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Well, this could be an interesting build.

In my opinion, the 7162 could be problematic for several reasons. First off, with modern oils, flat tappet cams require following a very precise break in...

So just to clarify - the 7162 cam and roller rockers are installed and currently running in this engine?

Do you already have the cam and the roller rockers? If so, what are the part numbers as some of this stuff doesn't always play nice together.

Also, is this an automatic or stick shift truck?

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If you have stock cast iron oval port heads, aluminum heads can definitely make a difference in the performance of your 396 (now a 408). Depending on your budget, heads can be...