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01-12-2005, 11:43 PM
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#1 |
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Registered User
Join Date: Apr 2002
Location: norco ca. 92860
Posts: 56
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What Ratio?
What is the laymens way to tell what gear ratio I have in my 72?
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01-12-2005, 11:50 PM
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#2 |
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Registered User
Join Date: Sep 2004
Location: Louisville, Ky
Posts: 329
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take the cover off and count the gears on ring and pinon. Divide large number by small number and there ya go.
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Brian 72 C10 longbed 350/th400 Let the world change you and you will change the world. |
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01-13-2005, 12:14 AM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Yup, and you get to drain the 33 year old oil, and check for metal chunks floating around too.
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01-13-2005, 12:47 AM
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#4 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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How about the "lazymans" way-jack up one rear wheel -put trans in netural-make a mark on drive shaft-make a mark on tire-turn tire 2 times while counting the # of times the drive shaft turns--little over 3 times= 3.08, about 3 3/4 times = 3.73 and so forth.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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01-13-2005, 12:56 AM
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#5 |
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Registered User
Join Date: Sep 2004
Location: Louisville, Ky
Posts: 329
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ooo, I like that way
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Brian 72 C10 longbed 350/th400 Let the world change you and you will change the world. |
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01-13-2005, 01:39 AM
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#6 |
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Still drivin' a Rat Rod
Join Date: Sep 2004
Location: Monett Missouri
Posts: 4,925
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That way don't small as bad either
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Rusty Member #13872 Instead of saying.....you are a discomfort in the back of my front.....one should be able to say...... you are a pain in the *a$#* 71 GMC LWB 49 Chevy 85 Chevy G20 Check out my website |
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01-13-2005, 06:31 AM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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yeah, but then you still have old oil that isn't doing it's job.
3.08 wasn't used in these trucks, it's a 3.07 |
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01-13-2005, 12:22 PM
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#8 |
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Registered User
Join Date: Jun 2002
Location: Knoxville Tenn.
Posts: 3,058
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Right 3.08 was cars-my bad.
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56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer |
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01-13-2005, 07:49 PM
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#9 |
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Registered User
Join Date: Dec 1999
Location: Old Mission, MI, USA
Posts: 2,510
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If it is a half ton that came with a 350, it came with 3.07s. If it came with a 307 or a 6 cylinder, it came with 3.73s. Any other ratio was optional and would be listed on the glove box sticker.
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Tim |
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