High(er?) Resolution Voltage Divider

New code:

/*
Print output for voltage divider
*/
int v1 = A0;
int v2 = A1;
float conversionFactor = 3.3/1023;
void setup() { // Function to setup serial
  Serial.begin(9600);
}
// the loop routine runs over and over again forever:
void loop() {
  // read the input on analog pin 0:
  float av1 = analogRead(v1);
  float av2 = analogRead(v2);
  // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 3.3V):
  float avc1 = av1 * conversionFactor;
  float avc2 = av2 * conversionFactor;
  // print out the value you read:
  Serial.print("v1:");
  Serial.print(avc1,8);
  Serial.print("|v2:");
  Serial.print(avc2,8);
  Serial.println();
  delay(1000);
}

Changed everything to float and added 8 to the print function. The print portion was my error.