Valve springs for howards cams

Download the Howards catalog.

They call for springs PN 98438. Dual springs. But as said, the height won't be right. So look at the installed seat pressures and the rate for those recommended springs, and match those parameters for the taller installed height.

That cam has the note that it takes advantage of the .904 OD lifter size so is a bit steeper ramp than many. So a better spring that a simple single spring is to be expected from the mfr.