Thread: 1.9 modified vs. 1.95 roller rockers

Originally Posted by 2003 SSEi

i would NOT do the 105 springs.

the general consensus is to go with the GM L76 (G8 GT) springs. They are the replacement for the LS6 spring

Still, Like stated below...its the Comp 105's that break, not the Crow springs.

Originally Posted by Scimmia

There's nothing wrong with the Crow 105s. It's the Comp Cams 105s that you need to stay away from.

The L76 springs are good for low lift applications like this. 90 lb seat pressure, but stock spring rates instead of the high spring rate used on the LS6 springs. They will put no more stress on the timing chain than the 105s and they're cheaper. They do have less seat pressure, though.

I did however use the LS6 springs/retainers when I did my XP...can't say I had any issues with them but that's just me. They are cheap though.

After doing more searching and seeing your responses, it looks like the L76 springs are the way to go. The price is definitely nice too. Only $2.22 each on gmpartsdirect. I know I need the retainers, but what about the valve locks? Are they the same on the G8 and GP? They are cheap so I'm going to replace them and the valve seals while I'm there.

To summarize, I need 1.95 Yella Terra rockers, L76 springs and retainers, L67 valve locks and L67 viton valve seals, correct?

Thanks very much for the help guys!