Bad lifter? or loose rocker?

[66 Racer]

Hey guys,

when im running at high RPMs i cant really hear the sound, just now i was listening for it when going through the mall, i think i heard it, but if it was an exuast leak wouldnt it get liuder with the RPMs? Im gonna check though, i had a loose bolt on the collecters, but i dont think it would make a noise, then again i didnt think it could from the head/header area either.

I'll check my headers, but i tightened them about a month ago.

Thanks guys, i'll keep you posted


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Under Construction 66 Coupe
-289 V8 - 600cfm Holley -Tri-Y Headers - Flowmaster 2.5 dual exaust, Centerforce Dual Friction