Call it a rookie question or a point for conversation, but when do you actually NEED to add a stud gridle kit?

I've been told they're good to have if you run a solid lift / solid roller set up with heavy springs or high seat pressures which may flex the studs, but is there a general rule at which point you'd actually need them?

I'm just curious, I run Hyd roller so I doubt I'd ever need them but I'd like to know what all the fuss is about.

I can understand the Small Block crowd running them because they ring the neck out of their engines at 7500rpm and things flexing at that speed just aren't cool.

But on a BBC? When do you need them?

I don't use them. When I get to the point that I need something better than a stud mounted rocker, I go to shaft mounted rockers(Jesel). By the time you factor in rocker arms, guide plates, studs, girdle, poly locks, etc, you are only about $150-$200 short of buying Jesels. It is just worth it in my opinion. Some of the engines that I use them on don't require them, people just expect it at that price and power level. Most of my engines make their peak power at 5400-5500 rpms. If I am going to turn one much over that, I will use the shaft mounted rockers. It just becomes a factor of rpm and spring pressure. Hope this helps, Eddie.

Thanks Eddie! Nice concise answer. Makes sense too when you factor in total cost etc!

you will never see the rpm or the spring rate that would require them in almost all boat apps...