Cam break in Springs??

[threewood]

If this has been beaten to death, link me to the threads. Getting ready to break in my cam. It is a single spring and a damper. Does the damper need to come out? And as far as the spring, below is the cam card with pressures, open and on the seat. Maybe I'm over thinking it but was considering buying lower pressure springs to break in the cam.

I'm using Driven break in grease and Driven break in oil.

 

[PRHeads]

The “recommended” springs on that cam card are way too stiff for break in.

I’d suggest 100-120 on the seat and under 300 open.

 

[threewood]

The “recommended” springs on that cam card are way too stiff for break in.

I’d suggest 100-120 on the seat and under 300 open.

That's what I thought. I found some "stock" springs that show 121lbs/192lbs which I will use. Thanks!

 

[PRHeads]

Make sure whatever spring you use has enough travel to accommodate the higher lift.
At least .050” from coil bind at full lift.

 

[threewood]

Absolutely. These heads were put together by Modern Cylinder Head. I only gave them cam card specs to do the valve train so I don'tknow the current spring specs. The springs I ordered coil bind at 1.350" but I will check once installed.