quietest gears for Ford 9" - Lateral-g Forums

gnx7 · #1 08-20-2012, 01:41 AM

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 · #2 08-20-2012, 02:49 PM

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

badmatt · #3 08-20-2012, 04:46 PM

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

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

gnx7 · #4 08-20-2012, 04:56 PM

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** · #5 08-20-2012, 06:56 PM

Quote:

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 · #6 08-20-2012, 07:58 PM

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.

INTMD8 · #7 08-20-2012, 08:47 PM

I had the same concern. After doing some research I ended up buying some used oem Ford gears on ebay. (couldn't find NOS)

Still a risk but they looked perfect.

chicane · #8 08-22-2012, 10:25 PM

Quietest gears for a Ford9" ?

Visteon... hands down.

gnx7 · #9 09-01-2012, 01:00 PM

Thanks.

My center section is with a local rock crawler guy to get new gears installed now. I told him I want quiet qears and he is providing options next week.

LS1-IROC · #10 09-05-2012, 05:57 AM

Ford OEM are your best bet. You can usually find them on ebay or craigslist. I set-up a set of Motive's in my last center section and they are pretty quiet, but not quiet enough for me. I also hear Yukon makes good quiet gears as well.