added I bought a project car and trying to figure out what cam is in it. It is a new 383 stroker motor with Chevy performance parts. The cam has 586 WB15 and 190 98R stamped on the end. Can anyone confirm what cam this is? I am trying to figure out what torque converter stall I need.

Thanks

 

The R probably means a roller cam. Were there roller lifters on the cam?
586 is the last part of GM's part number for an LT4 Hot Cam. Lobe lift should be 0.328. Duration at 0.050 should be 218/228

A vernier caliper and a dial gauge can tell you the grind when installed in an engine with a degree wheel on it. You can use them to determine lobe lift and duration.

Without knowing where the engine makes torque, converter stall selection is a guess. The same cam in a 383 and a 350 will make torque at different rpms.

 

 

it does have rollers. Also here I'd a pic of the rocker arms

 

The picture shows the "Roller" rocker arms. Alky is asking about the lifters themselves. You need to put the intake manifold and see if there is a "Spider" bracket the holds the lifters or not.

Also, is that a crack between the two valve springs in the picture?

 

I did put that there are roller lifters above the pic. I will have to go check on that crack issue. Good eye there thanks

 

It can usually be tapped into the cam rather than cut.

 

snap a pic of the other end and i can tell you if its a roller cam straight off the bat