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Flowmaster

Flowmaster 70 Series Big Block II Mufflers

Flowmaster 70 Series Big Block II
$144.99 - $149.48

Browse Flowmaster 70 Series Big Block II Mufflers, select your vehicle, or narrow your search

Flowmaster 524703 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Cab Style And Bed Style Crew Cab w/67.1 in./5 ft. 7.1 in. Bed
Inlet Position Front
Inlet Size (In.) 2.25
Inlet Type Dual Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Center Outlet
Outlet Position Center
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1996-1999 CHEVROLET C1500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1996-1998 CHEVROLET C1500 SUBURBAN 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1996-1999 CHEVROLET C2500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1996-1999 CHEVROLET C2500 PICKUP 5.7L / 350 C.I.D.-7.4L / 454 C.I.D.
1996-1999 CHEVROLET K1500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
All Vehicle Applications »
Flowmaster 53072 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Center
Inlet Size (In.) 3
Inlet Type Single Center Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Offset Outlet
Outlet Position Offset
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
2007-2010 CHEVROLET AVALANCHE LS 5.3L / 325 C.I.D.-5.3L / 325 C.I.D.
2007-2009 CHEVROLET AVALANCHE LS 5.3L / 325 C.I.D.-5.3L / 325 C.I.D.
2007-2010 CHEVROLET AVALANCHE LT 5.3L / 325 C.I.D.-5.3L / 325 C.I.D.
2007-2009 CHEVROLET AVALANCHE LT 5.3L / 325 C.I.D.-5.3L / 325 C.I.D.
2007-2010 CHEVROLET AVALANCHE LTZ 5.3L / 325 C.I.D.-5.3L / 325 C.I.D.
All Vehicle Applications »
Flowmaster 524704 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Center
Inlet Size (In.) 2.25
Inlet Type Single Center Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Center Outlet
Outlet Position Center
Outlet Size (In.) 2.25
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Flowmaster 530722 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Center
Inlet Size (In.) 3
Inlet Type Single Center Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Dual Outlet
Outlet Position Rear
Outlet Size (In.) 2.25
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Flowmaster 53070 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Center
Inlet Size (In.) 3
Inlet Type Single Center Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Center Outlet
Outlet Position Center
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1992-1995 CHEVROLET C1500 SUBURBAN 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1999-2005 FORD F-250 SUPER DUTY PICKUP 6.0L / 363 C.I.D.-7.3L / 445 C.I.D.
2006-2007 FORD F-250 SUPER DUTY PICKUP HARLEY-DAVIDSON EDITION 6.0L / 363 C.I.D.-6.0L / 363 C.I.D.
2006-2007 FORD F-250 SUPER DUTY PICKUP KING RANCH 6.0L / 363 C.I.D.-6.0L / 363 C.I.D.
2006-2007 FORD F-250 SUPER DUTY PICKUP LARIAT 6.0L / 363 C.I.D.-6.0L / 363 C.I.D.
All Vehicle Applications »
Flowmaster 53073 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Offset
Inlet Size (In.) 3
Inlet Type Single Offset Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Offset Outlet
Outlet Position Offset
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1992-1994 CHEVROLET BLAZER 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1991-1999 CHEVROLET C1500 PICKUP 5.0L / 305 C.I.D.-7.4L / 454 C.I.D.
1995-2000 CHEVROLET C2500 PICKUP 6.5L / 395 C.I.D.-6.5L / 395 C.I.D.
1991-1995 CHEVROLET C2500 PICKUP 7.4L / 454 C.I.D.-7.4L / 454 C.I.D.
1995-2000 CHEVROLET C3500 PICKUP 6.5L / 395 C.I.D.-6.5L / 395 C.I.D.
All Vehicle Applications »
Flowmaster 530702 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Center
Inlet Size (In.) 3
Inlet Type Single Center Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Dual Outlet
Outlet Position Rear
Outlet Size (In.) 2.5
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1990-1993 CHEVROLET C1500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1992-1992 CHEVROLET C2500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1988-1992 CHEVROLET C2500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1989-1993 CHEVROLET K1500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1992-1992 CHEVROLET K2500 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
All Vehicle Applications »
Flowmaster 853073 70 Series Big Block II Muffler 3 in. Offset Inlet/Opposite Si

