I bought a set of Yella Terra YT6624 for $350. I've been reading that they have failure issues. They are new in the box. I'm running the trip 12 cam with PAC 1218 springs. 5.3 with 13psi daily driver. I also have a trunnion upgrade kit still in the box. Which rockers would be best? I'm going all forged this summer for more boost.

 

They are the older style

 

You running a high ramp rate cam?

 

Its stock48's 212/212 112

 

Open load on spring is 318 lbs

 

Most failures I've read had a high open pressure spring and xer lobes.

I run yts. Haven't had any problems. I'll check them when I get home to see where the stamp is. They're off the engine right now

 

Thanks

 

I have the new style, the 1.7 stamp is offset.

I think you'll be ok. That is a pretty mild cam

 

Ok thanks

 

I would run stock rockers with the grunion upgrade. The stock rockers are generally lighter on the tip and with that cam will never experience any issues, especially with a grunion upgrade.

Andrew