Edelbrock is stepping up big time in the LSX arena with a new LS Square port head aimed directly at the top echelons of LS drag racing, the Victor LS-R, and a new kick ass L92-style head, the Victor Jr. LS Pro-Port, that offers some upgrades over the stock GM casting. These new offers really signal that Edelbrock is ready to be at the forefront of the next-gen GM small block with not only a new hot street/strip head, but with a max-effort race head that could come to be the highest performance LSX racing head available.
Edelbrock new LSR Race Head
This new LSR head is no joke. Built with the GM LSX block in mind, it is already configured with the extra head-bolts that come standard with the GM Performance block, although they are not required if you are using a non-LSX block. The LSR is a canted valve head, offering maximum power potential and flow rates - if you can believe this, of as much as 450-cfm or even more, in fully ported configurations.
The head uses the GM SB2 valve cover footprint because of the canted valve design, although the stock exhaust port pattern is retained. These are Edelbrock PRO port heads, meaning that seats and guides are included (but not installed) but you'll need to have your head porter do the CNC porting magic to make the heads rock and roll for your full-race LSX engine.
Edelbrock's Victor Jr LS Head
The Victor JR LS head is billed as an upgrade to the GM L92 head, either for current LS3 or L92 head owners, or for those who want to upgrade from a standard cathedral port head. It features the L92 raised square port footprint, but with a LS7 12.2-degree valve angle, and dual intake bolt patterns for both LS7 and L92 intake ports. Because it's a PRO port design, it can be ported for either intake design.
The best part is that Edelbrock has engineered this head for use with not a costly shaft system, but for LS7 1.8:1 factory rocker arms, and .200-inch longer valves, so you can install beefy valve springs. Of course, for serious engines, racers may use high end Jesel, T&D, Comp or Crane shaft rockers, but it's nice to know you can use LS7 rockers for cost-savings. All in all, the Victor Jr head will prove to be a great upgrade for a factory LS3/L92 casting.
For more information, watch
Edelbrock's website.