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Offset
Inlet Size (In.) 3
Inlet Type Single Offset Inlet
Length (In.) 28
Material 409 Stainless Steel
Outlet Single Diagonal Offset Outlet
Outlet Position Offset
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$149.48

in stock
Qty
Year Make Model Submodel Engine
1992-1994 CHEVROLET BLAZER 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
2002-2002 CHEVROLET C3500 PICKUP HD CHASSIS CAB 6.5L / 395 C.I.D.-6.5L / 395 C.I.D.
1996-1999 CHEVROLET K1500 PICKUP 5.0L / 305 C.I.D.-5.0L / 305 C.I.D.
2002-2005 CHEVROLET SILVERADO 2500 HD 6.6L / 400 C.I.D.-6.6L / 400 C.I.D.
2006-2006 CHEVROLET SILVERADO 2500 HD LS 6.6L / 400 C.I.D.-6.6L / 400 C.I.D.
All Vehicle Applications »
Flowmaster 53071 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Offset
Inlet Size (In.) 3
Inlet Type Single Offset Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Center Outlet
Outlet Position Center
Outlet Size (In.) 3
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1987-1991 CHEVROLET BLAZER 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1987-1988 CHEVROLET R10 SUBURBAN 5.0L / 305 C.I.D.-5.7L / 350 C.I.D.
1989-1990 CHEVROLET R1500 SUBURBAN 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1987-1988 CHEVROLET R20 SUBURBAN 5.7L / 350 C.I.D.-7.4L / 454 C.I.D.
1994-1996 DODGE RAM 2500 PICKUP 5.9L / 359 C.I.D.-5.9L / 359 C.I.D.
All Vehicle Applications »
Flowmaster 52573 70 Series Big Block II Muffler

Body Height (In.) 5
Body Length (In.) 22
Body Width (In.) 10
Inlet Position Offset
Inlet Size (In.) 2.5
Inlet Type Single Offset Inlet
Length (In.) 28
Material Aluminized Steel
Outlet Single Offset Outlet
Outlet Position Offset
Outlet Size (In.) 2.5
Position N/A
Shape Oval
shipping
FREE
your price
$144.99

in stock
Qty
Year Make Model Submodel Engine
1982-1986 CHEVROLET BLAZER K5 5.0L / 305 C.I.D.-5.7L / 350 C.I.D.
1975-1980 CHEVROLET C10 PICKUP 4.1L / 250 C.I.D.-7.4L / 454 C.I.D.
1978-1980 CHEVROLET C10 PICKUP 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
1978-1980 CHEVROLET C10 PICKUP BIG TEN 4.1L / 250 C.I.D.-7.4L / 454 C.I.D.
1978-1979 CHEVROLET C10 PICKUP BIG TEN 5.7L / 350 C.I.D.-5.7L / 350 C.I.D.
All Vehicle Applications »

70 Series Big Block II Mufflers:

It’s fun to make noise on the drag strip.  It’s fun to let your big, intrusive V8 roar out when you’re cruising around on a summer evening.  That steady noise is nothing less than a gauge of its own when you’re on the track.  But what about when you’re towing a trailer on the highway for six hours?  There it could get old fast.

That’s where the Flowmaster 70 Series Big Block II muffler comes in.  It’s specifically designed, using an extra long case, to cut interior noise without hampering the performance you expect from a Flowmaster exhaust.  Why, yes.  I did mention performance.  The 70 Series Big Block II intended to improve engine efficiency, which means more response from under the hood, and higher MPGs.  Perfect for that six-hour tow.