I do not see why you could not replace your 2 pc with a one piece shaft if the dimensions are right. In my opinion the primary reason for using the closed center front shaft was to be able to have a single transmission that could be used in either the 3100 or the 3600 series trucks. Certainly the length of the shaft must be considered but assuming it is 3" x .083 or larger and not over 55" weld/weld you should be OK. Properly built it doesn't require balancing either. If it needs to be longer than that then YES, a carrier bearing and rear shaft are necessary.


1953 Chevy 5-window 3100
In the Stovebolt Gallery
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Dave
Engine & Driveline Moderator

If you can't make seventy by an easy road, don't go. ~~ Mark Twain