Can You Help Me ID These Mufflers?

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al8apex · #1 04-08-2011, 05:37 PM

Are both 2 in and 2 out?

My 1971 Chevy (71 only) parts book shows the 3996331 as a Camaro muffler, 350 w/4bc AND 400 w/4bc, that means SS 350 & 396 & Z28 IMHO

My all Chevy through 75 shows the above for 71-74 w/4bc, NOT 70 though, that number is 3983066 ...

not for Novas either

Hope that helps

no sign of the other number ...

the 8 in front of the other part number is odd, not a normal Chevy number, it MAY be a Firebird or a 74 GTO (Nova), I do not have any Pontiac books that go back that far

musclecar fan · #2 04-08-2011, 07:31 PM

Thanks Jim,

Yes they are both 2 in 2 out. Can I e-mail you a picture of the number layout on the second muffler? What e-mail should I send it to?

Thanks, Mark

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