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not sure what this is, can anyone help??

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Old Sep 17, 2005 | 01:15 PM
  #1  
roughskinjrz's Avatar
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From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
not sure what this is, can anyone help??

there is a black cylinder looking thing sitting on the drivers side, "battery space", same spot where battery sits on the passenger side.

its black and says Fuel Tank on the middle one, PCV on one side, and Carb Bowl on the other end, the only hose is in the middle to the Fuel Tank.

also the car used to be fuel injected, and im trying to clean up wires that are not used in the engine bay, so this may have been for FI, but not im carbureted.

can anyone help with what this is, i will post pics if needed.

http://img330.imageshack.us/img330/8...nderbox4fn.jpg

Last edited by roughskinjrz; Sep 17, 2005 at 01:29 PM.
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Old Sep 17, 2005 | 01:34 PM
  #2  
8Mike9's Avatar
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From: Oakdale, Ca
Car: 89 IrocZ
Engine: L98-ish
Transmission: 700R4
EVAP/Charcoal cannister, takes the fumes from the tank and reburns them through the engine.
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Old Sep 17, 2005 | 02:48 PM
  #3  
roughskinjrz's Avatar
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From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
so i need it?
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Old Sep 17, 2005 | 02:53 PM
  #4  
ridecamro's Avatar
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Joined: Feb 2004
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From: MN
Car: 91 rs
Engine: 250
Transmission: 700r4
Axle/Gears: stock??
lets just say it helps also helps with emmisions if you have any and also can help with gas milage
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Old Sep 17, 2005 | 03:47 PM
  #5  
roughskinjrz's Avatar
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From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
well what is the carb dump and pcv valve for??


can i plug the pcv valve from the carb to that box, its in the valve covers right now
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Old Sep 17, 2005 | 04:01 PM
  #6  
88_Import_Slaye's Avatar
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Joined: Apr 2003
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From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
i went to v6 fi to v8 carb and i tosse the canister, u dont need it for carb if u have EGR, keep the pcv in valve cover
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Old Sep 17, 2005 | 04:10 PM
  #7  
84z28350's Avatar
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
I have recently tossed my EEC and jetted alot leaner to keep a/f correct and noticed a bit better gas mileage.
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Old Sep 17, 2005 | 04:10 PM
  #8  
roughskinjrz's Avatar
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From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
i can toss the canister then, and what is EGR?

the hose from fuel tank on the canister goes form a rubber hose to a steel line along the engine bay, what do i do with that?
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Old Sep 17, 2005 | 04:13 PM
  #9  
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From: Yellowknife, NWT, Canada
Car: 84 Z28
Engine: 357
Transmission: TH-350C
Axle/Gears: 3.43
I just let my line dangle in the fender for now.

As for EGR if you have it you will see a big ugly thing sticking out of your intake on the passenger side just below and to the rear of the carb. It recircs exhaust for faster warmups in winter and whatnot. That has also been junked on mine since i went to an edelbrock intake.
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Old Sep 17, 2005 | 04:17 PM
  #10  
roughskinjrz's Avatar
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From: Miramichi, NB
Car: 86 Monte Carlo
Engine: Blown 489
Transmission: TH400
Axle/Gears: 9" 370s
well i have an edelbrock air gap intake and i put it on, and there was no big hose going to the back of the carburetor. only hoses on the intake were brake booster, and heater hose.
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