66-70 B-body Exhaust Systems

2.	Header-back Exhaust Systems (Line B80-B111) • 66-67 Belvedere, Charger, Coronet, Satellite, Superbird Exhaust Systems • 66-70 Station-Wagon Exhaust Systems • 67 GTX Exhaust Systems • 68-70 Belvedere, Charger, Coronet, GTX, Road Runner, Satellite, SuperBee, Superbird Exhaust Systems

EXHAUST SYSTEM DETAILS

Our performance exhaust systems are designed and fabricated in-house using sophisticated CNC machinery and mandrel bent for a precise fit and uninterrupted exhaust flow. Systems are constructed of 16 gauge aluminized tubing to resist heat and corrosion damage. Our high performance dual systems have proven to deliver more horsepower and torque over stock size exhaust systems while improving exhaust flow.

Exhaust-Pipes: Manifolds-back exhaust systems will include Exhaust-Pipes (aka Head-pipes) to bolt-up to the manifolds. When ordering, the 7-digit casting no's will be required.

Mid-pipe Designs: Exhaust systems are available with either an H-pipe or X-pipe mid-section assembly.

• The H-pipe design has proven to provide increased horsepower over the stock straight exhaust pipes.

• The X-pipe design has proven to improve power and sound tone compared to the traditional H-pipe design mid-section.

Mufflers: 66-67 B-body exhaust systems were designed using the Dynomax Super Turbo mufflers. Our personal preference due to the mild sound level, true performance tone, and minimal interior resonation noise compared to other mufflers.

When choosing to use mufflers other than the Dynomax Super Turbo, please note that modification may be required to the muffler slips for proper fit and alignment due to muffler case lengths and width differences. Modification may include cutting, welding, notching and adding material for additional length. Applications using mufflers longer than systems were design with, will require shortening the outlet end of the mid-pipe (H-or X). Using mufflers shorter than systems were designed with, will require adding additional material at the inlet end of the muffler. We offer pre-fabricated tube length extenders "Slip-Connectors" for additional material, sold separately.

• 2.5" Exhaust Systems designed with muffler #17748, offset inlet/center outlet, 4.25 x 9.75" canister, 25.5" overall length

• 3.0" Exhaust Systems designed with muffler #17769, offset inlet/center outlet, 5.50 x 11.0" canister, 27.0" overall length.

Muffler Hangers: Heavy-duty design, requires muffler hanger body brackets for mounting. (Sold separately if vehicle not equipped with brackets)

Over-Axle Tailpipes:

• 66-67 Belvedere, Charger, Coronet, Satellite, Superbird tailpipes are designed with an upsweep outlet, turndown finished angle-cut. (DIY modification required to run exhaust tips)

• 66-70 Station-Wagon tailpipes are designed corner-exit with a blunt-cut.

• 67 GTX tailpipes are designed like original GTX style with a blunt-cut.

• 68-70 Belvedere, Charger, Coronet, GTX, Road Runner, Satellite, SuperBee, Superbird tailpipes are designed straight with a finished angle-cut.

Tailpipe Hanger Receptacles:

• 66-67 hangers are a floor pan mount design with rubber block insulators.

• 68-70 hangers are a bottom frame rail mount design with rubber block insulators.

Installation: Bolt-on design, no welding required. Please read the installation instructions that are supplied with the exhaust system. We recommend starting the installation with the tailpipes working towards the engine.

1.	66-70 B-BODY MANIFOLDS-BACK EXHAUST SYSTEMS

Manifolds-back exhaust systems include

• Exhaust-Pipes (aka Head-pipes)

• Mid-Section Assembly (H-pipe or X-pipe design)

• Dynomax Super Turbo Mufflers (Available with or without)

• Muffler Hangers (Body brackets sold separately)

• Over-Axle Tailpipes

• Tailpipe Hanger Receptacles

• Clamps & hardware necessary for the bolt-on installation

(!) Required when ordering: Left & right 7-digit manifold casting no's,

and Auto or Standard transmission

• Manifold casting no's list: 273-360 383-440 426-Hemi

(We mfg pipes to bolt-up to manifolds, we do not sell manifolds)

• Application Footnotes: 04, 10, 57, 61

• Accessories & Component Parts

Line #

Mid-Pipe Design

Choose H or X

Mufflers

Choose with or without

Tailpipe Style

O.D.

