OUR BEST CRATE ENGINE VALUE DELIVERS ALL YOU EXPECT IN A POWERFUL SMALL-BLOCK! The most affordable Cheverolet Performance Small-Block crate engine is also our best seller – and it’s easy to understand why. The 350/290 Base Small-BIock features four-bolt mains for strength and makes a great economical alternative to rebuilding a tired, two-bolt main core. Use it to re-power your daily driver or drop it in your budget Camaro project! Inside the 350/290 Base are quality parts, including a camshaft and durable aluminum pistons that squeeze an 8.0:1 compression ratio. We offer the 350/290 in a base form, allowing you to add the induction and other accessories. That’s great for builders swapping over the intake manifold, carburetor and other components when re-powering a vehicle. Chevrolet Performance has all the components to build up the 350/290 Base into a high-performance, great-looking street engine, too – from an aluminum intake and carburetor (we recommend the 670-cfm Holley four-barrel, P/N 19170092 ) to the distributor, water pump and more. Save the time and hassle of rebuilding your old engine by ordering the 350/290 Base and finishing it to your own specifications. TECH SPECS Part Number: 12499529 / 19355658 Engine Type: Chevy Small-Block V-8 Displacement (cu in): 350 Bore x Stroke (in): 4.000 x 3.480 Block (P/N 10066034 ): Cast-iron with 4-bolt main caps Crankshaft (P/N 93426651): Nodular iron Connecting Rods (P/N 10108688 ): Powdered metal steel Pistons (P/N 93422884 ): Cast-aluminum Camshaft Type (P/N 3896962 ): Hydraulic flat tappet Camshaft Lift (in): .450 intake /.460 exhaust Camshaft Duration (@.050 in): 222° intake / 222° exhaust Cylinder Heads (P/N 93438649): Iron; 76cc chambers Valve Size (in): 1.94 intake / 1.50 exhaust Compression Ratio: 8.0:1 Rocker Arms (P/N 10089648): Stamped steel Rocker Arm Ratio: 1.5:1 Recommended Fuel: Regular pump Ignition Timing: 34° Total @ 4,000 rpm Maximum Recommended rpm: 5,100 Balanced: Internal INSTALLATION NOTES • Use neutral balance harmonic damper P/N 12551537 • Use internally balanced flexplate P/N 471529 for automatic transmission or flywheel P/N 14085720 for manual transmission(not included) • Power ratings based on tests with Holley 670-cfm carburetor P/N 19170092 (not included) • Does not accept Chevrolet Performance roller lifter assemblies • Designed for pre-1976 street vehicles or any off-road vehicle • Not intended for marine applications • See the Valve Covers section for selection of chrome, polished and aluminum valve covers • Pre-1986-style 2-piece rear main seal block • Recommended for use in vehicles with 6,000 GVW or less Chevrolet Performance Crate Engines include a 24-month or 50,000-mile/80,000-kilometer limited warranty.
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