Overview
ATK High Performance GM 540 660 HP Stage 3 Long Block Crate Engines
Smash the competition or terrorize the street with ATK High Performance GM 540 660 hp Stage 3 long block crate engines. They are built around a rock-solid bottom-end and a free-breathing top-end to create a beast that is capable of 660 hp and 690 ft.-lbs. of tire-shredding power. ATK hand-assembles each of these mills out of top-of-the-line components to make them strong enough for the track, but reliable enough for street use, so you get the best of both worlds.
ATK GM 540 660 hp Stage 3 crate engines include:
* Dart Big M block
* High performance aluminum cylinder heads
* Intake manifold
* Carburetion
* 4340 forged steel crankshaft and H-beam connecting rods
* Forged pistons
* Hydraulic roller camshaft
* Cam lift- .640 int./.640 exh.
* Cam duration @ 0.50- 243 int./249 exh.
* 10.0:1 compression
* Distributor, plug wires, plugs
* Valve covers
* Timing cover and timing set
* Oil pan, pump, and pickup tube
* Water pump
* Front damper and flexplate
