Duramax Diesels Forum Truck of the Week
  #1  
Old 01-08-2013, 01:11 PM
Robby Avery's Avatar
Robby Avery Robby Avery is offline
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Default LB7 Intake Horn Q's

I'm currently trying to figure out weither to upgrade my intake horn or keep the stock one I ported out myself on my 02? I've done some searching to find that most all the ava horns are 3.5in which sounds good but then I hear that they have clearence issues with the wire loom so that kinda shys me away. I've ported my stock horn out myself with a burring bit and then polished it to almost mirror like finish stock was 2.413xxin and I took it out to 3.0 I.D. pretty much perfectly round and smooth as silk. Took me awhile because of how picky I was with it. What I'm curious to know is will 1/2in make that much of a difference? Is a 1/2in, a little more whistle, and the chance the thing will hack up my wire loom really worth 100.00+ bucks. Please enlighten me before I make a costly mistake if it is one?
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2006 Chevy 2500HD LBZ Duramax Summit White CCSB Tan (neutral) leather LT3 pkg w/sunroof OEM bra 4x4, ISSPRO EV, ATS Twin CP3's, Built Allison, Eaton E-locker front stock G80 rear, Kennedy Twin pump filter combo kit, Snow Perf Stage 2 w/m injection, 4in to 5in banks tip, HM Big K&N, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Rancho RS9000XL, Fabtech HD TR, Cognito P&I Brace kit, DD/Puller/Work Truck



2002 Chevy 2500HD LB7 Duramax Summit White CCSB Grey (neutral) leather LT3 pkg OEM bra 4x4, Kennedy Twin Pump Filter Combo Kit, ISSPRO EV, PPE Boost Valve, DTS Built Allison, MikeL Cooler, ATS Billet Flexplate, DTS 3in DS IC pipe, Bill's 5in CAI (White), Big K&N, 4in to 7in black stack, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Cognito P&I Brace kit, Sleeves, Energy Sway bar Kit, DD/Puller/Work truck



Special Thanks: (David) DTS, (Guy) Socal Diesel, (Nick & crew) DuramaxTuner, (Dan) PPE, (John) Kennedy Diesel, (Tony) All Season
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  #2  
Old 01-08-2013, 01:19 PM
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Default

I didn't have any clearance issues when I did mine.

It think it is a very well worth and cheap mod.
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  #3  
Old 01-08-2013, 01:38 PM
Robby Avery's Avatar
Robby Avery Robby Avery is offline
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What horn did you use? They all look the same so I figured they all fit the same
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2006 Chevy 2500HD LBZ Duramax Summit White CCSB Tan (neutral) leather LT3 pkg w/sunroof OEM bra 4x4, ISSPRO EV, ATS Twin CP3's, Built Allison, Eaton E-locker front stock G80 rear, Kennedy Twin pump filter combo kit, Snow Perf Stage 2 w/m injection, 4in to 5in banks tip, HM Big K&N, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Rancho RS9000XL, Fabtech HD TR, Cognito P&I Brace kit, DD/Puller/Work Truck



2002 Chevy 2500HD LB7 Duramax Summit White CCSB Grey (neutral) leather LT3 pkg OEM bra 4x4, Kennedy Twin Pump Filter Combo Kit, ISSPRO EV, PPE Boost Valve, DTS Built Allison, MikeL Cooler, ATS Billet Flexplate, DTS 3in DS IC pipe, Bill's 5in CAI (White), Big K&N, 4in to 7in black stack, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Cognito P&I Brace kit, Sleeves, Energy Sway bar Kit, DD/Puller/Work truck



Special Thanks: (David) DTS, (Guy) Socal Diesel, (Nick & crew) DuramaxTuner, (Dan) PPE, (John) Kennedy Diesel, (Tony) All Season
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Old 01-08-2013, 01:47 PM
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blk smoke lb7 blk smoke lb7 is offline
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They are all very close if not identical you can't hone out the stocker as large as you.can the supermarket 1 and you can get close to what you pay for them most of the time if you decide to go to larger turbo in the future.
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04 LB7 CC/SB EFI live, S366,S483 , Born again 08/10/2011 11.64@117
Some wicked tuning by Bo-Bo (Bob olson) Thx Bob

Quote:
Originally Posted by flyinelvis11
i'll let you use anything i got except my wife and my truck; it's too easy to throw a rod in either one):h
Quote: Carter 44
Boost is like a hot girl with an STD...you know you want to hit it but your afraid of the consequences
rollncoal07:Twining is wining
Quote:
Originally Posted by McRat View Post

You come off as a Timeshare Condo salesman on this site.

If you were helping folk with problems, or asking for input on your problems, it might be different, but from where I see, you are only a little different than the Russian spammers selling iPads that we delete.

Act like more of a human, and less like a spambot, and you'd probably catch less heat. This is "family", and it's our corner bar, and a group of guys with grease all over them leaning over fenders of somebodies truck that ain't making the right boost.

