So I ordered new pushrods for my car because I bent one or two of my old ones. I ordered the stock length which is the 7.2" thinking that's what the previous owner had used. But I put it side by side with the old ones and you can see the 7.2" are a tiny bit longer. So I'm guessing the other ones were a 7.15". If I use the 7.2" is it going to hurt the springs?

 

It's not going to hurt the springs but it may be throwing the geometery off on that one rocker, causing it to ride differently on the valve stem top. Depending on how centered it was before with the shorter PR, it could cause the tip to ride too far to one side and may cause excessive valve guide wear.
If you have to get the car running, I'd at least check the geometery of that one rocker.
Use a felt tip black pen, like a sharpie and color the valve stem top the rocker tip touches..install the rocker as you would normally and set the lash, then cranck the motor over at least 4 full rotations of the crank so the rocker opens/closes 2 full times...remove the rocker and you should see a wear pattern on the stem top...if its centered you're ok.
Also, make sure the rocker is not bottoming out on the locker nut or making any other contact it should not be.

 

forgot to mention, when checking the geometery, you must take the lifter apart to make it solid, otherwise it will just collapse. Pop the spring/retainer off the lifter and take it apart and then insert a bolt with the head cutoff and cut to the full length of the lifter innards so it cannot compress.

 

Hows he gona do that w/ out taking the intake off?

 

You're not...if you don't want to take the intake off, I'd reorder the same size PR that was removed, only takes a day or 2...local speed shop may be able to get it in under a day.

Better question may be why he bent some of them?? Maybe wrong geometery to begin with?

 

I over-revved the engine a few weeks back, and pulled the covers to find a couple rockers not centered on the valve stem. Turns out the previous owner put the wrong guide-plates in. Then I checked the push-rods and a couple of them seemed a little bent so I ordered new. It could be that the push-rod I checked the new against was bent and therefore wouldn't look as long. I'll check again when I get some daylight at home tomorrow. (Working 60hrs a week sucks)

P.S. I appreciate your help guys

 

I would measure them to be precise, I wouldn't guess on the length.