Tube Size

Price

Manifolds-back systems

(Click P/N for illustration .PDF)

PART NO'S...

66-67 BELVEDERE, CHARGER, CORONET, SATELLITE, SUPERBIRD

B48	H-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 888.95	P/N: B25 MWM6667
B49	H-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 731.95	P/N: B25 MNM6667
B50	H-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 1014.95	P/N: B30 MWM6667
B51	H-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 779.95	P/N: B30 MNM6667

B52	X-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 945.95	P/N: XB25 MW6667
B53	X-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 786.95	P/N: XB25 MN6667
B54	X-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 1068.95	P/N: XB30 MW6667
B55	X-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 861.95	P/N: XB30 MN6667

66-70 STATION-WAGONS 67-70 STATION WAGONS

B56	H-pipe	with Mufflers	Corner-exit, blunt-cut	2.5"	$ 888.95	P/N: B25 MWM6670-W
B57	H-pipe	without Mufflers	Corner-exit, blunt-cut	2.5"	$ 731.95	P/N: B25 MNM6670-W
B58	H-pipe	with Mufflers	Corner-exit, blunt-cut	3.0"	$ 1014.95	P/N: B30 MWM6670-W
B59	H-pipe	without Mufflers	Corner-exit, blunt-cut	3.0"	$ 802.95	P/N: B30 MNM6670-W

B60	X-pipe	with Mufflers	Corner-exit, blunt-cut	2.5"	$ 945.95	P/N: XB25 MW6670-W
B61	X-pipe	without Mufflers	Corner-exit, blunt-cut	2.5"	$ 786.95	P/N: XB25 MN6670-W
B62	X-pipe	with Mufflers	Corner-exit, blunt-cut	3.0"	$ 1068.95	P/N: XB30 MW6670-W
B63	X-pipe	without Mufflers	Corner-exit, blunt-cut	3.0"	$ 861.95	P/N: XB30 MN6670-W

67 PLYMOUTH GTX 67 PLYMOUTH GTX

B64	H-pipe	with Mufflers	GTX style, blunt-cut	2.5"	$ 888.95	P/N: B25 MWM67-GTX
B65	H-pipe	without Mufflers	GTX style, blunt-cut	2.5"	$ 731.95	P/N: B25 MNM67-GTX
B66	H-pipe	with Mufflers	GTX style, blunt-cut	3.0"	$ 1014.95	P/N: B30 MWM67-GTX
B67	H-pipe	without Mufflers	GTX style, blunt-cut	3.0"	$ 802.95	P/N: B30 MNM67-GTX

B68	X-pipe	with Mufflers	GTX style, blunt-cut	2.5"	$ 945.95	P/N: XB25 MW67-GTX
B69	X-pipe	without Mufflers	GTX style, blunt-cut	2.5"	$ 786.95	P/N: XB25 MN67-GTX
B70	X-pipe	with Mufflers	GTX style, blunt-cut	3.0"	$ 1068.95	P/N: XB30 MW67-GTX
B71	X-pipe	without Mufflers	GTX style, blunt-cut	3.0"	$ 861.95	P/N: XB30 MN67-GTX

68-70 BELVEDERE, CHARGER, CORONET, GTX, ROAD RUNNER, SATELLITE, SUPERBEE, SUPERBIRD

B72	H-pipe	with Mufflers	Straight, angle-cut	2.5"	$ 888.95	P/N: B25 MWM6870
B73	H-pipe	without Mufflers	Straight, angle-cut	2.5"	$ 731.95	P/N: B25 MNM6870
B74	H-pipe	with Mufflers	Straight, angle-cut	3.0"	$ 1014.95	P/N: B30 MWM6870
B75	H-pipe	without Mufflers	Straight, angle-cut	3.0"	$ 802.95	P/N: B30 MNM6870

