Re: 67 camaro convertible headers
Welcome to Team Camaro!
It wouldn't be the headers that would cause the problem, but an aftermarket exhaust made to work with headers may cause trouble, particularly if it has an X or H pipe crossover.
I had Dynomax headers on the 327 in my 68, mated to a repro OEM style exhaust (2 1/4" head pipes, transverse muffler behind the rear axle) and everything fit fine above the X-brace.
Guys running aftermarket kits like Flowmaster or Pypes have to shim the X-brace down or leave it off.
But again, the headers end well before the brace, so they aren't the problem...
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!