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2 15s ported

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Old Mar 26, 2010 | 10:21 PM
  #1  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
2 15s ported

so i finally got my box done that fits behind the back seats and is ported for 2 15s it is 5.19 cu. ft and ported at 34 hz measurements don't account for the material but that is easy u will have to do some adjustments as i talored this to my car and some of the plastic is bent and the carpet is wrinkled so u could possible make it better
Attached Thumbnails 2 15s ported-0325001923.jpg   2 15s ported-0325001923a.jpg   2 15s ported-my-box.jpeg  

Last edited by 88birdttop; Mar 26, 2010 at 10:25 PM.
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Old Mar 26, 2010 | 10:36 PM
  #2  
itsMikey's Avatar
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From: Scottsdale, AZ
Car: 89 GTA/93 S13/91 Si
Engine: 5.7 350 TPI
Transmission: 700R4
Axle/Gears: 3.23
Re: 2 15s ported

awsome...always wondered if someone put 15's in a third gen..pics of it installed??
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Old Mar 27, 2010 | 02:09 PM
  #3  
GeeJenn91RSV8's Avatar
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From: Pittsburgh Pa
Car: 1991 Camaro RS
Engine: 305
Transmission: 700 R4
Re: 2 15s ported

Be sure to post pics after you install it!
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Old Mar 27, 2010 | 11:09 PM
  #4  
88iroctpi305's Avatar
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From: Ohio
Car: 1988 Camaro IROC-Z and 91 Z28
Engine: 305 TPI and 350 TPI
Transmission: 700r4
Axle/Gears: unsure of ratio but POSI (:
Re: 2 15s ported

sweet thanks bro. can you take more pics? of it installed and better angles of the shape if you get the chance
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Old Mar 28, 2010 | 08:30 PM
  #5  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

so i hooked them up today and holy crap they are so much louder now they will rattle the wax outta your ears and now they will even make the wing flex pretty good too lol ill get some pics of it instaled soon
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Old Mar 28, 2010 | 10:10 PM
  #6  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

ok so here are the pics of it instaled im pretty proud of it
Attached Thumbnails 2 15s ported-compressed1.jpg   2 15s ported-compressed2.jpg   2 15s ported-compressed3.jpg  
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Old Mar 28, 2010 | 10:12 PM
  #7  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

what do u mean the shape like the bottom and stuff?
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Old Mar 28, 2010 | 10:32 PM
  #8  
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From: Dallas, Tx
Car: 1991 camaro rs
Engine: 305 tbi
Transmission: t5
Axle/Gears: stock
Re: 2 15s ported

if your interested in a bigger cap i have a 5 farad for sale for 65 shipped.
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Old Mar 29, 2010 | 10:42 AM
  #9  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

No thanks man I don't think they are really worth it I just got that one when I bought another system from a buddy i plan on gettin a better aternator first thanx tho
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Old Mar 29, 2010 | 11:11 AM
  #10  
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 2 15s ported

Neat, but I woulda made the 11" rear lower deck at an angle, up to the top deck, instead of the lower being flat & a 2.5" step up.

I woulda made the air flow between the upper & lower areas better & still be functional for mounting an amp or whatever, if you wanted to mount one there.

But it is your car & your box. Only you hafta be happy with it. I was just thinking out loud.
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Old Mar 29, 2010 | 11:23 AM
  #11  
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 2 15s ported

BTW.....

Your missing the dimensions in your lower diagram for the hatch latch notch. And what perspective is the upper right pic?
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Old Mar 29, 2010 | 12:10 PM
  #12  
sailtexas186548's Avatar
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From: Kemah, Tx
Car: 1991 z28
Engine: Turbo 310
Transmission: T56
Axle/Gears: D44
Re: 2 15s ported

Originally Posted by Stephen
And what perspective is the upper right pic?
it's looking at the box from behind (like standing behind the car and looking through the taillights and liscense plate)
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Old Mar 29, 2010 | 02:43 PM
  #13  
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From: Ohio
Car: 1988 Camaro IROC-Z and 91 Z28
Engine: 305 TPI and 350 TPI
Transmission: 700r4
Axle/Gears: unsure of ratio but POSI (:
Re: 2 15s ported

that looks so fn sick bro! damn really glad you got those numbers and pics up for me.lol. you should put vids of it on youtube. bet it slams hard!
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Old Mar 29, 2010 | 05:05 PM
  #14  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

Originally Posted by Stephen
Neat, but I woulda made the 11" rear lower deck at an angle, up to the top deck, instead of the lower being flat & a 2.5" step up.

I woulda made the air flow between the upper & lower areas better & still be functional for mounting an amp or whatever, if you wanted to mount one there.

But it is your car & your box. Only you hafta be happy with it. I was just thinking out loud.
i couldnt angle it it almost touches the hatch as it is i had to do it that way cuz it was the only way but ya i wish i coulda mounted the amp there just not enough space



yea ill try to get some vids up soon and with those hx2s ull have to do some work to get them to mount i looked at mine and i only have like an inch on two clearanse between the glass and the surround and i no urs are deeper and the surround is taller so the only way will prolly to just move them up as far as possible or tip them towards the back

the next step will be electrical when it hits hard my volts drop almost all the way down to 12
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Old Mar 29, 2010 | 05:06 PM
  #15  
88birdttop's Avatar
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Car: 1988 firebird
Engine: 350 and a holly finally
Transmission: 700r4
Axle/Gears: 3.42
Re: 2 15s ported

Originally Posted by 88iroctpi305
that looks so fn sick bro! damn really glad you got those numbers and pics up for me.lol. you should put vids of it on youtube. bet it slams hard!
thanks man
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