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08-25-2006, 03:38 PM
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#1 |
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Registered User
Join Date: Aug 2006
Location: Georgia
Posts: 850
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What is the gear ratio?
Does anyone know what the gear ratio is on a 1968 C10 SWB stepside with 250 inline six and 3-speed manual trans.?
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08-25-2006, 05:05 PM
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#2 |
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Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: What is the gear ratio?
Most were 3.73. I think 4.10 came in second.
__________________
Fred There is no such thing as too much cam...just not enough engine. 
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08-25-2006, 05:38 PM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: What is the gear ratio?
38 years ago it had a 3.73... no tellin what's there now.
I recomend popping the cover and counting the teeth. This way you can replace the oil that is old and 50% effective too. |
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08-26-2006, 04:56 PM
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#4 |
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Registered User
Join Date: Aug 2006
Location: Georgia
Posts: 850
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Re: What is the gear ratio?
My grandfather bought the truck new, then my dad got it, and now I have it so I know it's still got the original parts on it. Thanks for the help.
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08-26-2006, 04:59 PM
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#5 |
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Registered User
Join Date: Feb 2003
Location: Mesquite, Tx
Posts: 396
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Re: What is the gear ratio?
Have you checked the glove box door? Ours is a GMC but it's marked on the inside of the glove box door. Ours was originally a 250/I6, leaf spring, Dana 44 with 3.54's
__________________
GM 330HP/350, Magnuson 122HH, Tremec TKO 5spd |
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08-26-2006, 05:04 PM
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#6 |
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Registered User
Join Date: Aug 2006
Location: Georgia
Posts: 850
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Re: What is the gear ratio?
I haven't checked yet. I'm not sure how readable the sticker is anymore though because it's dried out, cracked, and faded.
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08-26-2006, 05:14 PM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: What is the gear ratio?
wow, never heard of a 3.54 gear in a non big block truck. interesting.
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08-27-2006, 10:20 AM
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#8 |
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Roadtrip!
 
Join Date: Feb 2003
Location: Grand Rapids MN
Posts: 13,787
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Re: What is the gear ratio?
Andy, my first truck was a 68 gmc 6 cyl, 3 speed with 3:54 gears.
__________________
67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto |
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08-27-2006, 02:43 PM
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#9 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: What is the gear ratio?
interesting.
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