In case anyone is interested, I am building a high performance E4ME Quadrajet (Computer controlled) and am looking for someone interested in using it on their modified engine. A 383 would be nice, but a really stout 350 would be okay too. I am not looking to make money on this, but would need to be reimbursed for my expenses. The reason I am doing it is to show the potential of these great carbs that are so mis-understood and vastly under-rated and silence the nay-sayers once and for all.

Most of you know I have been on a mission for some time now to become an expert on these devices. I bought my ’81 years ago, then found out it had this unique computer controlled carb that everyone said was not suitable for high performance and no mechanic will touch. Instead of going the “trash and replace” route, I decided to study the E4ME and the entire Computer Command Control system and master it. As I looked into the system, I saw some challenges, but in the end, no performance limitations. I believe the E4ME and the entire ’81 CCC system can easily be made to support any level of street performance.

Over the years I have modified my engine (Dart 180 cc heads, Comp XE262 Cam, headers, flat tops etc.) and carburetor one step at a time. I have done a lot of experimenting and learned a lot of tricks for this carburetor (it’s been out of the car on the bench for surgery more times that I can count), and my car will effortlessly shred the rear tires, even with the stock 2.87 rear gears.

I rebuild these things as a hobby, and recently picked up a great core from an ’82 V8 Camaro with manual transmission. It is identical to the ’81 carb except for the date code numbering. I have already torn it down and inspected it and have begun modifications. Some of the mods will depend on the specs of the engine it will go on, so that is why I’m looking for someone with a performance engine who is interested. If you are running a stock carb (or have just replaced secondary rods) and have a well modified engine, you will definitely feel a difference in the seat of your pants with this carb. I guarantee it! I can’t give an exact price until I know exactly how I will be building (I need your engine specs), but around $180 including shipping should be about right. Anyone interested please let me know.

God bless, Sensei

P.S. I am not posting this in the “For Sale” section because it is more of a technical demonstration than simply an item for sale. As I said, I will just be charging enough to cover expenses.

 

So what did you do to the carb?

 

Well, in addition to a complete cleaning/ new parts (kit, float, filter, etc.) fine tuning the linkages for optimum throttle plate alignment, setting secondary air bleed standing height and installing brass bushings on the primary throttle shafts (all my standard rebuild stuff), I am also doing the following:

Perforate Secondary Pickup Tubes. While Cliff Ruggles says never to do this, Doug Roe recommends it and it was stock on Carrol Shelby's Rochester Cobrajets. All I know is that after I did it, the secondaries hit like a brick though a plate glass window.

Open Idle adjustment screw ports. If I build this for a large displacement engine, I will also be modifying the idle tubes and restrictions.

Secondary fuel channel restrictions opened and well plugs re-sealed

Secondary Rods (per application)

Secondary air valve stop modified for full 795 CFM potential

Modify accelerator pump rod length and linkage for maximum pump shot

Set all carb adjustment parameters (stops, bleeds, screws) for application

Maybe another trick or two.

God bless, Sensei

 

Come on guys someone must have an 81 with computer intact to try this on!!!!!

 

Are the idle adjustment screw ports not up to delivering the pull potential capacity of the carb?

 

I agree the EM4E is essentially a standard Q-jet with an externally controlled power piston. If I could do it all over again I would have got a 81 with the ccc still intact. I have tested most of the sensors for the computer control and found that they work remarkably well for instruments that are close to 30 years old.


Dale

 

No, they are quite restrictive. Even on most of stock engines you can run the screws all the way out and still not get the mix over rich.

God bless, Sensei

 

Wish I had a performance engine. My '81 has the stock 350, original carb (re-built once), and original CCC. I'll be watching this post with interest. Good luck, Sensei.

 

Sensei,

I have an '80 with the 305... same setup.

I was curious what you might charge for just a stock rebuild of my carb? It actually works perfect... just leaking a little fuel and probably is due for some work.

 

For a stock car, there is not much that needs to be done except optimizing the original set up. Adjusting all the mechanisms etc. Now, there are a few parameters that can be tweaked (pump shot for example), that can allow other adjustments to also be pushed to the edge (air valve opening time/ rate), but you won't feel any tremendous difference without mods to the rest of the system (exhaust, engine components) For a bone stock set up, you really just need to have everything set up right for it to run very well.

God bless, Sensei

 

Sensei,

I will do it. Just pulled my stocker and will be installing a 383 within a few weeks. I actually pm'd you a few months back asking about your carb rebuilds......this couldn't have happened at a better time.

let me know what info you need.

Thanks
OJ
Phx az

 

Displacement, Cam specs, Head runner size, Approximate compression ratio, model/ type of Intake, details on the exhaust (i.e. Long tube 5/8" primairies into 3" true duals with Flowmwster 40's).

PM me the info.

God bless, Sensei

 

Will do.....thanks again!!

OJ

 

Wishing now I didn't just remove mine and had it rebuilt :-( I saw so much negative about them that I just got an edelbrock carb and a new dist.

I have both the stock q jet (secondaries are sticking) and a stock dist collecting dust... Wounder what they may be worth now...

 

Wait until O.J.'S report comes back, your stock may be going up...

God bless, Sensei

 

Sensei,
What have you done for mods to control total timing?
I understand good aftermarket heads require less total timing?

Barry

 

I would not make that blanket statement, you just have to tune your set up. For performance in an '81 with the CCC system, I would get a Thermomaster Hyperchip, which gives a more aggressive timing curve, then advance the initial timing to 14 BTDC and use premium gas. If you get detonation, back the timing off until it is gone. The computer will back the timing off to prevent damage, so you have a bit of leeway to work with.

God bless, Sensei