efi-diy.... That is the spring pressure recommended by Comp Cams for that particular cam / lifter combo. It is within a few pounds of the stock Chevy springs. Higher spring pressures are only needed for extreme lobe profiles at high rpm to keep the valves from bouncing off their seats and to return them quickly. The 260H cam is a low to mid range cam and doesn't require revving over 4600 - 4800 rpm. Why would you want more spring than what is needed? Exactly what would be the benefit for a street engine that hardly ever will go over 4000 rpm and more likely will spend most of its life below 3000 rpm? Comp has an equivilent to the Z 28 spring and if it was needed for that cam I have to think they would have it listed. Also this cam is hydraulic and the Z 28 is a solid lifter cam. A slight difference in lobe hardness between a hydraulic and a solid. If the cam in your engine is s solid grind then of course you shouldn't see any premature wear with those springs.
So the way I figure it is simply if his springs are within spec after having the head work done and they will work fine with this cam, then why spend money that is not needed and why spend it on parts that are beyond what is needed.
