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  1. 1

    Which company for narrowing a 29 spline 8 1/4 rear end

    I pulled a 8.25 sure grip 3.92 geared 29 spline rear end from a 2001 Durango R/T 4x4. It'll be going under my 400hp 74 Duster. Has anyone done this type of conversion before and what shops East of the Mississippi are best for narrowing the rear end and axles?
  2. 1

    What rear end gears for 904?

    I'm at odds with what rear end gear to run in my Duster. The engine is a 360 with a 268XE cam with aluminum eddy RPM heads, aluminum RPM intake, 750 Holley Double Pumper, and produces about 400hp on the motor. Rear end is a built 8 1/4. A 100 shot of NOS is also in the plan. The trans is a...
  3. 1

    B-body rear in an A-body anyone?

    As I undergo my 8 3/4 axle swap I wanted to check and see if anybody has ever put a 62-70 b-body axle under an a-body (i.e duster /dart/demon)? I found an article online where a guy moved the spring perches in 1/2" on both sides (to get the 43" a-body axle spacing) and bolted on a set of...
  4. 1

    Complete drivetrain upgrade -904 mated to an 8 3/4 rear end

    Okay, I'm about to swap out my entire drivetrain to a more beefier drivetrain and wanted some advice from someone who has done this before. I'm mating a built 904 trans to an 8 3/4 rear end. My question is, what do I need to connect the driveshaft to the 741 chunk? I know that there are...
  5. 1

    8 1/4 rear end strength

    I have a question for those of you who run an 8 1/4 rear end. How strong is the 8 1/4 rear when it comes to hot street/ occassional strip use? I know that 8 3/4's are what most people prefer but since the 8 1/4 is already under my duster, I'm thinking that it may be best and cheaper to just...
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