B76	X-pipe	with Mufflers	Straight, angle-cut	2.5"	$ 945.95	P/N: XB25 MW6870
B77	X-pipe	without Mufflers	Straight, angle-cut	2.5"	$ 786.95	P/N: XB25 MN6870
B78	X-pipe	with Mufflers	Straight, angle-cut	3.0"	$ 1068.95	P/N: XB30 MW6870
B79	X-pipe	without Mufflers	Straight, angle-cut	3.0"	$ 861.95	P/N: XB30 MN6870

*** Prices do not include Shipping, Handling or California Sales Tax, if applicable ***

Prices subject to change without notice.

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2.	HEADER-BACK EXHAUST SYSTEMS (Headers sold separately)

Header-back exhaust systems include

• Mid-Section Assembly (H-pipe or X-pipe design)

• Dynomax Super Turbo Mufflers (Available with or without)

• Muffler Hangers

• Over-Axle Tailpipes

• Tailpipe Hanger Receptacles

• Clamps & hardware necessary for the bolt-on installation

(!) Header adapters will be required to transition headers to the exhaust system.

(!) Header information required when ordering: Header model no. & collector size.

• Application Footnotes: 01, 04, 10, 57, 61

• Accessories & Component Parts

Mid-Pipe Design

Choose H or X

Mufflers

Choose with or without

Tailpipe Style

O.D.

Tube Size

Price

Header-back systems

(Click P/N for illustration .PDF)

PART NO'S...

66-67 BELVEDERE, CHARGER, CORONET, SATELLITE, SUPERBIRD

Line #

B80	H-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 747.95	P/N: B25 HWM6667
B81	H-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 636.95	P/N: B25 HNM6667
B82	H-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 899.95	P/N: B30 HWM6667
B83	H-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 753.95	P/N: B30 HNM6667

B84	X-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 828.95	P/N: XB25 HW6667
B85	X-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 693.95	P/N: XB25H N6667
B86	X-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 985.95	P/N: XB30 HW6667
B87	X-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 747.95	P/N: XB30H N6667

*** Prices do not include Shipping, Handling or California Sales Tax, if applicable ***

Prices subject to change without notice.

66-70 STATION-WAGONS 67-70 STATION WAGONS

Line #

B88	H-pipe	with Mufflers	Side-exit, blunt-cut	2.5"	$ 747.95	P/N: B25 HWM6670-W
B89	H-pipe	without Mufflers	Side-exit, blunt-cut	2.5"	$ 636.95	P/N: B25 HNM6670-W
B90	H-pipe	with Mufflers	Side-exit, blunt-cut	3.0"	$ 899.95	P/N: B30 HWM6670-W
B91	H-pipe	without Mufflers	Side-exit, blunt-cut	3.0"	$ 753.95	P/N: B30 HNM6670-W

B92	X-pipe	with Mufflers	Side-exit, blunt-cut	2.5"	$ 828.95	P/N: XB25 HW6670-W
B93	X-pipe	without Mufflers	Side-exit, blunt-cut	2.5"	$ 693.95	P/N: XB25 HN6670-W
B94	X-pipe	with Mufflers	Side-exit, blunt-cut	3.0"	$ 985.95	P/N: XB30 HW6670-W
B95	X-pipe	without Mufflers	Side-exit, blunt-cut	3.0"	$ 747.95	P/N: XB30 HN6670-W

*** Prices do not include Shipping, Handling or California Sales Tax, if applicable ***

Prices subject to change without notice.

