Pushrod length with stamped rockers on Magnum

It seems that postings are here are more for adjustable rockers. I have stamped steel on my 5.9 with reground cam and .028 head gasket. I have a checking pushrod but unfortunately it's a hair too long and puts slight pressure on the factory roller lifters. It does spin freely with slight resistance and the rockers torqued to 21 foot pounds. I tightened the adjustment until I could not spin the pushrod with my fingers. It measures (same as the stock) 6.9 inches.
Can I just add x amount to get my pushrod length? Shooting for .080 preload.

I would think so, especially if you have no lash and no preload. If it's just sitting in the cup of the lifter, see if you can move the rocker without compressing the lifter. If it does compress with no extra lash, I'd say get some 6.980" pushrods.

watch the utube vids on "rocker arm geometry". the one by straub industries is simple/good. with the cam at 1/2 lift you want the rocker at a 90 deg right angle to the valve stem THEN you get the right pushrod length to take up the space between lifter & rocker. EDIT its harder to scribe the horizontle line on the OE "sled" type rockers but you can do it

Thanks Robert. I started watching that video but it looked like it was for adjustable rockers. I'll revisit. There was also some good info on the Hughes site.

yes the straub one was for adjustable rockers. for yours I would get the cam at half lift/get the right angle then add on however much you want for preload if hyd lifters or subtract for solids for the ideal length you want. & you dont want the light checking spring to overpower the hyd lifter inner spring when checking, just keep tabs on that.