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  1. 6pktgo

    HP Manifolds vs TTI Headers ?

    Thank you, Very Good !!
  3. 6pktgo

    HP Manifolds vs TTI Headers ?

    1970 440 SIx Pack, nothing to crazy, on the dyno at 5500 rpm making 425 hp & 530 ft lbs of torque. I've always run original HP manifolds & factory H pipe, full exhaust. Is it worth it to install TTI headers ? Will it boost the horse power & if so by how much roughly ? Thanks in advance.
  4. 6pktgo

    How do you seal your exhaust manifolds/headers ?

    Factory HP manifolds, no gaskets ,just a thin layer of "The Right Stuff" 9 years ago & no leaks.
  5. 6pktgo

    exhaust manifold gasket

    I used "The Right Stuff". Expensive, but I put a thin layer on my factory HP exhaust manifolds, on my 70 440 six pack (advise from my engine builder), no gasket & 5 summers running & not a problem.
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