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06-12-2005, 10:38 PM | #1 |
Registered User
Join Date: Nov 2004
Location: dawson pennsylvania
Posts: 12
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What Posi unit will fit?
Hey Guys,
Anyone know what vehicle posi unit will work in my carrier?I have a 71 chevy c10 ,swb, shortbed,307,3 speed,coil spring 12 bolt rear.I think that should be all the info.If you need more let me know. Thanks Mike |
06-12-2005, 11:43 PM | #2 |
Senior Member
Join Date: Jul 2004
Location: Estherville, Iowa
Posts: 3,371
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If you are keeping your current ring and pinion, you will need to get the gear ratio also. I'm goint to guess it would be a 3.07 ratio. Gear ratio determines whether you need a 3 series or 4 series posi carrier. I beleive the split is at 3.73, that is 3.73 and higher numerically like 4.11, 4.56 use the "4' series carrier, and the 3.42 and lower numeriacally like 3.07 use the "3" series carrier, someone correct me if I am wrong. That same type rear was used from mid 60's to late 70's in trucks , no car swap available IIRC.
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1968 C10 307 3spd Long Fleet ------ http://67-72chevytrucks.com/vboard/s...d.php?t=201103 1970 C10 305 Super T10 Long Fleet --- http://67-72chevytrucks.com/vboard/s...d.php?t=202285 1971 C20 383 TH350 Dana Posi ----- http://67-72chevytrucks.com/vboard/s...d.php?t=206894 2001 GMC Sierra 1500 C3 6.0 Last edited by Green Machine; 06-12-2005 at 11:43 PM. |
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