Check out this great post featuring our YT 6305 rockers as part of an epic 5.3 ROVER V8 engine rebuild by Matthew Poxon.
Pro Street Roller Rockers to Suit:
- Rover alloy V8 3.5L, 3.9L, 4.6L
- Buick Oldsmobile alloy V8 215ci
Designed for high revving street/strip applications. No other comparable product can compete with 600lbs* maximum open spring pressure whilst retaining factory size bolt-down hardware.
Manufactured and assembled in Australia using the highest quality materials and componentry consistent with those found in our Platinum race series.
Our wide range of true ratios allows you to achieve high lift without relying solely on your camshaft ... a trend many engine builders and racers alike are adopting to relieve the inertia on lifters and pushrods generated by aggressive and often violent ramp rates required to make big lift.
Ideal for harsh street and strip applications, these rockers have got what it takes to last!
Why Choose Pro Street?
- Built to withstand 600lbs* max open spring pressure
- Oversize full-complement caged bearings designed for oscillating (rocking) loads, paired with oversize precision ground trunnions to reduce friction.
- Intricately balanced CNC billet arms ensuring vital valvetrain stability - focusing attention on the harmony of the entire engine.
- Extruded from aircraft grade aluminium, perfect for dissipating excess top-end heat.
- Proven bolt-on shaft mount design that mounts both inlet/exhaust to common shaft, effectively increasing footprint and clamp load twofold without any further cylinder head modification.
- Various ratios available, catering for every camshaft grind. High ratios allow for additional lift on stock and aftermarket camshafts.
- Chrome moly steel hardened and ground roller tips of generous diameter (positively retained by internal circlip) preventing abrasion of valve tips and guides commonly seen with non-roller tip rockers. Allows for smoother, quieter operation. Maintains lash and reduces necessary and tedious engine maintenance.
Most of the applications the rockers fit under the covers. But there are many variants in rocker covers and baffles for the Rover V8/P6/MG/Land Rover/Buick that will need to be checked for clearance. You may require thicker rocker cover gaskets for clearance.
Tech Specs
| PART NO | YT 6305 |
| BRAND | PRO STREET |
| APPLICATION | STREET/STRIP |
| MAX OPEN SPRING PRESSURE | 600lbs |
| MAKE | BUICK |
| ENGINE | V8 |
| MOUNTING STYLE | MODULAR SHAFT |
| ROCKER ARM RATIO | 1.6 |
| STUD SIZE | 5/16" |
| ADJUSTABLE/HYDRAULIC | ADJUSTABLE |
| ROCKER ARM STYLE | FULL ROLLER |
| ROCKER MATERIAL | ALUMINIUM |
| ROCKER ARM BODY STYLE | CNC BILLET |
| ROCKER ARM NUT STYLE | ADJUSTER SCREW |
| MAX SPRING DIAMETER | 1.437" |
| INLET OFFSET | NO |
| QTY | SET OF 16 |
| NOTE |
TOTAL SYSTEM INCLUDES CRADLES, SHAFTS AND ARMS MAY REQUIRE CUSTOM PUSHRODS. |
