SLP's 1.85 RATIO ALUMINUM ROCKER ARM PACKAGE is designed as a true bolt-on replacement for LS3 engines. These rockers require NO valve cover or cylinder head modifications. OEM-quality aluminum construction and a roller bearing trunnion results in a 10% increase in valve lift over the stock 1.7 ratio rocker arms and gains of up to 12 horsepower over stock. Retainers, keepers and SLP high-lift valve springs are included to prevent coil bind. Includes all necessary installation hardware and detailed instructions.
The all-new ZL427 Gen IV LS7-based aluminum short block builds on the phenomenal success of our original ZL402 short-blocks. This new package uses the same race proven internals as our short-block predecessor but features the all-new LS7 block. Designed primarily for use in any late-model GM LS Car/Truck/SUV, it makes a great choice for most street rods/muscle-cars.
The all-new ZL427 Gen IV LS7-based aluminum short block builds on the phenomenal success of our original ZL402 short-blocks. This new package uses the same race proven internals as our short-block predecessor but features the all-new LS7 block. Designed primarily for use in any late-model GM LS Car/Truck/SUV, it makes a great choice for most street rods/muscle-cars
