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Old 04-01-2009, 09:58 PM   #1 (permalink)
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stacks

im looking into doing stacks on my truck, just wondering what the average cost is, how hard is the install and what i need to worry about, also worked about when it rains and getting water in the exhaust. does anyone have a sound clip on stacks on a stock truck?? and about how much space is killed in the bed....thanks
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Old 04-01-2009, 11:21 PM   #2 (permalink)
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stacks are simple to put in, my setup (5" to 6" stacks) was 350 bucks from a local big rig shop, then each stack was about 150.

install is simple, cut an oval in the bed where the y is going to sit, clamp everything to the bed, put the stacks on and clamp them to the sides of the bed. you'll lose about a foot, and putting a toneau on in the future becomes tricky.

my egts dropped about 200 with daily driving...mine's also straight piped off the turbo.

i don't have a sound clip...but if i did it may blow everyones speakers up!
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Old 04-01-2009, 11:37 PM   #3 (permalink)
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How much space do you loose
Depends how close to the bed you mount them, I have 6" Grand Rocks, and I only lost 6" however all together I probably lost 2' cause of my toolbox. Install was easy, you drill a 5 1/2" hole in the bed to mount or if you wanna go lower, you drill an oval as stated above and then the cross tube will sit flush to the bed. Hope this helps, look on you tube there are tons of stack videos.
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Old 04-02-2009, 02:50 AM   #4 (permalink)
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what abou as far as rain getting into the stack, also how was the performance/ mileage increase??

as far as aftermarket stacks since i dont know of any shops around here plus i want to do the install myself, what brands do you recomend and what size piping for a stock truck,
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Old 04-02-2009, 03:11 AM   #5 (permalink)
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Well I have 5" TBE to 6" Grand Rock stacks, that was my first upgrade but not for long I would reccomend that, it sounds great and look killer, everyone either goes with 5", 6", 8" I think 5" is to small and 8" is to big, unless its a dually. I have the Aero turbine 5050Xl muffler which has a built in resonator, keeps things very quiet at highway speeds, but still has a nice throaty groan.

Heres what the Aero turbine sounds like

YouTube - Aero Exhaust Diesel Performance Muffler

And as far as Rain getting in the stack, some people drill holes in the bends to let the water seep out, personally I just put sandwich bags over them when i know its gonna rain, or if its raining and iam driving, i just leave it and no probs so far. You can get stack kits at two of the places in my sig.

and heres how to install stacks, anymore questions hit me up.

YouTube - Grand Rock Exhaust Stacks: Chrome Truck Exhaust Stacks
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Old 04-02-2009, 03:25 AM   #6 (permalink)
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I have 6" Aussies, currently in Lafayette, La with plenty of rain, and so far don't have any soot blown onto my truck. As for the performance/mileage increase, I can't tell you yet. I do hand calculate my mileage on every tank, but I have only had them on for a couple of months, and I'm still having too much fun romping on it all of the time to get some serious numbers. So far it is a 2mpg loss, but I'm sure most of that is from having fun. I won't know for sure until I can run a few tanks without playing.
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Old 04-02-2009, 03:36 AM   #7 (permalink)
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I found my 6"X46" stacks, adapters, and Peterbuilt style clamps on eBay, then called Gus at Farmboy's for the 4" turbo back to 5" Grand Rock bed kit (approx. $750 total). I custom made the diamond plate heat shield for $150. I lost a total of 8" of bed space, and the heat shields stay cool to the touch at normal driving.
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Old 04-02-2009, 03:38 AM   #8 (permalink)
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I have 6" Aussies, currently in Lafayette, La with plenty of rain, and so far don't have any soot blown onto my truck. As for the performance/mileage increase, I can't tell you yet. I do hand calculate my mileage on every tank, but I have only had them on for a couple of months, and I'm still having too much fun romping on it all of the time to get some serious numbers. So far it is a 2mpg loss, but I'm sure most of that is from having fun. I won't know for sure until I can run a few tanks without playing.
lol i dont think you will ever be done playing... ive had stacks for over three years and still love getting on it and letting off to hear the turbo spool down
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Old 04-02-2009, 10:49 AM   #9 (permalink)
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thats another question i had is heat, do i have to remove my bedliner? is it gonna be to hot n melt it?

sorry for all the questions i just dont wanna have to spend the money an fix mistakes later
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Old 04-02-2009, 10:55 AM   #10 (permalink)
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thats another question i had is heat, do i have to remove my bedliner? is it gonna be to hot n melt it?

sorry for all the questions i just dont wanna have to spend the money an fix mistakes later
I just cut out parts of my bedliner but I only have a single stack.
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Old 04-02-2009, 02:33 PM   #11 (permalink)
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I have a spray in bedliner, and it has not done anydamage, as far as a drop in, i have heard of people putting them in and not having melting issues, but if you are concerned, just cut 1/2" around the stack and youll be good.
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Old 04-02-2009, 02:48 PM   #12 (permalink)
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what abou as far as rain getting into the stack, also how was the performance/ mileage increase??

as far as aftermarket stacks since i dont know of any shops around here plus i want to do the install myself, what brands do you recomend and what size piping for a stock truck,


I really didn't see any performance or milage gain, unless you count the kickazz sound as a performance gain.

I spent a total of $450 on ebay on my set, Grandrock has the best stacks and I got the silverline T pipe kit because it has a baffle in the T part to split the smoke evenly between the two stacks.
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