It's also one of few sites with more hardcore wrenches and racers than wannabees.

You're welcome to be a member here, and post about your build, but don't expect people to shower you with roses yet. That comes with seat time on the site, and on the track.
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Old 01-08-2013, 01:54 PM
Chevy1925's Avatar
Chevy1925 Chevy1925 is online now
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i dont think its worth the money to ditch the honed out one you have now for a .5" bigger one.
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02 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

driving a turboed Samurai now
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Old 01-08-2013, 02:02 PM
blk smoke lb7's Avatar
blk smoke lb7 blk smoke lb7 is offline
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Quote:
Originally Posted by Chevy1925 View Post
i dont think its worth the money to ditch the honed out one you have now for a .5" bigger one.
James is probably right.I know that airhorn Ifis a choke point on the lb7s so something has to to be done,if your already ported maybe stick with that its just hard to keep the same size all the way thru the horn.If you found a.good deal on a used 1 id jump on it otherwise keep what you have from what you and pm'd about your going bigger on the turbo someday im sure of it.
__________________
04 LB7 CC/SB EFI live, S366,S483 , Born again 08/10/2011 11.64@117
Some wicked tuning by Bo-Bo (Bob olson) Thx Bob

Quote:
Originally Posted by flyinelvis11
i'll let you use anything i got except my wife and my truck; it's too easy to throw a rod in either one):h
Quote: Carter 44
Boost is like a hot girl with an STD...you know you want to hit it but your afraid of the consequences
rollncoal07:Twining is wining
Quote:
Originally Posted by McRat View Post

You come off as a Timeshare Condo salesman on this site.

If you were helping folk with problems, or asking for input on your problems, it might be different, but from where I see, you are only a little different than the Russian spammers selling iPads that we delete.

Act like more of a human, and less like a spambot, and you'd probably catch less heat. This is "family", and it's our corner bar, and a group of guys with grease all over them leaning over fenders of somebodies truck that ain't making the right boost.

It's also one of few sites with more hardcore wrenches and racers than wannabees.

You're welcome to be a member here, and post about your build, but don't expect people to shower you with roses yet. That comes with seat time on the site, and on the track.
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  #7  
Old 01-08-2013, 02:14 PM
jmaz268's Avatar
jmaz268 jmaz268 is offline
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Quote:
Originally Posted by Robby Avery View Post
What horn did you use? They all look the same so I figured they all fit the same
I had a profab one.
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  #8  
Old 01-08-2013, 02:26 PM
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Quote:
Originally Posted by blk smoke lb7 View Post
James is probably right.I know that airhorn Ifis a choke point on the lb7s so something has to to be done,if your already ported maybe stick with that its just hard to keep the same size all the way thru the horn.If you found a.good deal on a used 1 id jump on it otherwise keep what you have from what you and pm'd about your going bigger on the turbo someday im sure of it.
on a stocker turbo, i doubt you would ever see where its an issue after opening it up to 3". If you run a big bored out "stock" looking turbo like a DTS or Fleece or River City, it may be a different story.
__________________
James

02 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

driving a turboed Samurai now
Tailgate Crew Member #4
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  #9  
Old 01-08-2013, 02:48 PM
Robby Avery's Avatar
Robby Avery Robby Avery is offline
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Join Date: Jul 2008
Location: Norman Park, Georgia
Truck: 2006 Chevy Duramax
Engine: 403ci LBZ Diesel
Transmission: Automatic
Posts: 293

Default

100.00 for .5in kinda what I thought thanks for all the replies
__________________
2006 Chevy 2500HD LBZ Duramax Summit White CCSB Tan (neutral) leather LT3 pkg w/sunroof OEM bra 4x4, ISSPRO EV, ATS Twin CP3's, Built Allison, Eaton E-locker front stock G80 rear, Kennedy Twin pump filter combo kit, Snow Perf Stage 2 w/m injection, 4in to 5in banks tip, HM Big K&N, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Rancho RS9000XL, Fabtech HD TR, Cognito P&I Brace kit, DD/Puller/Work Truck



2002 Chevy 2500HD LB7 Duramax Summit White CCSB Grey (neutral) leather LT3 pkg OEM bra 4x4, Kennedy Twin Pump Filter Combo Kit, ISSPRO EV, PPE Boost Valve, DTS Built Allison, MikeL Cooler, ATS Billet Flexplate, DTS 3in DS IC pipe, Bill's 5in CAI (White), Big K&N, 4in to 7in black stack, Mickey Thompson Baja Claw TTC 315/75/16 on stock rims, Cognito P&I Brace kit, Sleeves, Energy Sway bar Kit, DD/Puller/Work truck



Special Thanks: (David) DTS, (Guy) Socal Diesel, (Nick & crew) DuramaxTuner, (Dan) PPE, (John) Kennedy Diesel, (Tony) All Season
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