I just bought my first camaro an 84 L69 Z28 Third gen fans know this is the only year with the wanne be efi carb. Im not sure what to do with it though. The car runs fine but gets bad milage. upon investigating I found a hollowed out cat and pinched of air tube. i think this is why the exh. always smells like its running rich. After looking at the carb I've found alot of cut and plugged vacuum lines and a whole mess of unplugged electronics. assuming they are computer wires for the carb. So should i try to rerun all the vacuum and start plugging things back in or buy a carb, manifold set?

 

Welcome aboard thirdgen.org.

Every V8 3rd gen with a carburetor (1982-1987) had the computer command carburetor (except some export models such as Canadian delivered cars). It's a very good street performance carb with more potential than the engine.

Since your car has been desecrated, it would be best if you could post pictures of both sides of the carburetor, the distributor, and general engine compartment.

My guess would be the carb only has been replaced with a non-computer carb. Post pictures so we have a better idea.

What transmission do you have?

 

Its a 700r4 with 3.73 rear. Ill get pics after its pouring out right now

 

pull the computer. pull the distributor for a non-computer controlled distributor. hei is fine. get the msd advance curve kit. put the light and medium springs in there or both light springs. use a blue or black bushing.


pull that junk carb and get a holley vacuum secondary 3310 if u want economy and moderadte performance. max performance get a dp. you can tuen it to be very street friendly but thats for more advanced users...start one thing at a time.

 

I don't agree with pull everything and go holly. unless everythings already been pulled then why not give it a good shot to return to original carb set up and then make up your mind?

 

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how do i post pics?

 

not only is it a hassle to return to the factory stuff, but there is no reward. you are spending time and money for what? mileage, no. performance: try again. the cars were choked from the factory and their ignition timing settings were horrible. everything is geared towards: not performance or even economy, but emissions requirements. its so much easier and cheaper to go with simple aftermarket parts that are proven to be effective in both the performance and economy aspects. if done right, you can lower emissions better than the factory settings as well.

 

Look for "Attach Files" and click on the "Manage Attachments" button when you reply.

Holley from factory = no performance gain. The engine is absolutely not "choked" with the factory carb. Factory exhaust, yes; factory air cleaner, yes; factory carb, not even close. The factory q-jet is capable of 750 CFM flow, same as the 3310 Holley you suggested. The L69 timing curve is better than what you're going to get with a mechanical/vacuum distributor. No way a square-bore Holley is going to have better economy than a q-jet, either factory computer controlled or mechanical. If you aren't getting good fuel economy with a q-jet, you either have your foot in it all the time, or you aren't interested in learning how the carb works. No way no how is a mechanical non-feedback Holley going to give lower emissions than a computer q-jet - at least, not with the same driveability and power.

Don't try to spew misinformation around here. That dog don't hunt.

 

i can see respectfully disagreeing, but being an ***, is something i can't come to terms with.

point me to the place where i said the carburetor is the part of the engine that comes choked from the factory. i said the engine comes choked from the factory. pay attention hero. and take a look at the L69 factory curve there chief. just because the carbs have the same cfm rating, doesn't mean they act the same at all. spread bore carbs can get better mileage, yes, but in computer controlled form NO NO and NO. the holley is way more tunable and user friendly. they are cheap. i got one a while back for 120 bucks rebuilt ready to go. its your engine, and now i will think twice before putting my input down here in this site again.

 

well i need to retake the pics i used too high of a quality setting on my camera and the pics are 1.53 and 1.62 and the site will only take 1.0 mb ill do it tomorrow.

 

all you need to do is open the pictures in paint and click the tab that says image, then stretch/skew and put in 50 percent for both. save as jpeg then there ya go, done. if you need to make it even smaller, go smaller than 100 percent every time until it satisfies you.

 

Well, if you weren't using words that aren't allowed by the Board filter, I might be able to figure out what I'm being.

No, you said the car. In your post before that, you said to replace the carb. Any reasonable reading would conclude you were saying the carb is choking the car.

And I would recommend you pay attention to Board rules about being respectful.

And I respectfully disagree. Feedback is always going to adjust to changing conditions better than a non-feedback system.

Since your comments were general in nature, it should be pointed out that none of your goals (power, driveability, economy) can be achieved more cheaply by replacing the factory system with a non-feedback Holley, etc. If your factory system has been fubar'd, that's a different situation. But, what hasn't been discussed yet is that putting a non-computer controlled carb on any U.S. street driven 3rd gen is illegal in all 50 states.

That's always the case. Nobody here on thirdgen.org can dictate what any other member does with their car. We offer advice, nothing else. And, we should all carefully consider what we're posting.

In that light, I apologize for my use of the word "spew". The rest I stand by.

 

as you can tell im not to computer savy

 

picscarb.jpgscarb1.jpg if the pics are small let me know i suck at this its not my email or ebay