Yes. Generally you would also want to replace the intake manifold as well, but there are adapters made for this purpose that work fairly well with some loss of efficiency.
NO.
Rochester Quadrajet
Advertised horsepower is, 2 barrel carb.- 215 HP @ 4400 RPMs. 4 barrel carb,- 225 HP @ 4600 RPMs.
With a 4-barrel carb. 155hp @ 4000 rpm
Use a dwell meter to set the gap at 30 degrees.
Advertised Horsepower is....165 HP @ 3800 RPMs. with a 4-barrel carb.
Probably not.
Advertised horsepower is 350 light duty is 170hp @ 4000 rpms. 4-barrel carb. 350 heavy duty is 165hp @ 3800 rpms. 4- barrel carb. 350 light duty Calif. is 170hp @ 4000 rpms. 4- barrel carb.
The 350 Rocket from the olds is Far superior. I just put one in my Grand Prix switched from the 350 Chevy and with a 4 barrel holly carb you will notice a BIG difference.
350 cu in with 2 barrel carb, 8 degrees at 1100 rpms 350 cu in with 4 barrel carb and standard transmission, 8 degress at 1100 rpms 350 cu in with 4 barrel carb and automatic transmission, 12 degrees at 1100 rpms
depends on the size of the headers and the size of the carb. low end.... 650 carb, small tube headers, you can expect about 275 horsepower
Look on the carb for a small vacuum source above the throttle body. You would want one that has no vacuum at idle.