View Poll Results: glasspacks or flowmaster?
glasspacks
18
47.37%
flowmaster
20
52.63%
Voters: 38. You may not vote on this poll
glasspacks or flowmaster?
Senior User
Joined: May 2004
Posts: 278
Likes: 0
I wasn't trying to say that Flowmasters were the best thing out there.
I just like the construction quality that is put into them.
Here is a decent flow test to look at http://www.broaderperformance.com/mu...flow_tests.htm
Most glasspacks do cause too much turbulence.
Truck motors usually run best with some back pressure in the exhaust to help with low end power.
So you need to look at what size exhaust you will be running on the truck and what your final plans for the motor are.
If I was building a 400 with just a mild cam, aluminum intake with a 600 cfm carb and headers, I would probably go with 2 1/4 duals with decent flowing mufflers. I think 2 1/2 in dual exhaust would be overkill and you would loose low end power.
I never did a fuel economy comparison on the truck that I had both mufflers on because it was a Dodge 4X4 with 1 ton axles and large tires so I wasn't too concerned about the mileage
Good luck.
Ken
I just like the construction quality that is put into them.
Here is a decent flow test to look at http://www.broaderperformance.com/mu...flow_tests.htm
Most glasspacks do cause too much turbulence.
Truck motors usually run best with some back pressure in the exhaust to help with low end power.
So you need to look at what size exhaust you will be running on the truck and what your final plans for the motor are.
If I was building a 400 with just a mild cam, aluminum intake with a 600 cfm carb and headers, I would probably go with 2 1/4 duals with decent flowing mufflers. I think 2 1/2 in dual exhaust would be overkill and you would loose low end power.
I never did a fuel economy comparison on the truck that I had both mufflers on because it was a Dodge 4X4 with 1 ton axles and large tires so I wasn't too concerned about the mileage
Good luck.
Ken
Thread Starter
|
Senior User
Joined: Mar 2006
Posts: 166
Likes: 0
Originally Posted by jowilker
What about Turbos?? Headers are gonna make it louder. 18" long 3" tips on the end of the pipes help with mellow tone as well. Small pipes make a lot of higher pitched rap.
It is more than just mufflers. IMHO
John
It is more than just mufflers. IMHO
John
!["Beemer Nut"'s Avatar](data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 50 50'><circle class='avatar-circle-default' fill='%23bc5285' cx='25px' cy='25px' r='20px'></circle><text class='avatar-text-default' x='49%' y='53%' fill='white' text-anchor='middle' alignment-baseline='middle'>"</text></svg>)
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
I went from 3" to 4 1/2" on a 12" long cone to 19" long 4 1/2" tips, "drone city" as well car and cop alarms go off and this isn't when nailing it. Deep tone? in a parking garage yup it chatters peoples ear drums when near as I get dirty looks until I wrap it in neutral then the dagger eyed looks. Between 14 and 1,700 is the drone zone at cruise in town with a 2 1/2" system on a FE.
.....=o&o>.....
.....=o&o>.....
Last edited by jowilker; Mar 28, 2006 at 04:44 AM.
Posting Guru
Joined: Nov 2005
Posts: 1,302
Likes: 0
From: Madison, SD
glasspacks are just loud. I use the old turbo style mufflers, the Flowmaters are probably a bit better for performance though you'd probably have to have it on a chassis dyno to see the difference. Not sure the extra cost of the flowmasters is worth it......
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
My muffler shop friends business installs app60% Flowmasters on brand new SUV's and trucks, some with less than 100 miles. It's the look of duals and the sound not performance as the muffler is single in dual out. Magnaflows flow and sound better but then his bread and butter is Flowmasters. He has a 69 Chevy shop truck as an example for customers with Flowmasters but he runs Magnaflows on his personal vehicles. Take a look at Spintech mufflers.
....=o&o>.....
....=o&o>.....
Postmaster
Joined: Nov 2003
Posts: 3,568
Likes: 1
From: Middleton, ID
Not sure the extra cost of the flowmasters is worth it......
Buying from the muffler shop will cost probably $60 ( at least) plus the labor.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
I cash and carry as I built my own custom exhaust systems, no hash monkey welding on my truck.
Be careful as there are knock off Flowmasters out there that crack at the ends where the cone connects to the end cap. I see this alot at the muffler shop and the customers swear their mufflers are original Flows until they see side by side with a real Flowmaster. The look on their face as they have been had at another muffler shop, a easy $50 ripoff profit per muffler. Made in Mexico? I have installed used Flows from the muffler shop for testing, no thank you. I had Edlebrock's RPM (life time) series but the drome was killer then was given Spintech's for test (different muffler shop but friends with first shop) that reduced drone so I went back and purchased them. Cool to have people loan mufflers for testing.
.....=o&o>.....
Be careful as there are knock off Flowmasters out there that crack at the ends where the cone connects to the end cap. I see this alot at the muffler shop and the customers swear their mufflers are original Flows until they see side by side with a real Flowmaster. The look on their face as they have been had at another muffler shop, a easy $50 ripoff profit per muffler. Made in Mexico? I have installed used Flows from the muffler shop for testing, no thank you. I had Edlebrock's RPM (life time) series but the drome was killer then was given Spintech's for test (different muffler shop but friends with first shop) that reduced drone so I went back and purchased them. Cool to have people loan mufflers for testing.
.....=o&o>.....
Thread Starter
|
Senior User
Joined: Mar 2006
Posts: 166
Likes: 0
I'm not so sure the FM's are worth the extra price, I went down to Advance auto and they have a setup where you can listen to the mufflers and see if you like the way they sound b4 you buy them, the dynomax thrush turbos almost sound like fm's...and they are only 19.99 apeice.....thats alot better than the 300.00 they want to run dual flows on my truck.....
Thread Starter
|
Senior User
Joined: Mar 2006
Posts: 166
Likes: 0
I gues they would be perforated tubes?? here's a pic of the internals...
http://store.summitracing.com/default.asp?Ntt=wlk17711&searchinresults=false&Ntk =KeywordSearch&DDS=1&N=115&target=egnsearch.asp&x= 29&y=15
or go to summitracing.com and type in wlk17711 for the part number
sorry it dont take you to the page I thought it would, if you click on the 2nd link something about dynomax thrush turbos, it shows the internals...it has 3 tubes with holes in them...
http://store.summitracing.com/default.asp?Ntt=wlk17711&searchinresults=false&Ntk =KeywordSearch&DDS=1&N=115&target=egnsearch.asp&x= 29&y=15
or go to summitracing.com and type in wlk17711 for the part number
sorry it dont take you to the page I thought it would, if you click on the 2nd link something about dynomax thrush turbos, it shows the internals...it has 3 tubes with holes in them...
Last edited by 1972FordCustom; Mar 27, 2006 at 01:40 PM.
Post Fiend
Joined: Dec 2003
Posts: 6,658
Likes: 4
From: "Islander"
The knockoffs have no markings or stamped Flowmaster letters and they are a lighter gauge material. I can't (or know how) to post photos on the exhaust I built, (34 pieces). Get me at, mirror. ten.tenademalajcs09R I'll email back a few photos. Carl.....=o&o>.....
Postmaster
Joined: Nov 2003
Posts: 3,568
Likes: 1
From: Middleton, ID
Those thrush mufflers look like they'd be alright no glass to burn out (from what I can see anyway).
That's one reason I watch when somebody at a shop does anything with my rigs, oil changes included, so I can make sure they're not short changing me.
The knockoffs have no markings or stamped
Last edited by 1970Custom; Mar 27, 2006 at 05:13 PM.