Sweet-Thunder Exhaust Systems 4" Corvette Side Exhaust Inserts

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Challenger SRT8

2010 2011 Dodge Challenger R/T

1967 - 1969 Camaro / Firebird Chambered Exhaust

2010 2011 Camaro Cat-Back Stainless Chambered Exhaust System

1978-87 El Camino

Sweet-Thunder High Performance Inserts
for the 3-1/2" & 4" Corvette Side Exhaust / Side Pipes

We would like to thank Dave & Lynda and their 1975 Corvette for helping during the development stage of this project. Their Corvette has many engine and body modifications. We appreciate their patience and help.

These large 4-inch Corvette Sidepipes have been popular for many years because of their macho looks and high performance possibilities.

With these large “Side Cannons” when it comes to sound you've had two choices: wide open (with maybe a bit of too much BIG SOUND for some.

or the original style insert with it's 1 7/8” inner baffle tube maybe a little too restrictive for some.

To solve the problem we've made our inserts with your choice of 5 different inner baffle tubes (1.75, 2”, 2.25”, 2.5”, & 2.75") for a wide range of sound and performance. These slide in inserts are made with aluminized steel and are 29¼” in length.

For vehicles with 3-1/2" sidepipes, such as: Grand Sports, Cobras. We offer the same inserts to fit these applications. Priced as the standard sizes, 2-3/4"inner not available.

**Sound Levels**
Produced by our test car with 350cid 10.5:1 compression , Demon Carb, TorkerII intake, high lift & duration cam..
ALL testing done 3' high, 5'@ 45deg. away from pipe exit db scale A
Insert Size	Idle	2500 RPM
4" No Insert (open tube)	106/107	126/7
2-3/4" DL275	92/94	97/98
2-1/2" DL250	83/85	98/101
2-1/4" DL225	82/85	95/96
2" DL200	80/82	93/94
1-3/4" DL175	78/79	92/93

Richard from Ocean City installed a set of 2.5" DL's on his 1969 Vette and he shared this audio with us, sounds like he's letting off just as he hits 55mph.......

Click here to listen

Healthy_vette

As you can see in this photo the original insert, with it's 1 7/8” inner, is not very conducive to good exhaust flow. The front end of our insert, has a very open funnel to guide the exhaust into the chambered muffler, regardless of the inner baffle tube diameter.

Our Price: $175 (per pair) (Plus shipping)
Insert with 1-3/4" inner baffle tube Part# is DL175

Our Price: $150 (per pair)
(Plus shipping)

Insert with 2" inner baffle tube.
Part # is DL 200

Insert with 2 1/4" inner baffle tube.
Part # is DL 225

Insert with 2 1/2" inner baffle tube.
Part # is DL 250

Stainless Steel
Our Price: $300 (per pair))
(Plus shipping)

Insert with 2" inner baffle tube.
Part # is DL 200SS

Insert with 2 1/4" inner baffle tube.
Part # is DL 225SS

Insert with 2 1/2" inner baffle tube.
Part # is DL 250SS

Sweet Thunder "Side Cannon" Inserts with your choice of inner baffle tubes.

For those that like the big sound and just want a few DB knocked off here's the insert. Our 2.75" inner on the left next to the 2.5" on the right. the 2.75 comes with a 3.5" outer casing and is built to flow.

Part# DL275 $200 pr.

Stainless Version

Part# DL275SS $400 pr.