An injector's size is measured in how much volume of fuel it can flow in a given period of time. US Domestic injectors are usually measured in pounds per hour (lbs/hr), while injectors for import engines are usually measured in cubic centimeters per minute (cc/min). You can convert between the two: To convert cc/min into lbs/hr, divide cc/min by 10.5. For example, the stock 295 cc/min injectors works out to 28 lbs/hr. To convert lbs/hr to cc/min, multiply pounds per hour by 10.5.
Metric measurement of engine displacement. 1000 cc = 1 liter (litre) which is about 61 cubic inches (61.02374409). Thus a 428 cubic inch engine is 7 liters (428/61) and a 2 liter engine is 122 cubic inches (2 x 61).