Need answer please

[turbov6joe]

If a Hyd cam has an advertised lift of .459 with a 1.55 rocker, what would be the advertised lift with a 1.65 or 1.67 ratio rocker? TIA

 

[MARINES185]

assuming I did my math correctly, it should be .488'' with 1.65
rockers and .494'' with 1.67

 

[turbov6joe]

Just out of curiosity, how did you come up with those numbers? For the life of me I can't remember how to do it!

 

[buickpower]

numbers

first you divide the original cam lift you mentioned by the rocker arm ratio you also gave. this gives you the height of the actual cam lobe. then you multiply it by 1.65 to get .488 or 1.67 to get .494