alright i need some answers because swap day is almost here.

old motor-305 with ccq-jet
new motor 350 out of 90 1ton Chevy tbi motor low miles stock

i want to keep the computer controlled q-jet will i need to modify it to run the 350? will the 305 computer work with the 350 with out major drivability issues?

any additional info would be greatly appreciated this is my first big project on the car and dont wanna get stuck on something and loose patience

 

The ccc-qjet will run fine. You'll need to make adjustments for the MCS dwell to match the new motor. Changing secondary rods and hanger may also help.

The system will also require replacement of the existing knock sensor and ESC module for a 350 set. Same KS and ESC that would go on an 87 or later 5.7.

 

ok thank you can i have some terms explained
what is the mcs dwell and how do i adjust it
the motor has a knock sensor in it and where can i get a esc module ? parts store?

 

Mcs dwell is the mixture control solenoid. You will need to hook up,a dwell meter to the carb and use the dwell to find the right adjustment..I know this is a very simple explanation but the best that I can tell you...

There was a really good article by Ray Bohacz in Muscle Machines regarding tuning the qjet

 

You adjust the MCS dwell by adjusting the idle air bleed.

The Carburetor forum has a sticky in the top section with the factory instructions for the CCC (E4ME) carb.

FWIW, I ran an '86 system on a ZZ4 type 350 with no issues. It adjusted to factory specs as if it was still on the 305. I did change the secondary hanger and rods, but that doesn't affect the adjustments controlled by the computer.

 

where is the esc located or at least what does it look like i wanna start labeling wires and hopefully have it done by the end of the week

 

The esc is in the esu which plugs to the distributer. When you set the timing you unplug it , look for a single wire from the dist that has an inline plug. However you should be able to run the same distributor and intake on the engine.