AAM 4.10s
07-01-2016, 03:16 PM
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AAM 4.10s Anyone know where I can purchase AAM 4.10s for Series 3 GM 7.5" 10 Bolt? I am also looking for recommendations on bearings.
My Motive 3.90s have bit the bullet. I believe due to an incompetent mechanic. They whined from the start and the rear end pretty much ran dry due to a leak from the pinion seal. The while is rediculous now, probably due to very little oil and whatever else is going on in there. The gear and pinion were brand new along with a TA girdle and all new bearings. All were brand new and went to **** with very little driving in less than 2 months.
The Googly mainly shows AAM gears on EBay. Not a big fan of purchasing from EBay. I want to make sure I get new.
My Motive 3.90s have bit the bullet. I believe due to an incompetent mechanic. They whined from the start and the rear end pretty much ran dry due to a leak from the pinion seal. The while is rediculous now, probably due to very little oil and whatever else is going on in there. The gear and pinion were brand new along with a TA girdle and all new bearings. All were brand new and went to **** with very little driving in less than 2 months.
The Googly mainly shows AAM gears on EBay. Not a big fan of purchasing from EBay. I want to make sure I get new.
Last edited by -=Modified=-; 07-01-2016 at 03:25 PM.
07-01-2016, 09:02 PM
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GM75410 is what you want. You're 3.90s were likely orange box Motives and they are known to be noisy.
Here's your rebuild kit with no wheel bearings:
https://www.summitracing.com/parts/rat-308tk/overview/
Here's your kit with wheel bearing and axle seals:
https://www.summitracing.com/parts/rat-3001k/overview/
Here's your rebuild kit with no wheel bearings:
https://www.summitracing.com/parts/rat-308tk/overview/
Here's your kit with wheel bearing and axle seals:
https://www.summitracing.com/parts/rat-3001k/overview/
07-05-2016, 11:24 AM
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Yes thats a 3 series. If it has the X on the end of the part number its a 2 series thick cut gear.
• RG DIAMETER 7.50"
• 10 3/8" X 18 LH THREADED BOLTS
• PINION DIAMETER 1.438" 27 SPLINES
• CASES: 3.08 & NUMERICALLY LOWER
3.23 & NUMERICALLY HIGHER
8620 Material - Heat Treated
MOTIVE GEARŽ R&P
GM7.5-308 26026781 40-13 3.08
GM7.5-323 26046641 42-13 3.23
GM7.5-342 26026782 41-12 3.42
GM7.5-373 26036813 41-11 3.73
GM7.5-410 26014585 41-10 4.10
GM7.5-456 26014587 41-9 4.56
MOTIVE GEAR PERFORMANCEŽ R&P
MGP# OEM REF# TEETH RATIO
G875273 26043281 41-15 2.73
G875308 26026781 40-13 3.08
G875323 26046641 42-13 3.23
G875342 26026782 41-12 3.42
G875342X* 41-12 3.42
G875373 26036813 41-11 3.73
G875373X* 41-11 3.73
G875390 43-11 3.90
G875410 26014585 41-10 4.10
G875410X* 41-10 4.10
G875456 26014587 41-9 4.56
*FITS 3.08 & NUMERICALLY LOWER CASE
• RG DIAMETER 7.50"
• 10 3/8" X 18 LH THREADED BOLTS
• PINION DIAMETER 1.438" 27 SPLINES
• CASES: 3.08 & NUMERICALLY LOWER
3.23 & NUMERICALLY HIGHER
8620 Material - Heat Treated
MOTIVE GEARŽ R&P
GM7.5-308 26026781 40-13 3.08
GM7.5-323 26046641 42-13 3.23
GM7.5-342 26026782 41-12 3.42
GM7.5-373 26036813 41-11 3.73
GM7.5-410 26014585 41-10 4.10
GM7.5-456 26014587 41-9 4.56
MOTIVE GEAR PERFORMANCEŽ R&P
MGP# OEM REF# TEETH RATIO
G875273 26043281 41-15 2.73
G875308 26026781 40-13 3.08
G875323 26046641 42-13 3.23
G875342 26026782 41-12 3.42
G875342X* 41-12 3.42
G875373 26036813 41-11 3.73
G875373X* 41-11 3.73
G875390 43-11 3.90
G875410 26014585 41-10 4.10
G875410X* 41-10 4.10
G875456 26014587 41-9 4.56
*FITS 3.08 & NUMERICALLY LOWER CASE