what ratio are these ones???

[vt_on_20s]

hey guys i have recently bought a new ecotec motor and i found that it has yella terra rockers in it.... they dont say the ratio on them like my previous motors rockers so i dont know the ratio... they say yella terra on them and have an 8 on the upper side of all of them. the 8 is in a circle but i dont think it has anything to do with the ratio..... how do i find out what the ratio is????

i can get a photo if necisary! please help as i need to know if i should put my other set in.....

[TappetHead]

They are the die formed Street Terra rockers in 1.8 ratio.
The first type of rockers we made for the V6's.
Cheers.
Mark.