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Instruction Sheets for Part Number HPE-HP78
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Technical Articles for Part Number HPE-HP78
ATK High Performance Ford 302 375 HP Stage 1 Long Block Crate Engines HP78
Part Number: HPE-HP78
ATK High Performance Ford 302 375 HP Stage 1 Long Block Crate Engines
Engine Assembly, Stage 1 Crate Engine, Long Block, Ford, Small Block, 302, Each
See More Specifications
Estimated Ship Date: Nov 27, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
HP78
Part Type:
Product Line:
Summit Racing Part Number:
HPE-HP78
UPC:
00653517225772
Crate Engine Family:
Ford Windsor
Actual Engine Displacement:
5.0L/302
Crate Engine Cylinder Head Material:
Aluminum
Engine Block Material:
Cast iron
Advertised Compression Ratio:
9.5:1
Assembled:
Yes
Engine Balance:
External, 50 oz. imbalance
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
Stall Speed Rating RPM Range:
2,400-2,800
Supercharger Included:
No
Remanufactured:
Yes
Quantity:
Sold individually.
Notes:
Engine has front sump oil pan.
ATK High Performance Ford 302 375 HP Stage 1 Long Block Crate Engines
Bring your ride to life with ATK High Performance Ford 302 375 hp Stage 1 long block crate engines. These engines are based on the tried and true Ford 302 and are built to perform. 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.
Details and specs:
* 375 hp/380 lbs.-ft.
* Compression Ratio: 9.5:1
* ATK Aluminum heads
* Hydraulic roller cam
* Cast steel crankshaft 50oz external balance
* Hypereutectic pistons
* Seasoned OE roller block 1987-1995
* 4.040 in. bore x 3.000 in. stroke
* One-piece rear main seal
* Mechanical fuel pump provision
* Dual sump oil pan HP08, Front sump oil pan HP78
* Melling high volume oil pump
* Double roller timing set
Cylinder Heads:
* ATK aluminum cylinder heads
* 58cc chamber
* 2.02 in. intake/1.60 in. exhaust valves
* 185cc intake runners
* 1.6 aluminum roller rockers
Roller Cam specs:
* .512 intake/.512 exhaust
* 220 intake/224 exhaust duration @ .050 - 112-degree lobe separation
Recommended:
* 34-36 degrees total timing
* 13726548 firing order
* Left Hand inlet reverse rotation water pump (HP08)
* Right Hand inlet standard rotation water pump (HP78)
* Autolite 3923 spark plugs 0.035 gap
* 8mm Spark plug wires
* 2,400-2,800 Stall converter
* 1,500-6,500 dual plane intake
* 80 GPH Fuel pump
* 91 plus octane fuel
* 670 cfm carburetor
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