Don't do it. I have been fighting my sons 1978 caprice that he bought with a engine out of a newer model that has the computer controlled Q-jet and computer controlled distributor. same heads as the TBI. You need to get a manifold that fits and a different distributor from an earlier model. I tried drilling the holes on a Edlebrock, it worked for about fifteen minutes then started to leak water into the crankcase. you also will have fuel issues and will need a regulator and need to plug the return. I am no expert and am putting the other one back on. Good luck, it can be done but I am not sure what you gain, TBI heads weren't designed with a carb in mind
you can as long as you use your TBI heads if you want to use the vortec heads with TBI you will need a special intake manifold or a carb manifold with a adapter to mount your throttle body to the carb manifold heres some more info TBI heads will mount to the vortec block TBI intake manifold has 12 bolts vortec intake manifold has 8 bolts
tbi engine top end is different from carb engine top end. on a carburated engine, the intake and heads use 90 degree angles for intake mounting bolts. on a tbi engine, the intake and heads use 75 degree angles for intake bolts. you can choose one of these three options: entire new engine. intake manifold designed for tbi heads but utilizes a carb mounting flange on top or tbi manifold to spread bore or square bore adapter
A 600 carb should work good up to about 5500 rpm. If you plan to rev over 5500, a 750 carb would be a better choice.
yes it will bolt right in.the 175 has same mounting as the 153 use the 350 carb and parts if you have them but h carb will work.might use better main jet.
Differences with the rear main bearing, and the intake manifold angles
The 600 should give better throttle response, whereas the 750 should produce more horsepower above 5000 rpm. Most people are more satisfied with the smaller carb in these situations.
Spray the throttle body (carb) with cleaner, not carb cleaner. You should use throttle body cleaner because there is a coating on the throttle body that will be removed if you use carb cleaner and that coating that comes from the factory should not be removed.
Average 18-45 depending if the motor is cold or not, depending what oil weight you use.
The 85 intake manifold won't work with the 90 heads, so you will need to purchase an aftermarket intake if you want to use a carburetor or use a 87 to 95 intake if you want to change over to TBI.
Use a dwell meter to set the gap at 30 degrees.
Yes you can. But you will need to use a different intake manifold,one ment for a early model small block engine
Yes. While the computer does monitor the oil pressure, since you eliminated the TBI in favore of the carb, the computer couldn't use the signals from the sensors to adjust the engine. Esentialy, the computer has no control over the functions of the carb hence the oil giage doesn't need the computer to function. It is attached to the engine through mechanical means(hose) or through direct connection from the gage to the sensor(rheostaticaly)