The '63 & '64 rear differentials had 17 spline side spiders. The '65 and up had 30 spline side spiders. The conversion axles are for 30 spline side spiders. CPP and ECE sell replacement side spiders also. You might check with some of the differential parts suppliers, and compare pricing.
[quote=tapeworm;4022007]
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Originally Posted by Captainfab
As Jason posted, CPP sells them as well as ECE and Summit Racing. If your truck is a '63 or '64 you will need to QUOTE]
Good to know that 
What spider gears need to be used? |