General Category > Quadrajet Carb Talk and Tips

Caddy Q-Jet rebuild advice needed

(1/2) > >>

hgdmartin:
I have a 1973 Cadillac 472 with a factory Q-Jet that I need to rebuild.  I have just added an MTS #5 cam, an Edelbrock intake, and 2" duals to the back with a crossover.  All of the smog mess has been removed from this engine.  I have to believe it will run a bit lean with the modifications. 
Can you all recommend a set of jets and needles that will get me in the ballpark?  Part numbers would be helpful as well.

BTW - I have a donor carb that I am stealing the electric choke from. 


Thanks in advance for the advice.

David in SC

Cliff Ruggles:
What is the carburetor part number?

I thought that year Cadillac still used the divorced choke set-ups?

Do you have the carb apart, and what jets and metering rods are in it?....Cliff

hgdmartin:
Cliff,
Yes there is a divorced choke, but I am installing an Edelbrock intake that does not have recess for coil.  I assumed that I could convert to electric, but I have not looked in depth.  Is that conversion not the best method to choke?
Carb is 7043230 with 0053 stamped next to that.
I am not sure what is inside, and it will be a while before I go in.  What am I measuring when I do go in?

I know I also need the power piston assy with the funny wrapped spring.  The black washer at top was worn badly last time I went in there.

Thanks,
David

Cliff Ruggles:
It is not practical to convert divorced choke carburetors to a carb mounted electric choke.  Possible, but it requires a donor carburetoer that originally came with a hot air choke, early 70's Oldsmobile or 73-74 Pontiac.

Our HP kits come with a new split collar for the power piston, and everything else required for a complete/correct rebuild.

We include the high flow Viton needle/seat assembly, and a complete accellerator pump assembly with upgraded Viton seal.  Nothing else will hold up in modern pump fuel with ethanol in it....Cliff

hgdmartin:
Thanks for the info.
Do you recommend a manual choke?

Thanks

Navigation

[0] Message Index

[#] Next page