jb racing in Floida USA
They take standard style push rods
jb racing

Cool and they do lifters as well i see.

yes I got thoose as well

These look to be VERY nice, but it's worth noting that these are roller TIP rockers only as they still use a stock shaft & they are bushed, unlike the Yella Terra rockers which are FULL ROLLER rockers.
Full roller means that they use a roller bearing in the rocker itself which rides on a hardened, but smaller diameter shaft.

On the upside, these should be more affordable than the Yella Terra's, but at about $660 Au, they are really not. I think that both Lemonhead & I paid a little over $100 Au more for the Full Roller Rockers which included new shafts & stands.

To be fair, the Yella Terra rockers require custom pushrods, but the maker of these rockers highly recomends the use of a new shaft & new, stock type, adjusting screws & nuts. All of these things are extra cost items.

These ones come in colours too, which sure looks pretty.


The tappets are very nice too, but the $300 US [$400 Au] price tag has made me stop & think.

Quote:

This type of arrangement is almost mandatory on big lift big rpm A series.
The only place the little race A series is fragile is in the design and wall thickness of the original rocker shaft. Its a thin wall tube that has plugged ends and allows oil to be fed to the rocker bores. Over time the mounting posts can soften and deform causing the rocker to bind simply because the rocker shaft has become out of round. The extra lift and load of big cams doesnt help.
bobs1200 - watch this when assembling your top end and check that you have zero rocker bind once the posts are torqued up. I mention this particularly because your new rockers are bushed.
If there is a problem you might have to use a little loctite on the post bolts and reduce the torque setting on individual bolts to ensure no deformation of the rocker shaft OD.
If your pic is recent, now is the time to machine up some rocker spacers to ensure good oil pressure at the rocker bores. They replace the end float springs in your pic and when set up right ensure the centreline of the roller is directly over the centreline of the valve head. Of course its all extra work!
This little build tip has been a very cheap and effective solution to the problem.
This only applies to high lift high load high rpm builds.