I would like to replace the current 3" single exhaust with a Dual setup from a '98.

Is it a simple parts swapping or more complicated?

Anyone here ever done this?

 

No 4th Gen V8 has a true dual exhaust. 98-02 LS1 engines have the same Y-pipe, intermediate pipe, single cross-flow muffler with dual outlets as the LT1 engine cars.

 

Thanks for that info. Do you have any sugestions for dual exhaust?

 

Do you want to include headers - they would make a much larger improvement than hooking duals up to the stock manifolds? There are also huge 3.5” and 4” catback systems (not duals) that can support over 700 HP.

A lot of vendors have given up on the 1993-97 LT1 cars. Texas Speed has dual systems for the 98-02 LS1 cars. Obviously the LS1 headers won't work, but you might be able to adapt the exhaust pipes to LT1 headers:

https://www.texas-speed.com/c-3290-t...t-systems.aspx

Note that they have a system that dumps in front of the rear axle, and another that run over the rear axle, Going over the axle is the hard part, because the panhard bar/brace that maintains side-to-side alignment of the axle is in the way. But there is a kit to relocate the panhard bar/brace.

https://www.bmrsuspension.com/?page=...280&superpro=0

There are some older threads on this site that show what people have done for true duals. A search should turn them up, but since they are going to be fairly old threads the links to photos and products may no longer work.

I had a shop put together dual 3” pipes that dumped in front of the axle,

https://www.camaroz28.com/g/picture/24303926