I am in the process of buying a 1987 Z-28 w/ a LG4. The stock CC carb is no good and I don't have the coin to buy a new one thats $350. I called around to some shops and the cheapest rebuild I could find starts at $200. And no Junk yards have a carb that would work. I know the CC Carb can be better in some ways, but I don't really care. so now to my question. What would I need and what would I have to do to convert it from CC to Non-CC. I can go to a U-pull it and get the parts dirt cheap like 10 bucks for a carb 15 bucks for a dist. Any complete engines with Acc. $95. So it would be alot cheaper to do it this way.

Thanks for your help in advance.

 

You'll need a distributor with a mechanical and vacuum advance.

 

oh is that all... I don't need to change the coil or anything else... So all I need is a Mechanical Carb and dist

 

To go to mechanical carb, you'll also have to control the lock up converter if you've got an automatic trans. The cruise control also receives a signal from the ECM.

I can't imagine you could do the entire swap for less than the cost of rebuilding your existing ccc-qjet, but maybe. A rebuild kit runs about $20-30, can of carb dip about $10-15, dwell meter and other tools (if you don't have them) about $30-50, book on Rochester carbs about $15-20 (you'll want this one either way).

A JY q-jet will probably still need a rebuild and unless you're lucky jet/rod changes to properly tune it to your engine. There were mechanical q-jets on Canadian LG4s and some of those guys could probably give you some baseline data. Sonix comes to mind.

The only benefit to the swap I can think of is the ability to fine tune your ignition curve.

 

Its a 5 speed w/o Cruise control. And I have never rebuilt a carb before so I don't want to screw it up more. Apparently its supposed to be harder to rebuild a CC carb vs. Mechanical Carb. I do have a friend that can rebuild mechanical carbs. I have an old carter carb off of a 1972 350 thats a 4bbl q-jet. And if that don't work I can get one for like 10-15 buck at a jy and spend another 20 on a rebuild kit and have me friend do it for free. So it so far would have cost me like $30 for a fresh carb. I could do the whole swap for less that a rebuild on the original carb, alot less. And like I said before I don't care about performace/Fuel consumtion or tuneability for now. I just want to get it running so I can buy it and drive to home.

 

The CC quadrajet's are not harder to rebuild because they are CC, they're harder because they're quadrajets. The fact that they are CC really does not make much of a difference during the rebuild. Keep in mind that most of those carbs you can get from a junkyard that aren't q-jets are made for squarebore manifolds. That adds another $15 dollars for a spreadbore to squarebore adapter. I would strongly suggest rebuilding your stock CC q-jet. I rebuild my brothers and it was not as difficult as some make it out to be. Just label all the parts and don't lose them. Most of the rebuild kits come with pretty good instructions and diagrams on the rebuilding process, and, of course, the guys here at TGO help alot too.

 

What he said.

Lots of info on CCC-Qjet here. Do a search, get the book, rebuild your carb and use the old carter only if you have to.