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Ls1 5.7 flycut4/25/2023 ![]() Our '98 automatic Z28 previously went a best of 10.51 at 125 mph with a Magic Stick 3 and stock unported 241 casting cylinder heads." To that end, we are now introducing the fourth revision to our "Magic Stick" line of camshafts, designed to be the largest cam out there for 346ci applications without having to perform any modifications to provide adequate piston to valve clearance. By utilizing a set of our PRC Stage I heads, the enthusiast gets a set of brand-new, CNC-ported castings that will support significant horsepower gains. With the stock displacement LS1, cam-only and heads/cam packages are extremely popular. ![]() ![]() Although there are all manners of aftermarket heads available on the market to satisfy the hard-core racers, the average enthusiast is more focused on maximizing engine performance on a budget. Although the trend in the industry is to "step-up" to larger cubic inches by either stroking the LS1 or LS2, the budget-conscious stock cube LS1 owner still wants a magic bullet to maximize the potential of the engine at the most reasonable cost.Īccording to Jason Mangum, co-owner of Texas Speed, "In 2004 we formed Precision Race Components to fill a void in the market for low-cost, high-quality factory-based ported heads and related valvetrain components. The aftermarket has stepped up and supplied almost every imaginable grind of camshaft along with a far-reaching palate of factory and ground-up cylinder head designs. Within the LS1 community, nothing is more tried and true than finding the "right" camshaft or bolting on a set of ported heads to transform the little 346ci engine into a truly beastlike, mega cube performer. Although phased out of production in 2004 and replaced by the evolutionary 364ci LS2, the LS1 continues to receive its fair share of attention, along with cutting edge research and development. Seeing that the latest mouse motor displaced 346 ci, the LS1 was right at the magical mark of 1 hp per cubic inch. Initially put into the Corvette C5 and later transplanted into almost every GM performance vehicle, the Corvette spec LS1 put out 345 hp at 5,600 rpm and 350 ft-lbs of torque. Before the latest GM offerings in the small-block lineup a clean-slate design small-block was introduced to the public in 1997 as the LS1. Starting with American bearing steel, they are precision machined on a Landis 3LB CNC grinder with CBN diamond wheels for unmatched quality.As a country and a society that lives for the latest and greatest technological advances, it's often helpful to reflect back on our progress. The Stage 4 cams often require no changes but can be degreed slightly different as needed. Although piston to valve clearance should always be verified, the Stage 2 and 3 cams often allow for additional cylinder head milling. Careful design guarantees the cams can be installed with minimal difficulty. The lobes are designed for stability at high rpm with the spring pressures found in quality. This ensures maximum performance and gives you the idle you are looking for. Summit Racing™ Pro LS Automotive cams are affordable and designed in stages with very specific cam timing for each individual application in cathedral and rectangle port versions. Valve Lift with Factory Rocker Arm Ratio:Ĭamshaft features base circle of 0.705 int./0.717 exh. Intake Valve Lift with Factory Rocker Arm Ratio:Įxhaust Valve Lift with Factory Rocker Arm Ratio: Largest cam that fits LS3 with unmilled heads, but always check piston to valve clearance and degree if necessary. State-of-the-art cam lobe designs to pull strongly past 7000 rpm with as little as 150 lbs. Rowdy idle and will out horsepower any cam in it’s range. Ultimate street/strip cam for a car or truck with the factory intake manifold design. Not intended for use with VVT or AFM and flycutting the pistons may be required. Summit Racing™ Pro LS Automotive Camshafts
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