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Flowmaster 70 Series Big Block II Reviews, Ratings, Specs & Prices
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Flowmaster 70 Series Big Block II

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Rating:

Product Information

MSRP: $90,000.00
Average Price: $18,118.00
Manufacturer: Flowmaster
Recommended?
Yes: 5 / No: 0

The 70 Series "Big Block II" uses a large case for increased volume and added sound reduction that will still fit many applications that our 50 series "Big Block/HD" muffler won't fit. It utilizes Flowmaster's patented "Delta Flow" technology for maximum efficiency and reduction of interior resonance. Use on high performance street cars, trucks, SUV's, RVs and tow vehicles. Constructed of 16 gauge aluminized steel and fully mig-welded for maximum durability.

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DKARM
Registered User
DKARM's Reviews

01-19-2014, 11:40 AM
Price: $130.00
Pros: Nice classy rumble down low, good low end torque (when combined with Kolak exhaust), very little to no drone
Cons: None unless you don't want a quiet muffler.
Recommended? Yes

Comments: I really like this muffler. I got it with my 3" Kolak exhaust for my 5.9. I love the deep sound. It was much quieter than the Thrush I had on before and while it took some getting used to, I really like it. It sounds especially awesome at idle. My Jeep now sounds more like a muscley SUV and less like a screaming loud 68 Camaro. If you're looking for a deep sounding muffler that's not too loud, this is a great option. I could tolerate it being a little louder but once I upgrade my intake and put on headers it'll be perfect.

I got this muffler with Kolak's kit but 130 seems to be a good price for it by itself.


CoolGuyDave
Registered User
CoolGuyDave's Reviews
12-28-2010, 01:49 PM
Price: $130.00
Pros: very mellow sound. sounds stock at idle
Cons: drones a bit around town
Recommended? Yes

Comments: not a bad muffler for a DD. drones a bit but you cant hear it if you have the heater or radio on.


GibsJeep
Registered User
GibsJeep's Reviews

05-11-2008, 03:55 AM
Flowmaster 70 Series Big Block II
Price: $90,000.00
Recommended? Yes

Comments: A nice tame rumble to it and its not over baring at all. Also, no interior drone.


00xj54

Registered User
00xj54's Reviews

08-03-2006, 04:19 PM
Flowmaster 70 Series Big Block II
Price: $200.00
Recommended? Yes

Comments: I have this Flowmaster on XJs 4.0. It sounds great. It's got a nice low rumble that sounds like a v8. It's not overhelmingly loud and doesn't sound the least pit ricey.



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