Flowmaster 40's

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TJ805

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Ventura County
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TJ
Truck Year
1973
Truck Model
K10
Engine Size
350
WHAT THE HELL DID I FIND IN THESE MUFFLERS? Got 'em for $10 each shook all this woodlike stuff out and soaked em in Jasco. They seem like new, but the mystery remains. This is not wood. The cellular composition is completely symmetrical and gridlike...

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Dysco

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Wisconsin
First Name
Rick
Truck Year
1979
Truck Model
K10
Engine Size
400
Bee or wasp nest would be my guess.
 

Charlie

Mopar by Birth. Chevy by Choice.
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Euless, Texas
First Name
Don
Truck Year
1974
Truck Model
Cheyenne 10 LWB
Engine Size
350/TH350/AC/4 BBL Quadrajet
Reminds me of stuff that may have come out of a older failed catalytic converter. I remember an older one 20 to 25 years ago failing and blowing crap out the tailpipe. IMO.
 

bigcountry78

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Hickory, North Carolina
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James
Truck Year
1978
Truck Model
K10 Custom Deluxe
Engine Size
350
Reminds me of stuff that may have come out of a older failed catalytic converter. I remember an older one 20 to 25 years ago failing and blowing crap out the tailpipe. IMO.
That was my first thought. Old converter material.
 

gotyourgoat

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NRV Virginia
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gotyourgoat
Truck Year
1984
Truck Model
c10
Engine Size
smokin' 305
Catalytic converter core, or what's left of it. Must have been in there a while. All the sharp edges are knocked off like they were in a rock tumbler.
 

bucket

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Usually not in Ohio
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'77, '78, '79, '84, '88
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K5 thru K30
Engine Size
350-454
Yep, chunks of a failed converter for sure.
 

78C10BigTen

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pennsylvannia
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Ted
Truck Year
1978
Truck Model
C10 BIG TEN
Engine Size
350
That stuffs worth $10 a pound lol
 

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