Mechanical Roller Lifters

At the local movie theater now. Info is at home. Howard is very high lift. Will have to keep an i on the spring. But will run really good. Hughes a more forgiving spring eater. But not build as much power. I will probably go with Hughes. Smaller cam. Easier on parts.


Lift isn't a very good indicator of valve spring life. Valve train mass, how aggressive the lobe is and RPM are the big factors.

I've had some relatively low lift lobes eat springs on the dyno. And those lobes broke other stuff too.