LT1 LS1 Rad

[426 Wedge]

The LT1 cools better but how can I tell the difference between the 2 other than the LT1 has an extra nipple? Is the core visibly larger?

[sweetbmxrider]

Low coolant sensor under rad cap bout 3 inches down.

[Firehawk441]

Low coolant sensor under rad cap bout 3 inches down.

Later years don't have that sensor.

[sweetbmxrider]

Later years don't have that sensor.

Later year lt1s? Or later year fbodys? Like lt1 vs ls1?