ever hear of a 2 series posi ? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

fnoblitt · 04-20-2002, 01:46 PM

i have a 69 c10 with a 12 bolt rear and 3.73 gears (no posi).i'd like to change the gears to a 2.76 ratio,but i'm told they won't fit on my carrier because it is for 3.73 and up ratios. my question is,will a 2.76 ratio fit on a 3 series carrier,or do i have to find a 2 series carrier? does anyone have a nice used carrier or posi unit that this ratio will fit?

*Fast68Chevy* · 04-20-2002, 03:28 PM

2.73-3.40 are series 3

3.73-lower ratio/higher numerical are series 4

04-20-2002, 01:46 PM	#1
fnoblitt Registered User Join Date: Mar 2002 Location: southern calif.,usa Posts: 200	ever hear of a 2 series posi ? i have a 69 c10 with a 12 bolt rear and 3.73 gears (no posi).i'd like to change the gears to a 2.76 ratio,but i'm told they won't fit on my carrier because it is for 3.73 and up ratios. my question is,will a 2.76 ratio fit on a 3 series carrier,or do i have to find a 2 series carrier? does anyone have a nice used carrier or posi unit that this ratio will fit? __________________ 70 c10 stepside ,350v8, m-20 4 speed

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04-20-2002, 03:28 PM	#2
Fast68Chevy Account Suspended Join Date: May 2000 Location: IL Posts: 0	2.73-3.40 are series 3 3.73-lower ratio/higher numerical are series 4



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