The engine type has nothing to do with this, and the 5.7 was used on several different Chevrolet vehicles. You need to specify a year, make, and model in order for this question to be answered.
Put in 30-32 ounces and check the pressures.
it takes 2.4 lbs or 1.1kg
1.75 lbs. of refrigerant
2 1/2 lbs.
There is a STICKER under the hood that tells you how many LBS. it will hold.
My repair shop just told me 2 lbs....
600 lbs
The A/C system holds 2.3 lbs (1.0 kg) of R-134A Refrigerant, including the compressor. See Capacities and Specifications on page 5-102 of your "Owner's Manual.....
for R-22 it's aroung 3 lbs/ton
1.88 lbs (0.85 kg) of R-134A refrigerant.....
1.5 lbs or 0.68kg total charge for the R13a refrigerant
2.3 lbs
Usually 2-3 lbs.