factory 340 muffler size?
The crushed corner stops the muffler from rattling against the parking brake cables and/or part of the car's frame. The center outlet is where the tailpipe attaches, as well as where the factory hangers attach. The offset inlet goes inboard, near the driveshaft. If you can't get mufflers this long with the crushed corners, the will probably hit on the car's frame at the outboard/rear corner. There are narrower mufflers that help avoid this issue, as well as mufflers with shorter cases and slightly longer inlet/outlet pipes on the market.
Here are Dynomax's on my car. They don't have the crushed corner and they used to rattle against the parking brake cables often:
(They have since been replaced with the correct mufflers from Accurate Exhaust Products.)
The crushed corner stops the muffler from rattling against the parking brake cables and/or part of the car's frame. The center outlet is where the tailpipe attaches, as well as where the factory hangers attach. The offset inlet goes inboard, near the driveshaft. If you can't get mufflers this long with the crushed corners, the will probably hit on the car's frame at the outboard/rear corner. There are narrower mufflers that help avoid this issue, as well as mufflers with shorter cases and slightly longer inlet/outlet pipes on the market.
Here are Dynomax's on my car. They don't have the crushed corner and they used to rattle against the parking brake cables often:
(They have since been replaced with the correct mufflers from Accurate Exhaust Products.)
