Rear end hum again.

[Supercharged111]

There's always the option of finding a six lug 9.5" from a C2500 and converting to the five lug 454SS axle shafts. I know the 454SS shafts will drop right in to a 2WD six lug 9.5" 14 bolt, I compared part numbers and dimensions researching this a long time ago. Never did figure out the details on the brake part interchange though.

So brake shoes/hardware is the same? On the other hand, Kenny could just go 6 lug too. C'mon Ken upgrade time!

 

[PlayingWithTBI]

Kenny could just go 6 lug too. C'mon Ken upgrade time!

But then he'd have to polish a new pair of rims!

 

[kennythewelder]

So brake shoes/hardware is the same? On the other hand, Kenny could just go 6 lug too. C'mon Ken upgrade time!

Oh, if I have to work on it, its getting a truetrac. Maybe 410s or 411s IDK.

 

[Supercharged111]

Oh, if I have to work on it, its getting a truetrac. Maybe 410s or 411s IDK.

Then you can get a Blackbear tune to correct the speedo and make more bald eagles!

 

[df2x4]

So brake shoes/hardware is the same?

That's the part I'm not sure about. I've seen some conflicting info about the flanges on the ends of the tubes. I quit researching it because I thought I had a lead on a complete 454SS axle but it fell through. I need to start looking into that again one of these days.

Moser and Strange are now making bolt-in Ford 9" housings for these trucks too, big $$$ though. Just food for thought.

 

[kennythewelder]

I was talking to the guys at the car show yesterday. They all kind of said 373s, but how much difference would I see between 373s from 342s. Also what RPM range does 410-411 turn a 70 MPH with 275-60-15s? and what top end will I get out if 411s. With 342s I have been up to around 140 at 5200 RPMs best I can tell. Will 411s do 130 at 5500 RPMs. Or in that range, and what about 373s. Keep in mind that my truck all ready runs a little better than a new 5.3L. never lost a race to one yet, thats a stock 5.3 or even with exhaust up grades. My truck runs 15 second quarter mile times now.

 

[Supercharged111]

A 3.42 isn't a bad gear with little 2wd tires. I had them in my 2wd then went 3.73 later as I'd hurt the gears. Wasn't that big of a difference, but if you're in there already for it it won't add to the cost or complexity.

 

[kennythewelder]

A 3.42 isn't a bad gear with little 2wd tires. I had them in my 2wd then went 3.73 later as I'd hurt the gears. Wasn't that big of a difference, but if you're in there already for it it won't add to the cost or complexity.

Thanks, thats why I kind of leaning toward 411/410. Im afraid the 373s just wont make that big of a difference. I like the 342s but IDK what shape they are in. If the pinion is scared, then I know it needs replacing. Being my dailey, I dont think I want ti take that chance. Also at 253,000+ miles, how much ware does it have. Also, is there that much difference in brand of gears. Prices range $100 or so. Why?. Cheap Chinese crap, or what?

 

[kennythewelder]

Here is a video of the noise.

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[df2x4]

I was talking to the guys at the car show yesterday. They all kind of said 373s, but how much difference would I see between 373s from 342s. Also what RPM range does 410-411 turn a 70 MPH with 275-60-15s? and what top end will I get out if 411s. With 342s I have been up to around 140 at 5200 RPMs best I can tell. Will 411s do 130 at 5500 RPMs. Or in that range, and what about 373s

This calculator should answer all those questions for you, Kenny.

http://chevellestuff.net/tools/rpm_calculator.htm