67 PLYMOUTH GTX 67 PLYMOUTH GTX

Line #

B96	H-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 747.95	P/N: B25 HWM67-GTX
B97	H-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 636.95	P/N: B25 HNM67-GTX
B98	H-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 899.95	P/N: B30 HWM67-GTX
B99	H-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 753.95	P/N: B30 HNM67-GTX

B100	X-pipe	with Mufflers	Turndown, angle-cut	2.5"	$ 828.95	P/N: XB25 HW67-GTX
B101	X-pipe	without Mufflers	Turndown, angle-cut	2.5"	$ 693.95	P/N: XB25 HN67-GTX
B102	X-pipe	with Mufflers	Turndown, angle-cut	3.0"	$ 985.95	P/N: XB30 HW67-GTX
B103	X-pipe	without Mufflers	Turndown, angle-cut	3.0"	$ 747.95	P/N: XB30 HN67-GTX

*** Prices do not include Shipping, Handling or California Sales Tax, if applicable ***

Prices subject to change without notice.

68-70 BELVEDERE, CHARGER, CORONET, GTX, ROAD RUNNER, SATELLITE, SUPERBEE, SUPERBIRD

Line #
B104	H-pipe	with Mufflers	Straight, angle-cut	2.5"	$ 747.95	P/N: B25 HWM6870
B105	H-pipe	without Mufflers	Straight, angle-cut	2.5"	$ 636.95	P/N: B25 HNM6870
B106	H-pipe	with Mufflers	Straight, angle-cut	3.0"	$ 899.95	P/N: B30 HWM6870
B107	H-pipe	without Mufflers	Straight, angle-cut	3.0"	$ 753.95	P/N: B30 HNM6870

B108	X-pipe	with Mufflers	Straight, angle-cut	2.5"	$ 828.95	P/N: XB25 HW6870
B109	X-pipe	without Mufflers	Straight, angle-cut	2.5"	$ 693.95	P/N: XB25 HN6870
B110	X-pipe	with Mufflers	Straight, angle-cut	3.0"	$ 985.95	P/N: XB30 HW6870
B111	X-pipe	without Mufflers	Straight, angle-cut	3.0"	$ 747.95	P/N: XB30 HN6870

*** Prices do not include Shipping, Handling or California Sales Tax, if applicable ***

Prices subject to change without notice.

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66-70 B-BODY FOOTNOTES

01	HEADER ADAPTERS Header adapters will be required to transition Headers to an Exhaust System. TTi Headers are supplied with adapters, however, if transitioning the exhaust system from headers other than TTi's, a Header Adapter Kit will be required. Kits include all necessary material to custom fabricate adapters. Sold separately. Accessories & Component Parts
04	MUFFLER HANGER BODY BRACKET Bracket(s) are required if the vehicle is not equipped for a dual exhaust system or if the vehicle has been stripped of all mounting brackets. The OE brackets are located behind the rear seats and mounted directly to the body panel. Sold separately. Accessories & Component Parts
10	DANA-60 REAR Tailpipes will not fit applications with the RMS Street-Lynx rear suspension / Dana-60 rear-end. However, tailpipes will fit a Dana-60 rear-end with the factory suspension leaf springs.
57	RELOCATED LEAF-SPRINGS Tailpipes will not fit applications if the leaf springs have been moved inboard for added tire clearance. However, clearance can be achieved in the following applications, 62-76 A-bodies, 62-67 B-bodies & 65-73 C-bodies by running a Fuel Cell and Mufflers with an offset inlet / offset outlet. Mufflers may require modification to the muffler slips for proper fit and alignment due to the muffler case length and width differences.
61	GEAR VENDORS OVERDRIVE X-pipe exhaust systems will not clear the Gear Vendors overdrive unit. (The GVOD tail shaft occupies the same space as the X in the X-pipe mid-section)

ACCESSORIES & COMPONENT PARTS

Part No.

Price

HEMI HEAT TUBE NIPPLE

Tube nipple installed in the passenger-side Hemi exhaust-pipe. Special-Order lead-time: 5-7 days

MISC-HTEP

$ 58.80 ea.

