Chuck84TA

Looks like my cam is a bit too much for the driveablity I want so I am switching to a non CC Qjet Stage 2 rebuild from SMI.

So, my question is ..

1) will my electric fuel tank pump still work without the ECM?

2) will my check engine light be in if the ECM is removed ?

3) will I loose anything else?

Thanks !
Chuck

midias

What cam do you have?
What have you done to tune it?

You will need a new distributor, fuel pump relay bypass and lock up kit for your trans if it is auto.

Chuck84TA

226/234 cam
Unhooked the distributor from the ECM, timing runs at 25 BTDC ish when hooked up.
Best vacuum is 15psi on a good day.
Carb has been fitted with larger idle tubes

I already have a vacuum dizzy to use

No, it's a 5 speed

Fuel pump relay bypass?

jwfirebird

iTrader: (2)

put vacuum dizzy in it,

which engine did it have, i think the relay was ecm controlled on the crossfire engines carbs the diagram for 84 isnt shown. the 86 one says its not connected to the ecm

Street Lethal

iTrader: (16)

You need to hook the pump to a switched source for it to work continuously. Yes, your SES light will light up without the ECM receiving data. Yes, I feel you will lose driveability rather than gain any. Bigger cams need more fuel, so up your fuel pressure and tweak the stock carburetor. I wouldn't bother with a non-cc quadrajet, unless you like wasting money because both carbs do the same thing Chuck, they meter fuel...

jwfirebird

iTrader: (2)

bigger cams need more timing too, and its way easier just to turn the dist a little or tweak a screw on the carb than dck with a friggin computer and dwell meter and all that other nonsense any time it screws up. which is quite often on stuff thats 30 years old.

Street Lethal

iTrader: (16)

Your giving the CC-Carb and its' ECM way too much credit in terms of being incompatible. Tuning it is a breeze, and it will do what you command manually, it has no choice. You are not a slave to it like the newer ECM's. I have five non-cc quadrajets sitting in the garage, and one L69 system (carb, dizzy, sensors, wiring and ECM) removed from my old '84 Anniversary TA. If I were to abandon port injection and go back to a carburetor, I wouldn't hesitate to grab the L69 system over the other carbs w/vacuum controlled distributor. The LG4/L69 systems are so freaking easy to work with, I can't see how anyone would have a problem with one. But I digress, if he wants to tune with a screwdriver and timing light, more power to him...

jwfirebird

iTrader: (2)

there is a whole lot more to making those work than just the carb/dist, you have an array of sensors, wires, tubes, pcm, all have to be good and sealed to run properly. i have one vacuum line going to the dist and one going to the brake booster. the weight savings is worth the effort alone. people who think it doesnt run well with out all that junk are mistaken. they did just fine without a pcm in every condition for like 80 years

Chuck84TA

So some say "don't bother, you're wasting your money getting rid of your ECM controlled carb"

The reason I had for switching is due to the larger cam that I have -- 226/234.
From whom I've spoken to, Sean Murphy for one... its going to give the ECM fits since it's always trying to aim for that 14.7 to 1 stoichmeteric fuel/air ratio.

Put in the non cc carb, then forget about it... Seems to be the the most logical answer.