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Premium Member
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Discussion Starter #1 (Edited)
Hi All
Need some advice, had a very well known shop here in So Call swap by rear end gears out to 4.10's.
He told me he had a tough time getting them aligned and that there was some gear noise but that was normal and might lessen after a few hundred miles and not to worry as they were warranted for a year.

Well it has been about two weeks the gears are quite moving forward but on deceleration they howl like a barrel of monkeys.

My 05 has 40,000 miles on the clock and was whisper quite with the stock 373's.

I have every service record for this truck , never had any work done on the rear end till now.

So my question is do I take it back, demand they fix it, do I ask for my money back and take it somewhere else or just live with the howl ?
Like the change in performance but not the noise.
 

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Premium Member
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6,154 Posts
Hi All
Need some advice, had a very well known shop here in So Call swap by rear end gears out to 4.10's.
He told me he had a tough time getting them aligned and that there was some gear noise but that was normal and might lessen after a few hundred miles and not to worry as they were warranted for a year.

Well it has been about two weeks the gears are quite moving forward but on deceleration they howl like a barrel of monkeys.

My 05 has 40,000 miles on the clock and was whisper quite with the stock 373's.

I have every service record for this truck , never had any work done on the rear end till now.

So my question is do I take it back, demand they fix it, do I ask for my money back and take it somewhere else or just live with the how ?
Like the change in performance but not the noise.
sounds like they don't have the backlash dailed in right. That used to be a simple swap, at least it was on my 63 Chevy with 4:56 gears. Maybe a different shop opinion!!
 

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Premium Member
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334 Posts
Either they didn't check the pattern after setting them up or it has a bad pinion bearing. It needs to be redone before the new gearset is ruined. How much did it help performance? I bet a bunch!
 

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BAD BOW TIE
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11,212 Posts
If it is making that much noise it will probably come apart later and cost you a ton. Better to get it fixed right and pay now and avoid a major expense later. I would approach the place that did it and if that doesn't feel right about a do over I would go some where else and eat the bill now rather then later when it will cause more damage and possibly leave you stranded. My 2 cents and we all know what that is worth.
 

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It shouldn't make any noise if properly installed. Installers will blame the gears but that's not usually the case. Hope the installer comes to the party and takes care of you.
 

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Resident Rocket Scientist
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11,997 Posts
Go back and take them for a ride. They should be quiet from the get go. They won't improves with time. Getting the backlash and pinion depth correct is key to them running quiet. For street I like to set them up on the low end of things as long as I have a good pattern on both the drive and coast side and as well as centered between the heel and toe of the ring gear. I've yet to have a noisy set of gears (or failure).

Of course, you need to go easy on them at first so they will wear in nicely.
 

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A couple of years ago a good friend of mine said he knew how to set up gears and would help me install 410 gears. Mine also whined on deceleration. After just driving it 20 or 30 miles I decided to take it to a professional and have it done correctly. To make a long story short the gears were already ruined.
 

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9,359 Posts
I had my 4:10s on a 6 speed installed by the local Chevy dealership.

I was able to get American Axle 4:10s, same brand as the stock 3:73s. I don't know if that made any difference, but my gears have been very quiet from day one.
 

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Discussion Starter #10 (Edited)
Hi All
Thanks for the replies, Called the well known famous differential specialist and told him I was very unhappy and that the rear end was howling louder and louder and he said to bring her in next week.
I went with these Guys based on info here and on the web, these folks have been in several magazines and a few of their builds hold records so I'm hoping they can fix this issue, I'll keep you all posted as this progress and if you have any other ideas on what causes a howl during deceleration please let me know.
 

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Premium Member
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1,297 Posts
When I did my gear swap there was a lot of talk about after market gears that howled. It went back to matching the pinion to ring gear pitch.
I was able to order and install GM 4 11 gears. No wine and I now have about 80K on the gear change. Good luck on getting rid of the noise.
 

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Discussion Starter #12 (Edited)
SUCCESS !
Dropped the SSR off with the folks who did the gear change, went for a ride we both heard the gears howling.
John told me leave it and it would be ready this afternoon.
So about 4 hrs later I got a call from John, and he said come and get her she is quite as a mouse.
Got there after work, John said they had replaced the gears and a bearing , washers, etc. No Charge.
I love people that stand behind their work, Thank you J & S Gears in HB California.
Thanks to all on the forum for advise and support.
 

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Premium Member
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6,154 Posts
SUCESS !
Dropped the SSR off with the folks who did the gear change, when for a ride we both heard the gears howling.
John told me leave it and it would be ready this afternoon.
So about 4 hrs later I got a call from John, and he said come and get her she is quite as a mouse.
Got there after work, John said the had replaced the gears and a bearing , washers, etc. No Charge.
I love people that stand behind their work, Thank you J & S Gears in HB California.
At least you didn't have to get nasty and say "WHY ME" LOL.
 

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Supporting SSR Hobbyist
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10,127 Posts
SUCESS !
Dropped the SSR off with the folks who did the gear change, when for a ride we both heard the gears howling.
John told me leave it and it would be ready this afternoon.
So about 4 hrs later I got a call from John, and he said come and get her she is quite as a mouse.
Got there after work, John said the had replaced the gears and a bearing , washers, etc. No Charge.
I love people that stand behind their work, Thank you J & S Gears in HB California.
I love it when I see this kind of ownership on service. J&S has a good reputation and this is just one of the reasons why........

Congrats on finding the right shop.

Mike
 

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Resident Rocket Scientist
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11,997 Posts
SUCCESS !
Dropped the SSR off with the folks who did the gear change, went for a ride we both heard the gears howling.
John told me leave it and it would be ready this afternoon.
So about 4 hrs later I got a call from John, and he said come and get her she is quite as a mouse.
Got there after work, John said they had replaced the gears and a bearing , washers, etc. No Charge.
I love people that stand behind their work, Thank you J & S Gears in HB California.
Thanks to all on the forum for advise and support.
Good to hear they still stand behind their work. I've had them do work a few times and never had an issue.
 

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Premium Member
2005 Ricochet Silver
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1,004 Posts
Hey Carl. I can tell you here in Orlando I paid $1,100 for parts and labor in my 05 auto. The same place ( ADVANCE DRIVELINE) charged me $1,400 two years ago for the 6 speed.
LITEMUP, thanks for answering. Not in my budget to do right away, but I have been following the discussion regarding swapping from 3.73 to 4.10 gears and it is on my future to-do list!

Cheers, CB
 

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Premium Member
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3,407 Posts
Imj

If you have a 6 speed I highly recommend a swap. I looked all over and could not find 4.30's for that rear end. That would put it right in the wheel house for stock automatics.

My 4.56 swap was right at $1,000 with parts. I really cleans up the low gears on the 6 spd and helps with lower cruising speeds. Stock 6th gear seemed to hit a sweet spot at the 80 mph or just over. Now I can cruise on the 65 mph limit two ways and not be in 5th gear.

About 2100 mid at 75 mph with 315/35's on the rear.

IJS

Dave
 

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Premium Member
2003 Chevy SSR
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1,440 Posts
I had 4.56's put on Ilsa, then after a few years of street driving as well as autocross and drag fun, started getting noise. I had the guys who installed the gears take a look at them and they said that the gears did need adjusting, but after they adjusted them back to optimal, they made more noise than before - so I hope they're OK.

By the way, with the Corvette servo, the 1 - 2 shift is nice and fast, but the 2 - 3 shift was always agonizingly slow. When I mentioned this to the tranny guys who did my 4.56's, they opened up some ports more than OEM on the 2 - 3 shift and it is better than ever now.
 
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