Roller rocker question

[hollywoodstang]

I noticed today when i was putting new rockers in my friends car the B351 rockers are little different...

Is there any difference between old FMS svo B351 rockers and new ford racing B351 rockers?

I see that new ford racing has u-clips on each side of the rockers and little more longer from the side...but the old FMS svo ones do not have these clips and they are more "Flush" on the sides with the rockers.

What is the difference in performance? or is there any difference at all?

I got the old SVO ones. i want to know why this is???

Thanks fellas

 

[illwood]

From the way you describe them, it sounds like the old SVO rockers had a press fit on the pivot shaft on the rocker. That would prevent it from sliding out axially. The newer Ford Racing rockers sound like they use circlips to keep the pivot shafts in place.

 

[hollywoodstang]

Thank you for the info.