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What's it take to eliminate my ECM?

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Old Apr 17, 2001 | 11:26 AM
  #1  
Golden80's Avatar
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From: Littleton, CO
What's it take to eliminate my ECM?

I have a LG4 305 with the CC QuadraJet. I want to eliminate the ECM in my car and had some questions. Basically what I need to do is swap out the carb and a the distributor and then disconnect the ECM, right? I was thinking of going with an Edelbrock 50-state legal QJet and a Summit blueprint HEI distributor. My main question is if the ECM controls the lockup on the TC or if it controls anything in the tranny on the LG4.

Matt
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Old Apr 17, 2001 | 12:53 PM
  #2  
burnoutrpm's Avatar
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From: outerspace(maybe..pluto)?
thers a decent article in the tech articles of this site they are pretty through on this subject. i did this too and it was not bad at all and i'll never look back GO FOR IT!! more power and better t. response!! email me if you have any questions not anwsered by the tech page.!

------------------
89 firebird formula

356 10.5:1compression CURRENTLY DEAD!!! BEARING FAILURE!!
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
sportsman 2 heads 64cc 2.02/1.60 valves 200cc intake runner
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!
griffin daul1" core rad.cutom fabrication to fit(but no cutting )

future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!

current engine underway..sucks not having a car!! Building the same engine but .060 over balanced and blueprinted..decided to get a little more serious this time around!!
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Old Apr 17, 2001 | 03:01 PM
  #3  
SUPER-SPORT-CHEVY's Avatar
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From: Pueblo Co usa
You should be fine as far as the transmition goes. But before you get to carryed away with the joy of ripping out the ecm and the wires find the grey with wite stripe wire and ground it. This will shut off the check engine light.
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Old Apr 17, 2001 | 03:36 PM
  #4  
Golden80's Avatar
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From: Littleton, CO
For emissions the light needs to blink on when the car starts. Is there a way I can have it come on for about 5 seconds and then turn off? I'm sure if there's an electrical engineer somewhere they could tell me how to do this.

Thanks,
Matt
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Old Apr 17, 2001 | 09:15 PM
  #5  
JP84Z430HP's Avatar
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From: Johnstown, Ohio
Car: 84 Z28
Engine: 355 (fastburn heads, LT4 HOT cam)
Transmission: 700R4
Axle/Gears: 9-bolt, 3.27
You could get in behind the cluster and rewire it to work with the choke light! It will come on and stay on until the engine is running, just as the check engine light does!

------------------
Working on:
'84 Z28 LG4 305 with 200,000 original miles!
Added dual elec fans.
145 MPH IROC Speedo
Building 430 HP 350 (ZZ430)
using primarily GMPP parts.
Short block sitting on a stand. (Man, those Fast-Burn heads sitting on it look good!)

Starting to look like the Kicker poster child!

ASE Certified Master Tech
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Old Apr 17, 2001 | 09:33 PM
  #6  
Golden80's Avatar
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From: Littleton, CO
Perfect! Can't believe I didn't think of it. Time to get out my philips head screwdriver and my soldering iron!

Matt

[This message has been edited by Golden80 (edited April 17, 2001).]
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