I just swapped a 1975 BBP 7 1/4 into my 63 Val and now have a "fluttering" sound at speed. Is this likely an axle bearing or something deeper? The unit is a low mileage piece with zero leaks (2.76). I have installed a new u-joint in the driveline and the Ball & Trunion is tight and well lubed. Thanks for any input! - M

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. . . there was good sport at his making.

Bearings usually make a rumbling/grinding noise. "Flutter at speed" often indicates a problem with the ring and/or pinion gear's tooth surfaces...usually rust pits/roughness on tooth surfaces. Rather common on low-miles units that have sat for years. The lube all drains off the stationary teeth and rust sets in. Usually doesn't affect the actual serviceability of the rear axle, just makes an annoying noise. You may want to pull the cover and check the ring and pinion carefully.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

That's a better scenario than I had hoped! And Dan, thanks again for that hose clamp method of removing the parking brake cables. It worked flawlessly!

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. . . there was good sport at his making.

Que? Hose clamp?

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.

Hose clamp method for emergency brake cable removal: See here.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Thanks Dan

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'72 Duster 198 stock cam, 3:23's

93 D350 Cummins THD Maxfuel 35mpg parts to hit 400hp+ Suncoast Cat2 A518, converter DDP Stage III injectors 62/64 HX35, 3 piece manifold, 4" Diamond Eye, Gear Venders OD. Stage I street/tow PDD head on order.