What's up olds heads I'm having a lil trouble with the olds 350 It's in the car and running but I believe I need to rebuild the carb or get a new one I had all that smog crap taken off but it's still not right to me it's sucking gas like crazy like I said before the shop that dropped the motor is cool but I don't think they know olds to well but they tried I was wondering if anybody could lead me in the right direction as far as getting the cutty right anything would be great

 

Without knowing how it is hooked up it's going to be tuff. Are you using a CCC distributor and carb? What all has been removed, whats left?

 

Yeah - once you start messing with the emission controls on those cars, you can really screw things up. They're not made to run right without it.

We'd need a LOT more detail.

- Eric

 

He had a shop swap his 307 for a 350. So who knows what they did?

 

Hey guys yeah I'm still using the cc distributor and carb should I junk both and if so who has a good distributor and as for the carb what can be done about that I was going to maybe rejet it but then again I don't want another f..king problem so I thought I should just get a new carb once again thanks for the help

 

Oh. I wouldn't have done that.

- Eric

 

What is the 350 out of?

- Eric

 

is it a quadrajet carb it might be adjusted to rich and using to much fuel

 

73omega71 yeah it's a quadrajet .and mdchanic the motor came out of a 72 delta with only 54,000 miles on it

 

Okay, a '72 Delta 8.5:1 350.

Did it have a 2bbl or a 4bbl on it?

And why does it have a CCC carb on it now? Were you the guy who had to set it up to pass emissions? I don't recall.

- Eric

 

Yeah I had to set it up to pass so I used the carb and distributor from the 307
Now that I have the smog out the way I wanna drive this thing because I have another olds 350 I want to put in my 85 cutlass I recently bought so I'm trying to get all the ill bugs worked out

 

So put the original carb and distributor back in the car and see how it goes.

It'll probably need a bit of tuning, but that should work okay.

- Eric

 

Hey Eric that sounds good but when I bought the motor it was mostly complete minus the carb and distributor I wish I had it to put back

 

Eric this project was a first like I said. I want this one done and right so I know what to do on the second one that will be built up for performance so I appreciate all the advice and help thanks

 

That's no problem - you can get 'em in a junkyard or from someone on here.

I'm not sure whether the CCC distributors had any differences in their advance curves - you may only need a carb.
QuadraJets are a dime a dozen.

- Eric

 

There's no reason that 350 shouldn't run well with the CCC system intact and you don't need the vast majority of the smog equipment to do so. Did it run good with the CCC system on the 307? If so, then it should run good with the 350. There's no telling what kind of butchery was done by the guy who installed the 350 and 'tuned' it.

I'll bet if you post some good engine pics we would be able to notice some mistakes.

MDchanic, the CCC distributor itself has no advance. All advance is provided by the ECM. So if you had a CCC distributor that wasn't plugged in to the ECM ( or you installed one on a non CCC engine ), you would only be running at whatever the base timing is set at. You would essentially be running a locked out distributor.

 

Good to know, thanks! I know nothing of the computer controlled cars.

- Eric

 

Alright doublev i will take some pics and hopefully you guys can maybe see what the problem is the car ran good before I did the swap I just didn't like the 307 all that much

 

I'm going to back off and let more knowlegble folks work this out. My car appreciation and knowledge stopped at 72/73. I have no idea on how to t/s a cc smog system past the basics.

 

If all the computer stuff was removed liek you said, you must use a non-computer carb and disty. No way around it. A computer disty has no advance and a computer carb will run rich.
After those are changed and tuned, you will get better results in drivability but do not expect more mpg than the 307 on the computer.

 

I have found very few "mechanics" who understand or even want to mess with the CCC system. If you disable the computer, the car WILL run with the CCC carb, but the primary metering rods will be full rich the entire time, thus returning poor mileage. In addition, the CCC carb from the 307 has a stop on the secondary air valves that only lets them open 70 degrees or so, limiting WOT power. Of course, that carb has lean secondary metering rods as well.