Hi Guys,
Ok my car has the 360 mag in it with 209/217 degree roller cam and headers. It has a single 2.25" to 2.25" to 2.5" system on it. It has one muffler what they call a "turbo muffler", its a local built thing, oval and about 14" long.
The engine sounded quite raspy and well was noisy! It has annoyed me for quite some time and I finally got another smaller muffler added which is tucked in between the leaf spring and the tank.
The car now has a deeper quieter note to it, its really...
Back Pressure - Can anyone explain?
