4wd front end noise? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Brimow525 · 03-07-2005, 04:13 PM

70 K20, 4:10 gears. Dana 44 front end, np 205 transfer, th350 tranny rebuilt.

Replaced front end drive shaft u joints, all front end bearings except pinions and carriers, drive shaft u joints replaced (to the wheels)

Now I have no noise in 2wd, no noise when I lock the hubs, but I have noise when in 4wd high above 8-10 mph. I plow with the truck so thats why I know the speed. Is a kinda grumbling noise. I can't place it. Its only when in 4wd. I was thinking pinion bearings but I get no noise if hubs are locked but not in 4wd. Any thoughts?

03-07-2005, 04:13 PM	#1
Brimow525 Registered User Join Date: Feb 2004 Location: Wrenchin' or Working in De., take your pick Posts: 51	4wd front end noise? 70 K20, 4:10 gears. Dana 44 front end, np 205 transfer, th350 tranny rebuilt. Replaced front end drive shaft u joints, all front end bearings except pinions and carriers, drive shaft u joints replaced (to the wheels) Now I have no noise in 2wd, no noise when I lock the hubs, but I have noise when in 4wd high above 8-10 mph. I plow with the truck so thats why I know the speed. Is a kinda grumbling noise. I can't place it. Its only when in 4wd. I was thinking pinion bearings but I get no noise if hubs are locked but not in 4wd. Any thoughts? __________________ Cuttin' Grass and Kickin' A** , and We're Running Out of Grass to Cut!



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