Chevrolet Performance ZZ502/502 Base 508 Hp

Replaces 19419002

A DIY FOUNDATION FOR BIG TORQUE! We offer the ZZ502/502 Base crate engine for the builder who wants the super-strong bottom end and high-flow aluminum oval-port cylinder heads, but also wants to finish the engine his or her way. It's a great foundation and it's up to you to make the most of it! Like our complete ZZ502/502 Deluxe crate engine, a set of high-flow aluminum oval-port cylinder heads and a hydraulic roller camshaft designed to support low-rpm torque production enable it to hit the 500 lb.-ft. mark by approximately 2,500 rpm and hold it above the mark until around 5,000 rpm. It also features a latest-generation block casting with four-bolt main caps and an all-forged rotating assembly for exceptional strength and durability. We rate the ZZ502/502 Base engine at 508 horsepower and 580 lb.-ft. of torque when it is finished with Chevrolet Performance aluminum intake manifold P/N 12363406 and Holley 870-cfm carburetor P/N 19170094. The other parts you need to complete the engine - including chrome dress-up parts - are available from Chevrolet Performance. TECH SPECS Part Number: 19331576 Engine Type: Chevy Big-Block V-8 Displacement (cu in): 502 Bore x Stroke (in): 4.470 x 4.000 Block (P/N 19170540): Cast-iron with 4-bolt main caps Crankshaft (P/N 10183723): Forged steel Connecting Rods (P/N 19170198): Forged steel, shot peened Pistons (P/N 12533507): Forged aluminum Camshaft Type (P/N 12366543): Hydraulic roller Camshaft Lift (in): .527 intake / .544 exhaust Camshaft Duration (@.050 in): 224° intake / 234° exhaust Cylinder Heads (P/N 19331425): Aluminum oval port; 110cc chambers Valve Size (in): 2.250 intake / 1.880 exhaust; stainless steel Compression Ratio: 9.6:1 Rocker Arms (P/N 12675724): Stamped steel Rocker Arm Ratio: 1.7:1 Recommended Fuel: Premium pump Ignition Timing: 32° Total at 4,000 rpm Maximum Recommended rpm: 5,800 Balanced: External Flexplate (P/N 10185034): 14" INSTALLATION NOTES

• Clutch linkage bosses are now drilled and tapped. When using cast-iron exhaust manifolds, lower head bolts may need to be replaced with bolts with shorter heads, for clearance
• 502 engines now have a mechanical fuel pump boss! NOTE: There is NO fuel pump lobe behind the boss.
• Comes with an externally balanced 14" automatic transmission flexplate. Use flywheel P/N 14096987 and 11" clutch assembly for manual transmission applications
• Designed for pre-1976 street vehicles or any off-road vehicle
• Not intended for marine applications

NOTE: Distributor with melonized steel gear MUST be used with long-blocks and Partial engines with steel camshafts, or engine damage will occur.