- Mar 20, 2009
- 5
- 0
- 1
Greetings everyone!
This is my first post and I look forward to supporting this forum.
Six years – I’ve been restoring a 70 Fastback for that long. I’m getting close to driving it. It’s painted, the interior is redone and most important I installed a 351C 4V mated to a Tremec TKO 5 speed. I’m running Hooker long tube headers and have a lot of cam in the car.
I’m ready to install an exhaust and I need some advice.
I wanted to do something different: Install catalytic converters! To reduce emissions. I was informed that my good motives for the environment were not a good idea – converters won’t work on that installation. So my first question, is that true? I would bolt the converters directly to the headers and run 3 inch pipe to compensate for their restrictiveness.
The other question is what muffler to use. I do not want the loud boomy sound. I’ve installed a lot of Dynamat to keep the interior quiet, and wanted a muffler that would avoid the booming low frequency rumble. What would you recommend?
If I ran a larger diameter exhaust, would it be worth it to install a crossover X, H or otherwise)?
Last, I installed a fuel cell. The fuel cell required a “bathtub” to be welded in and there may not be much clearance between the bathtub and the leaf springs to run the exhaust to the bumper. Would dumping the exhaust just forward of the axle result in more noise production?
Heli
This is my first post and I look forward to supporting this forum.
Six years – I’ve been restoring a 70 Fastback for that long. I’m getting close to driving it. It’s painted, the interior is redone and most important I installed a 351C 4V mated to a Tremec TKO 5 speed. I’m running Hooker long tube headers and have a lot of cam in the car.
I’m ready to install an exhaust and I need some advice.
I wanted to do something different: Install catalytic converters! To reduce emissions. I was informed that my good motives for the environment were not a good idea – converters won’t work on that installation. So my first question, is that true? I would bolt the converters directly to the headers and run 3 inch pipe to compensate for their restrictiveness.
The other question is what muffler to use. I do not want the loud boomy sound. I’ve installed a lot of Dynamat to keep the interior quiet, and wanted a muffler that would avoid the booming low frequency rumble. What would you recommend?
If I ran a larger diameter exhaust, would it be worth it to install a crossover X, H or otherwise)?
Last, I installed a fuel cell. The fuel cell required a “bathtub” to be welded in and there may not be much clearance between the bathtub and the leaf springs to run the exhaust to the bumper. Would dumping the exhaust just forward of the axle result in more noise production?
Heli