2 or 3 serious carrier?
07-25-2014, 12:41 AM
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Car: 1991 Camaro RS
Engine: Built TBI 350
Transmission: T-5
Axle/Gears: 3.42 Posi
2 or 3 serious carrier?
I'm new to rear ends. I'm wondering if I need a 2 or 3 series carrier? I have 91 camaro rs with the stock 3.08 gears .
07-25-2014, 12:48 AM
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Car: 89' IROC-Z
Engine: LO3
Transmission: 700R4
Axle/Gears: 10-Bolt/2.73
Re: 2 or 3 serious carrier?
Series 2 for stock gears 2.73-3.08.
Series 3 for stock gears 3.23-3.42.
Series 3 can fit a series 2 with a spacer. IIRC 1/4".
Series 3 for stock gears 3.23-3.42.
Series 3 can fit a series 2 with a spacer. IIRC 1/4".
07-25-2014, 01:11 AM
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Car: 1991 Camaro RS
Engine: Built TBI 350
Transmission: T-5
Axle/Gears: 3.42 Posi
07-25-2014, 07:12 AM
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Re: 2 or 3 serious carrier?
Yes, it will fit. The '91 also has 28 spline axles. This is where you have to be careful. The '89 and earlier 7 5/8 and 7 1/2 inch rear ends had 26 spline axles and the '90 and later had 28 spline axles.
The 2 series is for 2.14 to 3.08 gears and the 3 series is for 3.23 to 4.56 gears. There are special thick 3.23 to 4.10 after market gears that are made to fit the 2 series differental, but this does not apply to GM gears.
The 2 series is for 2.14 to 3.08 gears and the 3 series is for 3.23 to 4.56 gears. There are special thick 3.23 to 4.10 after market gears that are made to fit the 2 series differental, but this does not apply to GM gears.
08-19-2014, 07:00 PM
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Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: 2 or 3 serious carrier?
So if your going from 2.73 to 3.73, you need a spacer? can that spacer also be purchased on summit?
08-19-2014, 08:23 PM
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Re: 2 or 3 serious carrier?
DO NOT use a spacer. They are nothing but trouble, especially in the 7.5 rear end. There are special gears for the 7.5 that are made thicker for use on the 2 series differential.
08-19-2014, 08:52 PM
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Car: 87' Firebird Formula
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Re: 2 or 3 serious carrier?
thanks big gear head. that idea is out now. dont need ANY trouble back there. summit gave me the option to choose 3.73 for a series 2 carrier so that should take care of everything. here's the link in case others in my shoes need it:
http://www.summitracing.com/parts/sum-741012
http://www.summitracing.com/parts/sum-741012
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08-22-2014, 09:46 PM
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Car: 1991 Camaro RS
Engine: Built TBI 350
Transmission: T-5
Axle/Gears: 3.42 Posi
Re: 2 or 3 serious carrier?
09-01-2014, 09:14 PM
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Car: 89iroc/03dakota
Engine: 350&4.7
Transmission: auto
Axle/Gears: 2:77 & 3:55
Re: 2 or 3 serious carrier?
I have 9 bolt with 2:77s You said summit had 3series for 2series
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