Glasspack Mufflers `60-`70 vintage

[dimaxion]

I make my own out of sprue. Yes some of it is large enough.

I worked in an Aftermarket and OEM Muffler factory from 1967 - 1974 . I make for my models the "Glass Pacs from Trees / Sprue / Runners . The tapered end type are tubes "swadged" down over the singular "tube" with enough sticking out of the Shell for spouts . Name was changed to Nipples in 1969 . This is where the Exhaust Pipes connect to Muflers . Tubes are the inner passages of the Muffler controlling the gas Flow . Two types are used . Flat Sheet Steel , perforated and formed then Stoppled into a seamed is the most common type Tube . These are crimped seam tubes . Similar to a can , the seam running the length .  The other type is made from Continuous Welded Thin Walled pipe . These are perforated for our subject here .One Baffle in inserted and spot welded . Requirement for it to be a Legal Noise Limiter . The Shell is packed with Fiberglass before the Shell is sealed . The second type is Spun Shut like a Muffler . Same one Baffle and packed with Fiberglass .

    I select a piece of Tree of the proper diameter .  Cut slightly overlong . Drill holes both ends . Square up the ends for the Spun Shell style . Insert the Spouts in the pre-drilled holes . Sand a Taper to the ends for the swadged type . I did on a couple use fine wire and Super Glue to  represent the "seam" on a Spun Type Mufflers many times . BTW , I scratch Mufflers too using flat tabs off the Trees .. . Resonators are the same as a GP with different guts .. In the '69 MY , Camero and Olds 442 offered a "Chambered Exhaust"  as a Performance Option . No Mufflers or Resonators . A one piece (MIG Welded to the Car's Bottom while being built) system of dimpled continuous weld thin walled pipe . It too had ONE Baffle to be legal . We were not permitted to make Replacement parts . Government  Intervention in the Early Years ..  Thanx ..

[Jantrix]

These also show up in the Revell-Monogram 1939 Chevy Coupe and Sedan Delivery. 

Quite right. And they are pretty nice.

[69NovaYenko]

Ditto...those are pretty nice.

[Bucky]

These are in the AMT '69 Cougar XR-7, kit #2202.

The white mufflers could be used for glass packs. They are supposed to represent the stock mufflers in the same Cougar kit.

The yellow ones are supposed to be stock mufflers in the AMT Snakebite '68 Mustang kit.

These orange ones are in the above Cuda kit. The 'Killer 'Cuda' kit doesn't have them. It is set up to only have side pipes, if it is built out of the box.

[oldscool]

The AMT 69 and 70 Impalas came with the header mufflers as well.

[TarheelRick]

Looking back through this thread I saw the picture of the "Purple Hornies" header mufflers.  I put a pair on my '72 C-10 Chevy pickup, connected to a set of Cyclone headers off the 350 engine.  They lasted just over two days, I could not hear my AM radio and the gas tank behind the driver's seat vibrated uncontrollably.  Replaced with a set of Thrush glasspacks with the exhaust running out in front of the rear tires.  Another hot set up in the early to mid 60's was '55 GMC truck mufflers, fairly cheap and had a nice 'legal' rumble.  Of course they were on the large side and if you were a bit low and there were any high manhole covers, then they wound up laying on the street.  Just an old man rambling.