MUFFLER HANGER BODY BRACKETS

Bracket(s) are required if the vehicle is not equipped for a dual exhaust system or if the vehicle has been stripped of all mounting brackets. Single/Dual OE bracket(s) are located behind the rear seats mounted directly to the body panel.

E2530BB

E2530BB2

$ 37.35 ea.

$ 74.70 /set

OVAL Polished Exhaust Tips (Plymouth)

304SS, Slip-on style, inlet notched for clamping, 1.75 x 4.25 x 11.5" overall length, single wall, angled-cut, includes band clamps and rivets to firmly hold tips in place.

2.5" I.D. inlet ... TIP25-OV

3.0" I.D. inlet ... TIP30-OV

$ 208.00 /set

$ 218.00 /set

RECTANGLE Polished Exhaust Tips (Dodge)

304SS, Slip-on style, inlet notched for clamping, 1.75 x 4.25 x 11.5" overall length, single wall, angled-cut, includes band clamps and rivets to firmly hold tips in place.

2.5" I.D. inlet ... TIP25-RE

3.0" I.D. inlet ... TIP30-RE

$ 208.00 /set

$ 218.00 /set

ROUND Polished Exhaust Tips

304SS, Slip-on style, inlet notched for clamping, 3.0" body x 14.0" overall length, single wall, angled-cut, includes band clamps and rivets to firmly hold tips in place.

2.5" I.D. inlet ... TIP25-RO

3.0" I.D. inlet ... TIP30-RO

$ 177.00 /set

$ 185.00 /set

TURNDOWN Aluminized Tips

Made of 16 gauge aluminized tubing (same material & gauge as the exhaust system), mandrel bent, slip-on clamp style, inlet-end notched for clamping. Includes band clamps.

2.5" I.D. inlet ... TIP25-TDT

3.0" I.D. inlet ... TIP30-TDT

$ 46.95 /set

$ 52.95 /set

SLIP-CONNECTORS (aka Tube Length Extenders)

9.0" long slip-connectors add additional tube length between the mid-pipe and the muffler inlet when running mufflers shorter than the exhaust system was designed for. Cutting may be required for desired length. Includes U-bolt clamps. (I.D. inlet x O.D. outlet)

2.5" I.D. inlet ... SC25

3.0" I.D. inlet ... SC30

$ 20.60 /set

$ 23.64 /set

HEADER ADAPTER KITS (Kits for long tube headers)

Kits include (2) 6" long 3-bolt flanged reducer adapters, (2) 90-degree aluminized bends, (2) 3-bolt gaskets, 6-pc hardware set, and fabrication instructions. See fabrication instruction sheet #90

Header Collector Size	Exhaust System Size	Part No.	Price
3.0"	2.5" O.D.	AD-302590	$ 87.55
3.0"	3.0" O.D.	AD-303090	$ 92.70
3.5"	2.5" O.D.	AD-352590	$ 100.95
3.5"	3.0" O.D.	AD-353090	$ 106.10
4.0"	3.0" O.D.	AD-403090	$ 116.40

Discounted Price

when purchased with exhaust system

$ 53.00 /set

SHORTY HEADER ADAPTER KIT (Kit for Schumacher shorty headers)

Kits include (4) 90-degree aluminized bends, (2) 2.5" 2-bolt flanges, 4-pc hardware set, and fabrication instructions. See fabrication instruction sheet #91

Header Collector Size	Exhaust System Size	Part No.	Price
2.5"	2.5" O.D.	AD-SC25X90	$ 91.70

Discounted Price

when purchased with exhaust system

$ 53.00 /set

COATING OPTIONS


	SPECIAL-ORDER COATING OPTIONS (Coating Options) Exterior ceramic coating is typically for appearance purpose only, while the thermal barrier coating inside the tubes will add longevity to the life of the exhaust system. A non-refundable deposit is required to start all "Special-Orders". (Lead-time: 3-5 weeks)

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Updated: February 05, 2024

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