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Instruction Sheets for Part Number HPE-HP94
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Technical Articles for Part Number HPE-HP94
ATK High Performance GM 383 Stroker 415 HP Stage 1 Long Block Crate Engines HP94
Part Number: HPE-HP94
ATK High Performance GM 383 Stroker 415 HP Stage 1 Long Block Crate Engines
Crate Engine, GM 383 Stroker Stage 1, Long Block, Internal/External Engine Balance, Aluminum Heads, Each
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Estimated Ship Date from Texas: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
HP94
Part Type:
Product Line:
Summit Racing Part Number:
HPE-HP94
UPC:
00653517136580
Crate Engine Family:
Chevy Small Block
Actual Engine Displacement:
6.3L/383
Crate Engine Cylinder Head Material:
Aluminum
Engine Block Material:
Cast iron
Advertised Compression Ratio:
9.7:1
Assembled:
Yes
Engine Balance:
Internal/External
Cam Style:
Hydraulic roller, OE roller
Rear Main Seal Style:
1-piece
Intake Manifold Included:
No
Cylinder Heads Included:
Yes
Carburetor Included:
No
Throttle Body Included:
No
Distributor Included:
No
Oil Pan Included:
Yes
Valve Covers Included:
Yes
Timing Cover Included:
Yes
Water Pump Included:
No
Harmonic Balancer Included:
No
Flexplate Included:
No
Flywheel Included:
No
Air Cleaner Included:
No
Spark Plugs Included:
No
Spark Plug Wires Included:
No
Computer Included:
No
Wiring Harness Included:
No
Supercharger Included:
No
Remanufactured:
Yes
Quantity:
Sold individually.
ATK High Performance GM 383 Stroker 415 HP Stage 1 Long Block Crate Engines
Give your ride the extra twist only a stroker can deliver with ATK High-Performance GM 383 Stroker 415 hp Stage 1 long block crate engines. These engines feature quality components and professional assembly to give your car or truck the kick it needs. They produce up to 460 ft.-lbs. of torque—that's enough to get you rolling in a cloud of tire smoke!
ATK GM 383 Stroker 415 hp Stage 1 long block crate engine specs:
* Seasoned OE 4-bolt main roller block
* 4.040 x 3.750 bore/stroke
* 383 c.i.d. displacement
* Scat nodular iron crankshaft (3.750 in. stroke; one-piece; externally balanced rear/internal front)
* Scat 4340 forged I-beam connecting rods (5.700 in.) with ARP bolts
* Hypereutectic pistons
* Moly piston rings with 9.7:1 compression ratio
* Hydraulic roller camshaft with 220/224 duration at 0.050, 0.528 in./0.536 ex. lift, 112LSA
* Installed camshaft bearings clocked to OEM position
* ATK high-performance aluminum cylinder heads with 2.02/1.60 ex. valves
* Installed and sealed brass freeze plugs (oil galley plugs also installed and sealed)
* Billet aluminum 1.6 ratio rocker arms
* 5 qt. OE oil pan
* 350 lbs.
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