Overview

ATK High Performance GM 350 Vortec 290 HP Stage 3 Long Block Crate Engines

ATK High Performance GM 350 Vortec 290 hp Stage 3 long block crate engines are ideal replacements for worn out Chevy small block (commonly referred to as SBC or small block Chevy) motors. They are designed with matched components for reliable performance with extra "go" power. These complete dressed engines are engineered for those wanting to drop the engine into their project, fire it up, and go! So, save time, prevent headaches, and get out there and enjoy your custom performance ride sooner when you order your own ATK High Performance GM 350 Vortec 290 hp Stage 3 long block crate engine.

More product details, items, and notes include:

* Electric fuel pump required
* OE block bored to 4.060 in. diameter with 2-bolt mains and a one-piece rear main seal
* OE reground crankshaft with a 3.480 in. stroke
* OE powder metal 5.7 in. length connecting rods
* Hypereutectic 9.4:1 compression ratio pistons
* Moly piston rings
* Hydraulic roller camshaft (191/194 duration at 0.050 in. lift, 0.414/0.428 in. lift, 111 LSA)
* Cast iron Vortec cylinder heads with 64cc combustion chambers, 165cc intake runners, and 1.94 in./1.50 in. valves.
* Stamped steel 1.5 ratio rocker arms
* Single roller timing set
* 5- quart oil pan (will not fit Chevelle with steering behind crossmember, some Corvette, and 1962-67 Chevy II models)
* Melling standard volume oil pump
* Valve covers
* Flexplate
* ATK HP dual plane intake manifold
* Distributor (HEI-style)
* Cast iron long-style water pump
* Front Powerbond balancer (internally balanced)
* Pioneer externally balanced 168-tooth flexplate
* Quick Fuel Brawler 670 cfm carburetor
* Autolite spark plugs (605) with 8mm wires
* This is a standard listing; ATK reserves the right to substitute parts used in engines if necessary

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