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Flowmaster 70 Series Big Block II Mufflers

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  • List Price:
    $187.64 - $193.45
  • Our Price:
    $144.99 - $149.48
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(31 Reviews)
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    Features

    Description

    Maximum flow volume, maximum efficiency, maximum power. The Flowmaster 70 Series Big Block II Muffler does it all for your big, bad truck, SUV, RV or other towing vehicle. With its massive chamber, the Flowmaster 70 Series handles the output of huge working engines at their highest load, boosting torque right when you need it.

    The Flowmaster 70 Series Muffler also uses exclusive Delta Flow technology for the least possible interior resonance, thanks to precision deflectors in the chamber. These exact parts also aide exhaust gas scavenging for scraping together the most power and torque possible.

    The 70 Series Big Block II Muffler boasts the quality construction you'd expect from Flowmaster. Each Flowmaster Muffler is built with 16-gauge aluminized steel for corrosion resistance and fully mig-welded for maximum durability. Best yet, your Flowmaster 70 Series Big Block II Muffler boasts a 3-year warranty.

    Notes

    Flowmaster 70 Series Big Block II Mufflers Customer Reviews

    Average Rating

    31 Customer Reviews

    Great Mufflers

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    Reviewed by Nicole L (Ramah, CO) Reviewed for a 2002 Chevy Silverado — Saturday at 8:37 AM

    We had to get these for our big truck cause we just got a 5th wheel and the 50 series were too loud on the truck. We think these are much quieter.

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    Just what I wanted

    1 of 1 people found the following review helpful.
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    Reviewed by joo y c (HACKENSACK, NJ) Reviewed for a 2002 Honda Odyssey — Jul 11, 2013 4:15 AM

    Almost stock sound, but gives you that flowmaster growl when you step down on the gas. Yje only down side is that it is really heavy, 40lbs. Other than that I'll give it 5 stars.

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    Flowmaster 70 Series Big Block II Muffler gas mileage increase

    0 of 1 people found the following review helpful.
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    Reviewed by Jamie E (yucaipa, CA) Reviewed for a 2004 Chevy Tahoe — Mar 21, 2013 9:52 PM

    I had the Flowmaster 70 Series Big Block II Muffler put on my 2004 Chevy Tahoe in hopes of better gas mileage. After two tanks of gas I am presently totally disappointed. My mileage went from 17mpg to 13mpg. Presently I would not recommend this product to anyone.

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    Just the right sound! Not too loud; not too quite.

    3 of 3 people found the following review helpful.
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    Reviewed by Gregg M (Mt Airy, NC) Reviewed for a 1998 Toyota 4Runner — Feb 07, 2013 8:05 PM

    The perfect size to replace the original muffler. The installation required some minor modifications just as noted in the product description. The 2.5 inch diameter is about an 1/8th of an inch too big for the stock exhaust pipe; but I resolved by cutting slits along the length of the the inlet and outlet pipes. This allowed the clamps to compress around the smaller exhaust pipe. Also had my mechanic weld the joints after installation. Very happy with the overall experience!

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    05 4runner/nice

    2 of 3 people found the following review helpful.
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    Reviewed by mw d (Las Vegas, NV) Reviewed for a 2005 Toyota 4Runner — Feb 28, 2012 6:52 AM

    On the recommendation of my muffler guy went with super 70,had a delta 50 on my tacoma too ricey w/o resonator hence the 70, nice & throaty but doesn't overpower ya on the road , you know its there but kinda sounds like v8 suv !

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    Flowmaster 70 Series Big Block II Muffler

    4 of 4 people found the following review helpful.
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    Reviewed by Ron B (Stephenson, MI) Reviewed for a 2000 Chevy C/K 2500 — Jan 25, 2012 7:03 PM

    Great sounding performance muffler that isn't too loud ! Just the right amount of bark.

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    2010 Ford F150 SuperCrew

    1 of 1 people found the following review helpful.
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    Reviewed by Michael B (Allen, TX) Reviewed for a 2010 Ford F-150 — Aug 22, 2011 9:46 PM

    Sounds just right for me. Not too much rumble, just enough. You can hear it on the highway. I wouldn't recommend it if you go long distances. I had it installed for $60.00.

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    great product

    1 of 2 people found the following review helpful.
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    Reviewed by Jarek H (Knoxville, TN) Reviewed for a 2001 GMC C/K 1500 — May 02, 2011 5:06 PM

    very happy with my purchese

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    94 Winnebago

    2 of 3 people found the following review helpful.
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    Quality

    Reviewed by Richard D (Campbellsport, WI) — Nov 16, 2010 5:24 AM

    love the power we gained.

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    Nice Rumble

    3 of 3 people found the following review helpful.
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    Reviewed by Antonio H (Orlando, FL) Reviewed for a 1997 Dodge Ram — Oct 12, 2010 9:42 PM

    Had my FlowMaster installed together with my Borla Chrome intercooled tip I purchased from autoanything for $45 bucks at a local shop. Looks and sounds great on my 1997 Dodge Ram. Feels like my engine is breathing better.Has a nice rumble but not loud or overbearing-just right.

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