1999 silverado cam swap
1999 silverado 84,000 miles ls6 cam and springs, flowmaster Exhaust and spectre Exhaust. the swap went well except for one of the lifters falling into the engine, but if i can do it anyone can, thank you LS1TRUCK.COM for all the help.
Piston Slap GM style 2005 Chevrolet Silverado 5.3 vortec
PLEASE READ THE FULL DESCRIPTION - more info has been added. This is my 2005 Silverado 5.3 B motor with 81K miles doing the GM slap. Yes... this is a gasoline motor. Cold start, has been sitting ~12 hours, went down into the mid-20's overnight, now about 30F. I move the camera around alot so you can hear exactly what is going on. Can you see the rear main seal leak from the passenger side?? This is my third GM truck and will likely be my last. Background: Purchased new, Mobil 1 every 5K since 1K. Started making some noise around 60K in 2009, noise would go away after about 30 seconds. It's getting progressively worse and now lasts for upwards of 2 minutes (as seen in the video). Blackstone Labs oil report shows elevated iron levels and pretty much confirms the slap issue. In the video I start the truck and immediately shift in to reverse (with the parking brake on) because the noise is alot more obvious under a little load. This truck has seen only light towing/hauling and has no hardware mods. I use a Predator tuner in the 87-octane mode with no timing/injection changes just to correct the lousy GM throttle response. Questions/comments welcomed.
*** UPDATE ***
So, after sweating over the engine noise for a couple years or so my transmission blew with 84,400 miles. Figures. A GM-rebuilt 4L60E has been installed and I'm going to try to make 150K on this thing.
*** MORE info
I started having the oil tests performed very early as I initially intended to keep this truck for a very long time. I would have the oil tested every second or third oil change. Here are the iron numbers, PPM, for all 7 tests that I have had done. The Universal Average for iron is 19:
MILES Iron (PPM)
Turbo Silverado LS1 Truck 1989 GMC Sierra 5.3 Swap GiffinsShop.com turbo on my 5.3 Swap. More info below.
General specs:2000 5.3 Vortec 130,xxx miles,2002 LS6 Cam and Springs,Custom made turbo kit,MasterPower T-70 turbo,Greddy Typse S Blow off Valve,HKS GTII 60mm Wastegate,Front Mount Intercooler,2 Walbro 190 LPH pumps,FAST Fuel rails,72lb Injectors,Aeromotive Fuel Pressure regulator,Stock PCM tuned with HP Tuners,Battery Relocated to Bed,2003 Impala 9C1 cooling fans,Nitrous Express "Wet Kit",CoolingMist Meth injection,Innovate Wideband O2,EGT and Boost Gauges, 4L80E with TransBrake,Gov-Loc Posi and Case w/3.08 gears,Girdled Diff Cover.
Vortec 5.3 piston slap
2002 Chevrolet Avalanche. Piston slap is evident upon cold start. Chevrolet claims NO reliability or longevity issues because of this.
1988 YJ 5.3L Vortec engine
Starting up my new 5.3L Vortec project. It's running an AEM intake, AA headers, custom 2.5" Exhaust merged into a single 3" pipe, and a Flowmaster 50 series muffler. It is currently running with two O2 sensor codes. I'm hoping that is why it is running a little rough and smoking.