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Discussion Starter #1
my dad has a 73 mach1 with a 351cj it has a ticking noise that gets faster with rpm i dont think its an exhaust leak but wanted to make sure it wasnt something that would need a rebuild, i got a vid but you cant really hear the noise, click the pic to see vid
 

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I didn't watch the video but I'd bet you have collapsed lifters.
 

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House of Windsor 4ever!
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IIRC, it should have a solid lifter cam. Probably time for a valve lash adjustment.
 

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House of Windsor 4ever!
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10,511 Posts
I am wrong. It does have a hydraulic lifter cam. The lash specs are as follows:

Lash: .100 to .150", with lifter fully collapsed and measured at valve stem tip.
Valve spring pressure: 285# @ 1.32".
 
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