O type gears
October 13th, 2016, 08:59 AM
#3
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October 13th, 2016, 09:06 AM
#4
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Correct for what? Yes, they are correct for installation on a factory 3.08-3.23 carrier, but not correct for a factory 3.42 carrier.
Here's some O-Type info that Brian Trick posted many years ago. This shows there are essentially three series of carriers and gears are made specifically to fit a particular series.
O-Type 12 Bolt
Here is a list of the posi units & what gears they will fit:
#673 = 2.56 & 2.78 ratios, 28 spline
#671 = 3.08 & 3.23 ratios, 28 spline
#588 = 3.42 & anything numerically higher, 28 spline
#672 = 3.42 & anything numerically higher, 31 spline
***The 31 spline axles were offered in late 67-68 OAI cars only.
Here's some O-Type info that Brian Trick posted many years ago. This shows there are essentially three series of carriers and gears are made specifically to fit a particular series.
O-Type 12 Bolt
Here is a list of the posi units & what gears they will fit:
#673 = 2.56 & 2.78 ratios, 28 spline
#671 = 3.08 & 3.23 ratios, 28 spline
#588 = 3.42 & anything numerically higher, 28 spline
#672 = 3.42 & anything numerically higher, 31 spline
***The 31 spline axles were offered in late 67-68 OAI cars only.
Last edited by Fun71; October 13th, 2016 at 09:09 AM.
October 13th, 2016, 12:00 PM
#6
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Location: Delta BC Canada
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3.42s
Read the above posts again.
Your 673 carrier will not work with factory 3.42s or with the Richmond gears either.
October 13th, 2016, 12:08 PM
#7
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Location: Dover, Ohio
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I believe those summit gears will only work with a 671 carrier? Not totally sure but Brian or Monzaz will tell you for certain.
October 13th, 2016, 12:10 PM
#8
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heres your summit gear description;
Richmond Gear 49-0049-1 - Richmond Gear Ring and Pinion Sets
Click here for more information about Richmond Gear 49-0049-1 - Richmond Gear Ring and Pinion Sets
$30.00 Summit Bucks
Free Shipping
Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.5 in., O Axle, 10-Bolt, 3 Series, Set
says right there in last line -- 3 series --- that specifically means a 588 or 672 carrier!
Richmond Gear 49-0049-1 - Richmond Gear Ring and Pinion Sets
Click here for more information about Richmond Gear 49-0049-1 - Richmond Gear Ring and Pinion Sets
$30.00 Summit Bucks
Free Shipping
Gear, Ring and Pinion, 3.42:1 Ratio, GM, 8.5 in., O Axle, 10-Bolt, 3 Series, Set
says right there in last line -- 3 series --- that specifically means a 588 or 672 carrier!
October 13th, 2016, 12:20 PM
#10
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Location: Phoenix, AZ
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I think that is incorrect. The Richmond gears are made to fit the 671 carrier. I have no idea what "3 series" means for the O-Type as there are 3.xx gears for both the 671 and 588/672 carriers.
October 13th, 2016, 12:22 PM
#11
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https://classicoldsmobile.com/forums...ar-spacer.html
https://classicoldsmobile.com/forums...swap-help.html
October 13th, 2016, 01:35 PM
#15
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Location: Phoenix, AZ
Posts: 14,737
Well, if we call the 673 carrier (for 2.56-278 gears) the "2 series" then the next logical step is the 3.08-3.23 are the "3 series" which leaves the 3.42/3.91/4.33/4.66 as the "4 series".
So much easier to just say which factory gear range it covers and leave the ambiguous "series" nomenclature out of the conversation.
So much easier to just say which factory gear range it covers and leave the ambiguous "series" nomenclature out of the conversation.
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