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May 26, 2026ATK High Performance GM 350 330 HP Stage 3 Long Block Crate Engines HP291PC
$2,929.00
Crate Engine, GM 350, Stage 3, Long Block, Internal/External Engine Balance, Cast Iron Heads, Chevy, 350, Each
Overview
ATK High Performance GM 350 330 HP Stage 3 Long Block Crate Engines
Give new life to your ride with ATK High Performance GM 350 330 hp/380 lbs.-ft. Stage 3 long block crate engines. They are based on the tried-and-true small block Chevy and are built to perform right out of the box. ATK hand-assembles and balances each engine using top-quality parts to help them produce awesome power. Whether you are replacing an older, tired engine or just looking for a little more performance, ATK has you covered.
Stage 3 long block crate engines include:
* Handpicked, OE remanufactured blocks
* ATK cast iron cylinder heads
* 76cc combustion chambers
* 165cc intake runners
* 1.94 in./1.5 in. valves
* ATK dual plane Intake manifold
* OE crankshaft
* OE 5.7 in. powder metal connecting rods
* Hypereutectic flat-top pistons
* Hydraulic flat tappet camshaft
* .465 int./.488 exh. cam lift
* 224 int./234 exh. cam duration at 0.50
* 9.1:1 compression
* Distributor, spark plugs, and plug wires
* Valve covers
* Timing cover and double roller timing set
* Oil pan, pump, and pickup tube
* OE style long water pump
* Balancer and 168 tooth flexplate








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