As Steve mentions, the pictured valve springs and retainers are the Comp Cams Beehive pieces.  Here’s a different shot of them along with a link to a prior discussion.

 

http://www.y-blocksforever.com/forums/Topic3129-3-1.aspx

 

Lorena, Texas (South of Waco)

Because of what you said, less weight better revs, the US factory guys put these on most everything now. I don't see as much on the Jap stuff.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Yeah - the beehives are factory in my LS1 Z but I hadn't thought about there being a selection of them available for other app's  - until Ted showed me the set-up above.

 
 Steve Metzger       Tucson, Arizona

No secret, they have been using "Beehive" or Conical srings on the factory stuff for years, I just haven't seen it on a "Y" yet. The retainers look like late Vortec.

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Tim - This is one of those Y-Block "speed secrets" - I went digging through my files and found a reference note that says those are:

"Comp Cams #26915 "Beehive" springs - with #787-16 retainers. Requires trimming at the guide boss."  

I don't know if this link is still good -

www.compcams.com/beehive

A couple of end users have told me they are good for several hundred extra rev's without excessive seat pressure. Beehive springs have some interesting engineering aspects - like reducing the retainer size and weight - and variable harmonics coil by coil.

 
 Steve Metzger       Tucson, Arizona

Hey Ted,

What springs and retainers are you running there?

   God Bless.   Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias

Damn! Those are pretty .. !!! Pricey I'll bet ... ?

Doing Fords for 45 years. '56 Customline Victoria

E.J. in Havana FL

Previous link on the subject:

http://www.y-blocksforever.com/forums/Topic6082-5-1.aspx

 

Dove Manufacturing roller tipped rockers

 

 

Rocker Arm Specialist roller tipped rocker arm setup

Lorena, Texas (South of Waco)

You can install roller rockers. They will be a higher ratio and should increase upper end power. On a stock build you probably won't feel much difference, if any at all. The roller tip will reduce friction and reduce valve guide wear. Dove, and The Rocker Arm Specialist are two companies I know of which make roller rockers for the Y.


Lawrenceville, GA

Y-Guy Greg        Welcome to the site. The "Y" shaft rockers are very

               efficient, especially for street use, if they are in good condition.

                       The roller's are better for high RPM use and I'm sure

               some of the others, on the site,will chime in and give you their

               2-cents worth.

                       It's ironic, but one of the manufactors of "Y" rollers

               is DOVE.               Hope this helps.

                                             Bill

Bill

Pelham,Al