Mods: (NTIKO)
Its crazy the amount of opinions. Some people are saying to replace the front 3 cam bearings and run it, some say its time for a complete tear down. Still there are proplr in between as well. I pulled the front 3 cam bearings out, the hole in block looks identical to holes 1 and 2. I also pulled some rod caps and all the rod bearings look great.
04 rcsb with a few additions.
I thought cam bearing failure was due to oil starvation. No oil and the bearimg seizes to the cam and spins in the block shaving off the press fit material
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
It almost looks like the bearing had a high spot in it, the part where the bearing is connected to be round. I can still read all the writing on the outside of the bearing.
04 rcsb with a few additions.
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