500, 472, 425, 368 Discussion, Info Needed For '79 Coupe DeVille! in Cadillac Engine Technical Discussion; Just bought my first Cadillac!
It's a '79 Coupe DeVille with a 425 (7.0L) big block!
I want to gather ...
There's nothing wrong with a Q-jet. Get it rebuilt or get a rebuilt one and it will run fine. You will never get as good gas mileage with any other carb.
As for the rest of the '79, they're great car! Not too much to worry about, except basic maintenance. If it has much over 100k miles, the timing chain could be changed.