glasspacks?

[camoford4x4]

alright. im 16, and im from texas, so i like 4x4 fords and loud exhaust. but im also not stupid ha. i want to buy a glasspack to make my expy louder, howerver i dont want to make my truck run crappy, ive heard both that it will increase performance and that it will harm your engine without tuning, i dont care if i gain any power or not, i just dont want to lose any lol, thanks for the help!

 

[alaskanexpy]

i've got a 25" cherry bomb on my '98 5.4 you dont need a tune to change the muffler, hell you dont even need a muffler. its pretty mellow to me, but my other truck is a V10 with no muffler so thats not saying much.

5.4 expedition with 25" glass pack - YouTube

 

[camoford4x4]

i know how to weld, but i dont have a welder any more is it possible to clamp it on? and your truck sounds good by the way!

 

[Stoned06]

That sounds good alaskan!

 

[ydopen]

Flowmaster Race muffler here, Im guessing its a 40 series? with 5in inlet/outlet with no pipe after the muffler, sounds pretty dang good to me, Best thing to do is go by your local muffler shop and see what they have used on the shelf, flowmaster,glasspack etc, My buddy had a shop and people came in alot that had just bought a car used with mufflers and swapped them for stock.

 

[Thermo]

camo, this is what I will tell you: An open exhaust can net you more power, but it can hurt your low end torque. The wider you make it, the louder it will tend to be and normally result in better high RPM power, but it will also hurt your torque at the low RPM since there will be no back pressure on the cylinders.

So, I ask you, do you spend more time at 1500 RPM or at 5,000 RPM? You run a really free exhaust and you can plan on your city mileage dropping into the single digits easy. Highway may improve by about 1 mpg (maybe). For most people, they see an overall loss of mileage. So, now, is the loud sound more important that mileage. that is only an answer you can make.

As for installing the muffler, yes, you can clamp it in place, just have to make sure that the clamps are tight and you get plenty of overlap between the two pipes. You get that and you should be golden.

 

[camoford4x4]

what about thrush turbo mufflers? how much tourqe would i lose with the glasspacks?

 

[Thermo]

It is really difficult to say what power you will gain/loose with any modification. Too many variables to deal with.

 

[FordandPolaris]

I frequently tow things with my truck, and i did not notice a big difference with low end torque. Especially if you use the stock tailpipe. I have a 26" Cherrybomb glasspack on the truck.