ATK HP08C Ford 302 350 HP Stage 3 Aluminum Head LB Long Block Crate Engine

Description

Eliminate tired small-block engine failures with the ATK HP08C Ford Crate Engine 302 Stage 3 package. Engineered for performance Mustangs, street rods, and vintage Ford coupes, this 5.0-liter Windsor V8 produces 350 brake horsepower at 5,500 RPM. High-flow aluminum cylinder heads, a performance four-barrel carburetor, and complete electronic ignition furnish crisp throttle response and potent street manners.

Technicians select seasoned Ford cast iron blocks, precision align-honing main journals before decking the block flat. A cast nodular iron crankshaft rotates with external 50-ounce imbalance weighting inside a one-piece rear main seal. Forged 5140 steel connecting rods connect to 4.000-inch hypereutectic pistons traversing a 3.000-inch stroke. A 9.5:1 compression ratio matches lightweight aluminum cylinder heads. Oil pan volume holds 5.0 quarts. Dry long block weight totals 425 lbs.

Key Features of ATK HP08C

Car builders buy ATK HP08C crate engine packages to drop high-breathing aluminum heads and full carbureted induction into restomod engine bays. This turnkey long block installs flush into classic Ford chassis using stock motor mount pads.

• High-flow aluminum cylinder heads reduce front-end weight while boosting intake charge velocity.
• 4.000-inch bore iron block ensures authentic Windsor architecture for vintage chassis swaps.
• OE hydraulic roller camshaft profiles generate aggressive valve lift without excessive valvetrain wear.
• External 50-ounce harmonic balancer stabilizes the rotating group across high-RPM operation.
• Performance four-barrel carburetor meters fuel uniform across rapid acceleration demands.
• Dual-plane aluminum intake manifold optimizes air-fuel distribution into combustion bowls.
• Electronic distributor and plug wires generate strong ignition fire across all cylinders.
• Balanced ATK HP08C rotating parts cancel destructive harmonics under full-throttle track loads.

Dynamic Aluminum Head Dyno Output

Operating within a lively 2,200 to 5,800 RPM power band, this aluminum-head Windsor engine produces 350 brake horsepower and 360 lb-ft torque on 91-octane pump gasoline. The hydraulic roller camshaft profile specifies 220 degrees intake duration at 0.050-inch lift with 0.495-inch valve lift. Manifold vacuum registers 16 in-Hg at an 800 RPM base idle. Hot engine oil pressure runs between 45 to 65 PSI, maintaining hydrodynamic lubrication across main journals and high-revving valvetrain hardware under aggressive acceleration.

Engine Bay Bellhousing Drop Clearances

Engine builders mate this Windsor long block straight to classic Ford six-bolt bellhousings on C4, AOD, and manual transmissions. The included 50-ounce external balance flexplate accommodates automatic converters. Factory mount locations align flush with stock Mustang subframe perches. The front-sump oil pan clears steering linkages and suspension crossmembers without sheet metal work.

Break-In Protocol Maintenance Duty Limits

Pre-lube engine oil galleries with high-zinc 10W-30 mineral oil using a mechanical primer before ignition engagement. Fill and bleed coolant through the thermostat housing to eliminate hot spots. This engine package is not engineered for nitrous oxide injection, supercharger boost past 6 PSI, or raw marine sea water cooling.

• Drain break-in motor oil after the first 50 road miles.
• Renew synthetic or conventional motor oil every 3,000 miles.
• Inspect ignition timing, spark plugs, and carburetor adjustments every 12 months.

Warranty Coverage Pallet Crate Manifest

A 12-Month limited warranty protects against material and manufacturing defects. The banded wooden pallet crate contains the long block, aluminum cylinder heads, intake manifold, carburetor, distributor, spark plugs, wires, water pump, harmonic balancer, flexplate, dyno test certification sheet, and startup guide. Components ship sealed against oxidation.