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08-18-2016, 07:28 PM
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#1 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,334
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What was standard gearing for a half-ton 307 in '68?
Subject line is the question... does anyone know?
I'm wondering what the gear ratio would have been by default for a 1968 GMC w/307 & TH400. I don't know the axle, unfortunately, but I presume it was the default one.
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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08-18-2016, 08:00 PM
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#2 |
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Registered User
Join Date: Nov 2008
Location: Gwinnett GA
Posts: 1,803
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Re: What was standard gearing for a half-ton 307 in '68?
Ratio was 3.73 with most 307 V8s. There isn't a surefire answer 48 years later as to what is under any given truck.
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1982 K10 SWB 1987 V20 - Sold - Doh! |
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08-18-2016, 08:34 PM
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#3 |
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Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: What was standard gearing for a half-ton 307 in '68?
Standard was 3.73 with 3.08 and 4.10 optional
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My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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