Valvoline appears to have two types of VR-1, regular and "non street legal".
Both have plenty of ZDDP but the "non street legal" has a very reduced level of detergents.
The reduced detergents in the non street legal version are to reduce foaming at high revs. This is not harmful to the engine since the oil is meant for race engines. Race engines are torn down very frequently and the need for detergents to keep crap in suspension is not necessary.
You can see their PDS Sheets here:
VR-1 Dino -->
http://www.valvoline.com/pdf/VR-1%20Racing%20Motor%20Oil.pdf
VR-1 Synth -->
http://www.valvoline.com/pdf/VR-1_Synthetic_Racing_Motor_Oil.pdf
VR-1 non-street legal -->
http://www.valvoline.com/pdf/Specialty_Synthetic_Racing_Oils.pdf