how much valve lift on stock springs?

I have a 71 429 with D0VE-C heads and was wondering how much lift the stock springs could take before I'd have to start running double springs ? I 've had triple spring heads in the past with a 700 lift and 300 duration cam but I dont have the money to do that again so I was just curious if anybody new what the biggest lift cam was that I could put in with the stock springs ? Thanks for the help !

What cam are you thinking about? How bigs the CID? What's are you using t for?

stock springs are for stock cams. You cam card or manufacturer will have very specific matched springs that the prescribe. Never run stock springs with a bigger cam

x2 on that stock springs hardly handel the stock cam and springs are not that much money if you do the cam you should do the timing chain i think you can get stronger springs in a single so you dont have to mill the heads for the dual springs