What clocking for 203 re-drill?

Discussion in 'OffRoad Design' started by DougP, Aug 16, 2002.

  1. DougP

    DougP Registered Member

    Jan 15, 2001
    Likes Received:
    Sonoma County, CA
    Question: What is the correct rotation of the 203 if re-drilling to bolt pattern of an NV4500? Should I just make sure the PTO cover is vertical? This is assuming I want to use a standard rotation Doubler.

    Background: I've got a 1975 Dodge 203 that I'm putting behind a 1995 Dodge NV4500. It's a perfect fit -- almost. /forums/images/icons/tongue.gif
    I need to change the bolts that hold the input bearing retainer/cover because they don't clear the inside of the factory 4500/241 adapter. I also need to change to the round 6-hole bolt pattern. That's where my problem comes, I don't know what rotation to drill the holes.
  2. Stephen

    Stephen 1/2 ton status Moderator Vendor

    Sep 15, 2000
    Likes Received:
    Carbondale Colorado
    Easiest way to do it is wait till you have the Doubler adapter bolted to the 203. That way you know the feet are lined up when you mark the holes.

    You could clearance grind the adapter for the bolt head clearance, that might be faster/easier than messing with the bolts or counterboring the bearing retainer.

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