Rockers? Is it a must?

[scbh81]

hello YT,

Finally after a long wait i am going to get my 10psi pulley installed this week. My question is do i have to change the rockers as well? Does the XU6 come with better rockers than the normal L67?
as much info would be very helpful
Cheers in advance
Sarana

[chargedvx6]

The XU6 is mechanically identical to any other L67 from that model year except for the larger intake snout, HSV headers and larger cat back as well as the slightly different calibration to account for these parameters.

To answer your ??? though, changing rockers is not needed at all. It is good to do as a stepping stone to more extensive mods but not the be all and end all. Fitting 1.9/ 1.95 YT rockers will actually lose a tad of bottom end power but will give a much broader spread throughout the rev range.

They have excellent re sale too

[MICKY.D]

HEY,

The XU6 does not come with better rockers than the normal L67.
All Ecotec V6's have the same rockers.
True Roller rockers are a great upgrade for you if increasing boost, i would recommend a mixed ratio of 1.9/1.95, using the higher ratio on the exhaust will help with getting the gases out better so you get a better fuel burn.

Part number YT 6666

Cheers
Mike
YT