Engines and Components› Engines, Blocks and Components

ATK ENGINES

BMW 6L45 AUTO 6-SPD

$7,350.56

SKU: A040 T9405EA

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Description

Chevrolet 350 Small Block base engine from ATK High Performance. Delivers 345 HP and 400 TQ. Features an OE block (4-bolt main, 1-piece seal, 1987-2000 compatible), 4.040 x 3.480 bore/stroke, 350 ci displacement, OE reground crankshaft (external rear, internal front balance), OE powder metal 5.7” rods, hypereutectic 9.1:1 compression pistons, moly rings, hydraulic roller camshaft (220/224 @.050”, .495”/.502” lift, 110LSA), double roller timing chain, ATK cast iron cylinder heads (76cc/165cc, 1.94”/1.50” valves), and stamped steel 1.5 ratio rocker arms. Includes a rear sump 5-quart oil pan and Melling high volume oil pump. Oil pan has fitment restrictions for some Chevelles (steering behind crossmember), Corvettes, and 1962-1967 Chevy II's.

Fitment

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Specifications

BrandATK ENGINES
Part NumberA040 T9405EA

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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