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Discussion Starter · #1 ·
does anyone know what the deal is with the 1986 5.0 motor when it comes to a cam install? i've been hearing different things and don't really know what to believe. i heard i need different pistons, then somenone else said no i dont. can you guys help me out here???? thanks
 

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Whatever cam you install. You need to check the Piston to Valve Clearance. The problem is the no valve reliefs on the stock 86 pistons.
 

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The 1986 pistons are true flat tops, with no valve reliefs. That really limits your cam choices, not to mention the speed density system as well.
 
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