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Reasonable cost for gear install?

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Old 03-14-2017, 10:52 AM   #21
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I'm about to embark on replacing the carrier/spider gears in my 01 Silverado. Ring and pinion look good from what I can see, so I'm going to leave them. I'm hoping it's not going to be too bad.
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Old 03-14-2017, 12:41 PM   #22
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I had another shop recommended to me. I called them today. He said $325. That's a more reasonable rate.

I think they do a lot more rearends too. A ton of Jeeps, jacked up trucks, and the like.
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Old 03-14-2017, 12:42 PM   #23
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The more I think about this, the more I'm thinking some of you guys are getting hosed. A gear swap is about a 2-3 hour job, maybe 4 if you are doing new bearings and seals... The average shop rate is maybe $70-100 per hour... If you do the math I don't see how a gear swap can cost $500+
I agree. Which is why the $500 number hit me the wrong way. I would assume 800 with them supplying parts (gears, pinion, fluid, new girdle). But not 500 with me supplying everything.
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Old 03-15-2017, 09:17 AM   #24
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Quote:
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I'm about to embark on replacing the carrier/spider gears in my 01 Silverado. Ring and pinion look good from what I can see, so I'm going to leave them. I'm hoping it's not going to be too bad.
Inside gears in an open truck diff? Thats cake.
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Old 03-24-2017, 05:55 PM   #25
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Got the car back today...

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Old 03-24-2017, 07:03 PM   #26
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So how do you like it now that the 3.23's are out? Feel any better to you?
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Old 03-24-2017, 07:37 PM   #27
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It is better. Probaby 300-500 rpm better in traffic. I am locking up at 40mph, which takes a lot of bite out of the exhaust. And I get resonance around 50. But it's for a smaller window than before. So I think I get the exhaust off the DSL and a lot of that vibration would be toned down. It's not loud at 60 or 70 at all. 80 it starts getting loud again as it approaches 2800RPM... so if I do Borla XR1s or Magnaflow Ovals, I think it'd still be loud and aggressive, but much better when driving.

Still need to break in the gears before I go apeshit with it. But just driving back home from the shop - took about 30 mins in traffic. Wasn't bad at all. Definitely felt like it was getting into its powerband easier. I'll have to play with the tune and adjust the timing since now I'm loading the motor differently. I noticed a little bit of surge that wasn't there before.
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Old 03-24-2017, 11:20 PM   #28
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Quote:
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It is better. Probaby 300-500 rpm better in traffic. I am locking up at 40mph, which takes a lot of bite out of the exhaust. And I get resonance around 50. But it's for a smaller window than before. So I think I get the exhaust off the DSL and a lot of that vibration would be toned down. It's not loud at 60 or 70 at all. 80 it starts getting loud again as it approaches 2800RPM... so if I do Borla XR1s or Magnaflow Ovals, I think it'd still be loud and aggressive, but much better when driving.

Still need to break in the gears before I go apeshit with it. But just driving back home from the shop - took about 30 mins in traffic. Wasn't bad at all. Definitely felt like it was getting into its powerband easier. I'll have to play with the tune and adjust the timing since now I'm loading the motor differently. I noticed a little bit of surge that wasn't there before.
Trans Am sounds great and those 3.73s should feel much better cruising. I'm running a Borla muffler I'm about 99% sure its an XR1 series and I like it. I think it actually kinda milds out the sound seems to have a nice deeper tone. That video of mine on the Mustang Dyno that I posted on here makes it sound pretty tame in my opinion. I've thought about putting a Spintech Super Pro muffler as they seem to really make idles sound pretty good but I'd bet it would grow old pretty fast.
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Old 03-25-2017, 12:31 AM   #29
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I went and found your dyno. Very smooth sounding. I think I'm going to fit the biggest XR1s I can and let it eat.
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Old 03-25-2017, 03:31 PM   #30
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I will say this... the rearend is very quiet. The guy I used did a great job of setting the gears.

What I ended up installing:

Motive 3.73s
Motive Install kit with Timken Bearings
ARP Main Cap Stud Kit
TA Performance Aluminum Girdle
Ratech Solid Pinion Spacer
Royal Purple 85W140 Gear Oil
GM Limited Slip Additive

I'll see how long it holds up.

Last edited by JakeFusion; 03-26-2017 at 11:51 PM.
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Old 03-25-2017, 05:31 PM   #31
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Blue or Orange box Motives?
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Old 03-25-2017, 09:59 PM   #32
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Orange box.
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