ATK HP99F Ford 302 Stock Drop-In Long Block Crate Engine

Description

Repower vintage Ford passenger cars with the ATK HP99F Crate Engine in stock drop-in long block dress. Displacing 302 cubic inches, this small block Ford Windsor V8 outputs 220 horsepower at 4,600 RPM and 300 lb-ft torque at 2,600 RPM. Engineered as a standard-output replacement, it restores factory performance to classic trucks and rear-wheel-drive sedans.

A precision-machined cast iron Ford Windsor block provides structural strength, featuring a modern 1-piece rear main seal to stop lubricant drips. The rotating group pairs a cast iron crankshaft with stock-length forged steel connecting rods and 9.0:1 cast aluminum pistons inside 4.000-inch bores. Stroke measures 3.000 inches, balanced with an external 50-ounce imbalance and anchored with a standard-capacity steel oil pan.

Key Features of ATK HP99F

Fleet owners buy ATK HP99F crate engine units to replace tired original Ford engines without custom vehicle modification. This direct-replacement package repowers classic Ford F-150 pickups, Broncos, Mustangs, and vintage station wagons.

• Cast iron cylinder heads retain factory thermal expansion rates and deliver exceptional long-term valvetrain durability.
• 1.78-inch intake and 1.45-inch exhaust valves maximize low-end fuel velocity across everyday driving speeds.
• Hydraulic flat-tappet camshaft provides smooth valve timing that ensures quiet valve action and reliable operation.
• 0.398-inch lift camshaft profile optimizes low-end pulling power across an accessible 1,200 to 4,800 RPM operating range.
• 1.6:1 ratio rocker arms transfer camshaft lift smoothly without excessive wear on valve stem tips.
• ATK HP99F stock drop-in blocks include a single-row timing chain set to preserve factory camshaft alignment.
• Front timing cover and stamped steel valve covers arrive installed to seal internal components during installation.
• Standard dual-sump oil pan clears factory Ford frame crossmembers and steering linkages in vintage chassis.

Dyno Profile Valvetrain Behavior

Dyno testing confirms 220 brake horsepower at 4,600 RPM supported by 300 lb-ft torque at 2,600 RPM. This Windsor V8 operates on regular 87-octane pump gasoline without spark knock. The conservative camshaft profile maintains 18 in-Hg manifold vacuum at 650 RPM to support power brake systems. Hot operating oil pressure settles firmly between 40 and 60 PSI across standard highway speeds.

Engine Bay Bellhousing Clearance

External envelope dimensions follow traditional Ford Windsor architecture, seating straight between vintage shock towers without chassis cutting. The crankshaft flange requires a 50-ounce imbalance flexplate or flywheel to mate with Ford C4, C6, or AOD transmissions. Motor mount points accept factory Ford frame perches, clearing manual steering gearboxes and stock exhaust manifolds.

Break-In Protocol Maintenance Limits

Pre-lubricate the engine using a mechanical pump priming tool to wet internal bearings before turning the starter motor. Fill the crankcase with 10W-30 conventional break-in lubricant with high zinc additives for flat-tappet protection. This stock replacement engine is not engineered for marine bilge setups, forced induction boost exceeding 3 PSI, or competition nitrous use.

• Discard the break-in motor oil and spin on a fresh filter element after the first 500 operating miles.
• Inspect intake manifold bolts and water pump hose connections every 3,000 miles of street operation.
• Examine ignition timing marks and check accessory belt tension every 12 months or 12,000 miles.

Warranty Statement Shipping Inventory

ATK covers this Windsor power plant with a 12-Month limited warranty against defects in materials and craftsmanship. The secure wooden crate holds the assembled long block, cast iron cylinder heads, timing cover, oil pan, valve covers, instruction guide, and dyno test sheet.