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Instruction Sheets for Part Number HPE-HP97
Charts & Guides for Part Number HPE-HP97
Technical Articles for Part Number HPE-HP97
ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines HP97
Part Number: HPE-HP97
ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines
Crate Engine, GM 5.3L, LM7, 385 HP, Long Block, Internal Engine Balance, Aluminum Heads, Each
See More Specifications
Estimated Ship Date from Texas: Today Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
HP97
Part Type:
Product Line:
Summit Racing Part Number:
HPE-HP97
UPC:
00653517137211
Crate Engine Family:
Chevy LS
Actual Engine Displacement:
5.3L/325
Crate Engine Cylinder Head Material:
Aluminum
Engine Block Material:
Cast iron
Advertised Compression Ratio:
9.5:1
Assembled:
Yes
Engine Balance:
Internal
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:
No
Valve Covers Included:
No
Timing Cover Included:
No
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.
Notes:
Custom chassis dyno tune required. Headers and upgraded injectors recommended for optimal performance. 24 tooth reluctor wheel.
ATK High Performance Chevy LM7 5.3L 385 HP Long BLock Crate Engines
With ATK High Performance Chevy LM7 5.3L 385 hp long block crate engines expect big mid to upper end power and a noticeable idle. They were designed to be performance upgrades for a 1999-2007 Chevy truck LM7 or an LS swap in a hot rod.
Technical specifications include:
* Horsepower: 385+
* Torque: 390+
* Block: GM 5.3L iron LM7
* Bore/stroke: Up to 3.809 x 3.622
* Year range: 1999-2007
* Displacement: 323 c.i.d.
* Crankshaft: OEM GM 3.622 in. stroke internally balanced 24 tooth reluctor wheel .857 in. flange
* Connecting rods: OE GM forged powder metal 6.093 in. stock bolts
* Pistons: Hypereutectic dish
* Piston rings: Moly rings
* Compression ratio: 9.5:1 compression
* Camshaft: Hydraulic roller
* Camshaft specifications: Custom grind
* Camshaft bearings: Installed and clocked to OEM position
* Cylinder heads: OE aluminum 61.15cc 1.89/1.55
* Freeze plugs: Brass installed and sealed
* Rocker arms: OE powdered metal 1.7 ratio
* Oil Galley plugs: Installed and sealed
* Weight: 385
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