Product Summary

Long Block Crate Engine Type, 9.1:1 Compression Ratio

  • Block: Seasoned OE roller block 1987-1995
  • Bore/Stroke: 4.030” x 4.000”
  • Displacement (cu.in): 408
  • Crankshaft: Manley 4340 forged 58 tooth reluctor wheel
  • Rods: Manley 4340 forged H beam 6.125” ARP 8740 bolts
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Key Specs

Crate Engine TypeLong Block
Compression Ratio9.1:1
Engine Displacement289 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialCast Iron
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Need To Know

Made to Order

This custom item will ship when completed

Truck Shipment

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Return Policy

ATK Engines HP79 Details

Engine Specifications:

  • HP: 300
  • TQ: 336
  • Block: Seasoned OE roller block 1987-1995
  • Bore/Stroke: up to 4.060” x 3.000”
  • Displacement: 302CI
  • Crankshaft: OE 1 piece seal external balance 50oz
  • Rods: OE
  • Pistons: Hypereutectic 9.1:1 compression
  • Rings: Moly
  • Camshaft: Hyd. Roller
  • Cam Specs: 219/219 @50 .498in/.498ex 110LSA
  • Timing Chain: Double roller
  • Cylinder Heads: OE E5TE/E7TE 62cc 1.77/1.46
  • Rocker Arms: Stamped steel 1.6 pedestal mount rockers
  • Oil Pan: Front Sump
  • Oil Pump: Melling high volume

Recommended Components:

  • Balancer: External balance 50oz
  • Flexplate/Flywheel: External balance 50oz
  • Intake Manifold: Weiand dual plane #8020
  • Distributor: Pro billet RTR (with upgraded melonite or steel gear)
  • Water Pump: Early RH inlet standard rotation
  • Carburetor: Edelbrock 650CFM #1806
  • Fuel Pump: Holley mechanical 110GPH #12-289-11 or factory electric if installed in 1987-1995 mustang.
  • Spark Plugs: Autolite #24
  • Spark Plug Wires: 8mm

Engine Info:

  • Oil: Conventional / Non Synthetic 10W30
  • Oil Filter: Wix or K and N
  • Timing: 34-36 Degrees with vacuum port plugged on carburetor
  • Spark Plug Gap: .035”
  • Firing Order: 13726548
  • Octane: 91+
  • Stall Converter: Stock
  • Exhaust: 1 5/8 Headers

Disclaimer: The parts listed are ATK’s recommendations of parts to be used to obtain our power figures listed. Power figures can vary based on parts used by the end user. It is the customer’s responsibility to verify components will work for their application. Some modifications to the vehicle may be required using these and or other aftermarket parts. ATK reserves the right to substitute parts used in engines if necessary.

 

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

ATK Engines HP79 Specifications

KEY SPECS
MFG. Part #HP79
BrandATK Engines
Crate Engine TypeLong Block
Compression Ratio9.1:1
Engine Displacement289 cu. in.
Camshaft TypeHydraulic Roller
Cylinder Head MaterialCast Iron
Piston MaterialHypereutectic Aluminum
Carburetor IncludedNo
Intake Manifold IncludedNo
Distributor IncludedNo
Valve Covers IncludedYes
Cylinder Heads IncludedYes
Throttle Body IncludedNo
Timing Cover IncludedNo
Oil Pan IncludedYes
Water Pump IncludedYes
Harmonic Balancer IncludedNo
Flexplate IncludedNo
Flywheel IncludedNo
Air Cleaner IncludedNo
Spark Plugs IncludedNo
Spark Plug Wires IncludedNo
Computer IncludedNo
Wiring Harness IncludedNo
GENERAL
Combustion Chamber Volume62cc
Bore x Stroke (in)4.030" x 4.00"
Material TypeCast Iron
GTIN Code00653517227097
NotesEngine has front sump oil pan.
Sold in QuantityEach

Questions & Answers

1 Question • 1 Answer

What is the firing order for this engine/cam setup?

by Jimmy

• 4 months ago

1 answer

1 of 1 questions shown

Fitment

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