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Old 03-04-2010, 07:46 PM   #1
davepl
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Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,334
Some 4x4 questions

Is there a physical (ie: fitment, compatibility with transfer case, etc) reason that GM never offered a big block in the K series (4x4) trucks? Or was it just a marketing decision? Or maybe the transfer case couldn't handle the torque?

Also, when buying a 4x4, what are the desirable drivetrain options? Can someone translate these into "12-bolt, 14-bolt, Dana 44, Dana 60, etc?"

No option - what's standard?
F43 - 9000# front axle
F44 - 11000# front axle
F47 - 5000# front axle
F48 - 7000# front axle
F49 - "Heavy Duty" front axle (K20 only)
F54 - 12000# front axle

Thanks,
Dave
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