Thread: Upgrading a stock 400sb
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Old 11-02-2016, 11:45 PM   #5
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,246
Re: Upgrading a stock 400sb
You need to go with a bigger cam that what would normally be used in a 350. I would go with the X4262. Here is some info for you to look at.

http://www.67-72chevytrucks.com/vboa...d.php?t=612016
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