This is just a dizzy question. I guess since the intake manifold I want for my 305 doesnt have an EGR version and I need a new carb anyway I guess I'll just swap to a non computer controled 4bbl. My main question is will the stock HEI work with little mod or do I have to get a vacumme advaced dizzy or does the HEI control the ignition advance? If not, I guess I can just suffer with getting a different intake manifold because I realy wanted to keep the Q-jet.

 

If you swap out the ccc-qjet you'll have to replace the distributor. The timing is controlled by the ecm. Why can't you use the q-jet? What manifold are you using?

The lack of egr shouldn't affect it. I don't have egr plumbed into mine and no worries. I'm pretty sure the ecm's soo was too basic to advance the timing to take advantage of egr under light loads, but I could be wrong. If someone has a better understanding of the sequence of operation, chime in.

 

Well, that was my second option. Not using the EGR, I just did not know how that would affect the carb. I would rather use the cc-qjet. I'm just not a big carb guy, my thing is EFI but I want to learn. Anyway, its the Edelbrock 2701 Performer EPS manifold and it's square bore only. I cant remember if the q-jet is square, or spread.

 

Qjet is spreadbore. Holley, Demon, Edelbrocks are squarebore. If you can get your qjet rebuilt and running right, its hard to beat in my opinion. I have my egr disconnected too, but I think it has more effect on denotation and timing than on your carburation.

 

You can get an adapter to run spreadbore on a squarebore manifold. It will add some height so make sure you've got the clearance. Still a better option than replacing carb and distributor.

Then you'll also have to get a kit to operate the converter clutch on your auto trans, as the ecm controls this too.

 

I will just stick with the q-jet and find a spreadbore manifold. I'm just gonna buy a new q-jet instead of rebuilding the old one. Thanks for all your help! : )