quietest gears for Ford 9"

[gnx7]

I'm buying a used built HD Currie 9" for my Chevelle project and it has 3.90 gears. I want to swap in 3.25 gears for my turbo project.

What manufacturer makes quiet gears? I don't want any whine.

[69x22]

Good luck with that one, it's a hit and miss with aftermarket gears.

[badmatt]

........... seriously how much more quiet do you need LOL.

if you want quiet get them REM finished and run good fluid.

[gnx7]

I've had a number of 8.8" rear ends built and only use Ford Motorsport gears as they are quiet. Richmond gears in the 3:90 ratio whined like crazy. I asked my differential guy about it and he said that is what particular brand in that ratio does. He has been working on transmissions and rear ends for 35 years.

So that being said.... what gears are you guys running in your 9" that don't whine. There are a dozen manufacturers and I don't want to make that mistake.

[GregWeld]

Originally Posted by gnx7

I've had a number of 8.8" rear ends built and only use Ford Motorsport gears as they are quiet. Richmond gears in the 3:90 ratio whined like crazy. I asked my differential guy about it and he said that is what particular brand in that ratio does. He has been working on transmissions and rear ends for 35 years.

So that being said.... what gears are you guys running in your 9" that don't whine. There are a dozen manufacturers and I don't want to make that mistake.

Call Randy's Ring and Pinion.... (google 'em) and they'll know more about this than the average guy on the street (which is what you're asking here). Or call and ask Currie -- or Strange.... They all have lots and lots of experience.

[badmatt]

the surface finish has a lot to do with this hypoid gears rub faces the smoother you get the finish the less noise you will have.