Old 04-16-2022, 10:52 AM
dans1967 dans1967 is offline
Join Date: Mar 2002
Location: Massachusetts
Posts: 43
Default muffler advice

67 gto with ram air manifolds, 2.25 exhaust pipes, no crossover, need new mufflers (blew one up) I want good sound but do not want a loud drone in the cabin. What is out there that would accomplish my goal?

Old 04-16-2022, 12:24 PM
Tom Hand's Avatar
Tom Hand Tom Hand is offline
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Join Date: Dec 1999
Location: Lee's Summit, MO, USA
Posts: 990

Pypes' new Turbo Pro is a nice one. Dynomax Super Turbo 17749 or 17747 are nice. 747 its 2.25" I think. Long case. Perfect for a 67.
Tom Hand

Tom Hand
Old 04-16-2022, 07:05 PM
hobbygto65's Avatar
hobbygto65 hobbygto65 is offline
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Join Date: Jan 1970
Location: Brainerd,MN
Posts: 1,702

Flowmaster 44's.

Old 04-16-2022, 07:29 PM
gtobob67 gtobob67 is offline
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Join Date: Feb 2008
Location: Taunton, Ma.
Posts: 129

Dynomax Super Turbo 17749 here. Same set-up as yours, except I do have an x-pipe crossover. You won't be disappointed.

Old 04-16-2022, 09:11 PM
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AG AG is offline
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Join Date: Feb 2000
Location: NH
Posts: 2,902

Another vote for ST 17749.

1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
Old 05-11-2022, 03:58 PM
dans1967 dans1967 is offline
Join Date: Mar 2002
Location: Massachusetts
Posts: 43

Went with the Dynomax 17732. These sound great, very satisfied.
Thanks for the help


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