BluePrint BP306MAXCTC Ford 306 365 HP Bronco Edition Crate Engine

Description

Displacing 306 cubic inches of displacement, the BluePrint BP306MAXCTC Crate Engine in Bronco Edition carbureted form outputs 365 horsepower at 5,600 RPM. Generating 360 lb-ft torque at 3,800 RPM, this small-block Ford Windsor is built specifically for early Ford Bronco engine compartments. It equips vintage 4×4 builders with high-torque off-road propulsion straight from the freight skid.

A blueprinted cast iron Ford Windsor block forms the rigid structural foundation, bored 0.030-inch over and equipped with a leak-resistant 1-piece rear main seal. Inside resides an externally balanced rotating group: a cast steel crankshaft, forged connecting rods, and 9.5:1 hypereutectic pistons across 4.030-inch bores. Oil stays secure inside an external 50-ounce imbalance Bronco-specific oil pan preventing oil starvation on steep climbs.

Key Features of BluePrint BP306MAXCTC

Off-road restorers choose to buy BluePrint BP306MAXCTC crate engine packages to drop high-torque Windsor power into classic 4×4 trucks without crossmember clearance modifications. This turn-key configuration fits 1966 to 1977 Ford Broncos and classic Ford 4WD trucks.

• 600 CFM four-barrel carburetor comes calibrated for off-camber stability and crisp low-speed crawling throttle response.
• Dual-plane aluminum intake manifold maximizes low-end torque while promoting even fuel distribution across all eight cylinders.
• High-flow aluminum cylinder heads dissipate excess heat to suppress engine knock during slow rock crawling in hot weather.
• Hydraulic roller camshaft profiles reduce friction while optimizing valve lift for strong off-idle grunt and trail pulling power.
• Electronic distributor provides simple one-wire ignition hookup and steady spark delivery in extreme dust conditions.
• BluePrint BP306MAXCTC complete powertrain packages include a short-style water pump to clear tight Bronco radiator cores.
• Harmonic balancer arrives installed on the crankshaft snout to streamline front accessory installation.
• Bronco-specific rear-sump oil pan clears front Dana 44 axle housings during full suspension compression.

Dyno Profile Valvetrain Behavior

Dynamometer validation certifies 365 horsepower at 5,600 RPM and 360 lb-ft torque at 3,800 RPM across a broad 1,800 to 5,600 RPM range. Designed for 91-octane pump gasoline, the combusion chambers resist detonation under hot weather conditions. Camshaft timing provides 15 in-Hg manifold vacuum at 800 RPM, while internal oiling passages maintain 45 to 65 PSI when warm.

Chassis Compatibility Bellhousing Points

Built within compact Ford Windsor dimensions, the package clears tight early Bronco engine compartments without firewall trimming. The crank tail requires an external 50-ounce imbalance flexplate or flywheel to bolt straight to C4 automatics or NV3550 manual conversions. Factory motor mount positions eliminate clearance headaches around full-length exhaust headers and power steering shafts.

Break-In Instructions Usage Parameters

Prime the engine using a mechanical shaft tool through the distributor hole to protect internal surfaces before turning the starter. Use 10W-30 break-in oil rich in ZDDP zinc additives to lubricate internal bearing shells. This turn-key engine is not engineered for marine closed-compartment use, boost surpassing 6 PSI, or continuous alcohol fuel operation.

• Discard break-in engine oil and install a high-efficiency filter canister after the first 500 road miles.
• Inspect carburetor throttle linkage, fuel line fittings, and baseplate bolts every 3,000 miles of street use.
• Check ignition distributor advance weights, rotor contacts, and spark wires every 12 months or 12,000 miles.

Factory Guarantee Crate Contents

BluePrint protects your investment with a 30-Month or 50,000-Mile factory warranty against defects in components or machining. The wooden crate contains the complete engine, carburetor, intake manifold, distributor, plug wires, water pump, harmonic balancer, oil pan, valve covers, and dyno record sheet.