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#1 Old 10-14-2010, 08:25 PM
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Replacing Holley 6280 feedback Carb

I have recently purcahsed a 87 D150 4x4. I has a Holley 2bbl Carb with an electrical connector hooked to it. The wires go into the side of the carb itself. It also has the idle selenoid. Can I replace this carb with the Holley 2280 and just leave the wires that are for the 6280 unplugged or will I have any problems. I dont have to worry about any emmisions etc. Or is there some other things that would have to be done to run a 2280 in place of the 6280.
thanks in advance
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#2 Old 10-15-2010, 06:56 AM
Delray Dude
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Unless there is something I'm not aware of, you should be ok to replace the carb. my 87 is a 2WD and I don't have any electrical connections to my 2 bbl carb. and i'm still (at the moment) running the factory computer. I have removed the air pump, it's true dual exhaust with no O2 sensor, and the cats were M.I.A. when i bought the truck - runs great.
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#3 Old 10-15-2010, 07:08 AM
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opps. I went out and looked at my truck - i do have an electrical connection to the carb. didn't have time - but before you replace - you might unplug the harness that goes to the carb and see if it causes a problem.

I'm planning on ditching the computer soon - so I'm pretty sure this is just a sensor that the computer uses to monitor, so i'd say unplug it and see what happens. if you ditched your computer already, then it should be no problems.
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#4 Old 10-15-2010, 08:25 AM
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I think that wire controls the air-fuel ratio to some degree. On my 87 if I'm not mistaken the O2 sensor is in the driver side ex. manifold. I'll look after while.

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#5 Old 10-15-2010, 09:18 AM
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I UNPLUGGED IT YESTURDAY AND DROVE IT HOME 12 MILES DIDN'T REALLY NOTICE ANY DIFFERENCE. THE ELECTRICAL CONNECTOR HAS I THINK 5 TERMINAL IN IT. PLUGS UP ON PASSENGER SIDE AND THEN RUNS TO DRIVER SIDE OF CARB. BUT REALLY DIDNT SEE ANY DIFFERENCE IN PERFORMANCE. I THINK I HAVE A FLOAT STICKING IN MY CARB AND CAUSING IT TO FLOOD AFTER I CUT IT OFF, EVEN HAS GAS RUNNING INTO THE VACUM CANISTER IN A 3/8 HOSE THAT COME OFF SIDE OF THE CARB WHILE SITTING. i WAS JUST WONDERING OF THERE IS THE SAME VACUM HOOK UP ON THESE CARBS. I WAS TOLD THEY ARE THE SAME EXCEPT FOR THE FUEL MIXTURE(ELECTRICAL) DEAL.
THANKS
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#6 Old 10-15-2010, 09:37 AM
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I believe thats right on the electrical hook up. I noticed on some carb rebuilders site that they list one with the elect. and one with out it for 1987.

Grouchy Old Man
Sport short bed
R&S Automotive cat back duals
SSBC slotted rotors
Tri wing tonneau cover
Ultra 50/51 16x10 wheels
265 70x16 Firestone Destination LE tires
3.55 rear
99-01 sport headlights with Silverstar bulbs
MSD coil
Fram Boost intake -Freebie. I won it
Edelbrock shocks
Yes, grandpas like toys too

87 D100 318 auto. stock


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#7 Old 10-15-2010, 09:57 AM
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I Just Dont Want To Order The 2280 With Out The Electrical Connection And Then There Be Some Differences In Vacum Lines Etc.
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#8 Old 10-15-2010, 11:55 AM
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Well, I looked and there is no O2 sensor on the D 100, its on my 87 5th ave.
Also no electrics on the carb on the D 100. Just a solenoid with a 2 wire plug going to it.

Grouchy Old Man
Sport short bed
R&S Automotive cat back duals
SSBC slotted rotors
Tri wing tonneau cover
Ultra 50/51 16x10 wheels
265 70x16 Firestone Destination LE tires
3.55 rear
99-01 sport headlights with Silverstar bulbs
MSD coil
Fram Boost intake -Freebie. I won it
Edelbrock shocks
Yes, grandpas like toys too

87 D100 318 auto. stock


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