Any difference in noise level from a 656 vs. 706 muffler?

Posted by TX656 on July 02, 2007 at 19:51:57 from (65.41.68.197):

I put a new exhaust manifold on my 656 Gas. From reading the archives I apparently was shipped a 706 manifold. No big deal but I was wondering if the size of the exhause pipe and stack would make any difference in noise level. I don't have a 706 muffler to compare to but I would guess the muffler itself is identical. Should I put a 2 1/2" to 2" adapter on and use the new 656 muffler I already have in hand from the IH dealer or should I exchange it for a 706 muffler. I will put on a new exhause pipe either way. This next question is really stupid but...does the galvanized last longer than black or does it not make a difference. The pipe that was on it was a little lighter weight than water pipe and did not really take much unscrewing to remove.

Also, does anyone know home much quieter the operators position might be if I weld a curved piece of tubing onto the stack to point the exhaust forward instead of the straight up/rain cap combo.

All feedback appreciated.

Replies:

• Re: Any difference in noise level from a 656 vs. 706 muffler TX656 21:25:31 07/03/07 (0)
• Re: Any difference in noise level from a 656 vs. 706 muffler Nat 2 05:35:46 07/03/07 (1)
  • Re: Any difference in noise level from a 656 vs. 706 muffler Brian in MA 07:31:39 07/03/07 (0)

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