July 27th, 2013, 06:10 AM
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Member
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Join Date: Jan 2013
Location: San Pablo, CA
Truck: 66 Longbed
Posts: 32
Rep Power: 78
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Re: 3 on the tree
Quote:
Originally Posted by raycow
If you get an SM420 transmission (used 67 and earlier) it will bolt to your present bellhousing with no modifications needed. You will need to replace the driveshaft, and, of course, cut a hole for the shift tower.
If you get an SM465 (used 68-up), you will also need to have the bellhousing center hole bored out to approximately 5.125" to accept the front bearing retainer. This is a job any machine shop should be able to do.
Ray
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If I happen to find NSM 420 in a junkyard how would I identify it?
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