ProComp/Speedmaster aluminum heads

Speedmaster is well known for not giving good specs... I would definitely tighten those heads down quite a bit more....
Yea, not sure what I've bought with Speedmaster heads but honestly they seem alright so far... I did go about 10lbs over what their torque said and using their stud kit as well....the engine-airlocked first few mins it ran got up in Temp but then It cooled off and seems fine even few months later... no complaints about the heads yet....