5-Speed Clank! Fixed, Whine Reduced
#1
5-Speed Clank! Fixed, Whine Reduced
Just picked up this 03 RCSCB 4.8/5-Speed from a member here. Great truck! Of course with 135k on the clock it needs some mechanical TLC to be perfect.
I've read about the NV3500 just being a truckish transmission and anytime this truck was clutched in normal accelerating or decelerating it would make an annoying CLANK! metallic noise. Many guys reported this at under 50k miles!
It would also make a Screech-Screech-Screech! sound under heavy acceleration. A shot of WD40 on the rear u-joint reduced the screech so off the O-Reilly for a u-joint.
New greaseable U-Joint = Screech gone and the entire drive train feels tight and connected much more like an LS1 car.
Also, since I yanked the drive shaft without raising the rear enough I was greeted with about a quart of Syncromesh on the garage floor. Went ahead and changed out the fluid with new Pennzoil Syncromesh and noticed a bit less whine.
I've owned C5s and a GTO with MN6 and all felt connected. I had been so bummed about how this thing shifted and the difference is amazing.
Old U-Joint, Roller Bearings? What Roller Bearings?
I've read about the NV3500 just being a truckish transmission and anytime this truck was clutched in normal accelerating or decelerating it would make an annoying CLANK! metallic noise. Many guys reported this at under 50k miles!
It would also make a Screech-Screech-Screech! sound under heavy acceleration. A shot of WD40 on the rear u-joint reduced the screech so off the O-Reilly for a u-joint.
New greaseable U-Joint = Screech gone and the entire drive train feels tight and connected much more like an LS1 car.
Also, since I yanked the drive shaft without raising the rear enough I was greeted with about a quart of Syncromesh on the garage floor. Went ahead and changed out the fluid with new Pennzoil Syncromesh and noticed a bit less whine.
I've owned C5s and a GTO with MN6 and all felt connected. I had been so bummed about how this thing shifted and the difference is amazing.
Old U-Joint, Roller Bearings? What Roller Bearings?
#4
LOL - no kidding
I'm a FL boy whose been in TX for 18 yrs, never seen anything like that. This truck came from 100 W of Kansas City, must have been snowy from 2003-2010.
Truck has ZERO body corrosion and just a little frame surface rust here and there...but little things like this I am taking care of one by one. All new to me.
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#8
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my nv3500 sucks whines makes all sorts of noise probably be its rated for 300ft tq and im putting down close to 600 so yeah swap the nv3500 do a auto swap or a t56 swap make it s 6sp
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