Im going to be putting in a solid lifter cam pretty soon. My current springs are isky's but they are only good to .490" lift.
The new cam specs are: 239/243 at .050, .494/.504 net valve lift, and 110 LSA, in at 106 ICL.

I would like to stay with stock size springs if at all possable. I have some 1.25" z28 HD springs sitting around, will they work or are they too much pressure for this cam? They are 130# at 1.8", lift range 1.160, wire diameter 350 @1.200

I would prefer to cut the heads for a 1.430 type spring but the tall or "HD Z28" .550-.600 lift 1.250 springs will work if you have or can get the proper installed height.
130-140 on the seat is fine & you will be well under 350 open

Thanks mike smile.gif