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73-87chevytrucks.com
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10 Bolt Posi with 3:90 Gears
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Topic: 10 Bolt Posi with 3:90 Gears (Read 2397 times)
chronos
Registered Users
Posts: 169
10 Bolt Posi with 3:90 Gears
«
on:
August 07, 2009, 08:25:16 AM »
Picked up a 10 Bolt Posi with 3:90 Gears last night
I had never heard of that ratio before but thats what she is
Going to replace my old Open 10 bolt with 3:08's
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eventhorizon66
Senior Member
Posts: 1910
Re: 10 Bolt Posi with 3:90 Gears
«
Reply #1 on:
August 07, 2009, 10:54:59 AM »
3.90 is a widely available ratio for the 10 bolt and 12 bolt in aftermarket gear sets. Just not a common factory ratio. Cool find.
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'85 C10 SWB 350
700R4
TKO600
SUX2BU99
Senior Member
Posts: 1478
Re: 10 Bolt Posi with 3:90 Gears
«
Reply #2 on:
August 07, 2009, 12:49:50 PM »
Very nice, you should see a noticeable increase in your acceleration, as well as a decent hike in your highway RPMS lol
I had 3.92 ratio on my Dakota R/T's and it makes for great in-town acceleration and tire burning!
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85 Chevy Silverado C10 short, wide, yellow, 2wd. Lowered, 60-over 350 with Dart Iron Eagle heads and Comp Cams XE268 cam, TH350 w/ shift kit, 3.40 Gov-lok 12 bolt.
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10 Bolt Posi with 3:90 Gears