69 cuda with 360 stroked to 410 Way the hell to loud.
The car was being built to be a drag car, we got it and got it useable for street the exhaust was all already on it.
The car has roughly 600hp, and is using flow master 40 series mufflers. Any mufflers i can easily chuck in there to quiet this thing down? Driving for an hour and your ears ring. You cant have a conversation standing beside it idling.
Is power important on the street? As in, would a loss of 50/75 or better HP while on the street an OK thing?
Here’s the catch to a quiet exhaust, the muffler has to get longer for more sound deadening. Multiple mufflers may be needed for a conversation.
Try this. Glass packs with a large inner diameter, as long as possible, connected to and in front of the mufflers. Done in this order, it will help quite the interior. Glass pack mufflers normally have a very thick case shell that helps contain sound while dampening the exhaust note within.
Turbo mufflers are the quietest but most restrictive of any performance muffler. Having used the dyno max quite flow mufflers before & cutting them open, it’s easy to see where there the quite and power robbing. These mufflers by themselves can be used as a stock replacement muffler.
As above, tail pipes help a lot as well. Chrysler used a resonator in the tail pipe section on many cars for years. My ‘74 Duster had one, my ‘18 Ram has one. At the end of the tail pipe creates a quieter sound at the end of the system for the outside people, not inside. This is why I suggested glass packs before and connected to the front of the muffler.
Again. Glass packs and mufflers should be as long as possible.
Best of luck on your attempts.
