There is no replacement for displacement. FRPP 521cid crate engines packs 580HP and 600ft./lbs. of torque! The Super Cobra Jet aluminum cylinder heads come complete with stainless steel swirl polished valves (intake 2.20" and exhaust 1.76") and dual-valve springs, retainers, keepers and seals. A solid roller mechanical camshaft provides significant horsepower increases above 3500 RPM and good low-end torque. Also includes a multi-index timing chain set, push rods, roller rocker arms, heavy duty HV oil pump, pickup tube, high-performance oil pan, Ford Racing valve covers, aluminum front cover and water pump, high-performance damper, flywheel, spark plugs, related long block engine parts and 4-Bolt block (.030'' over).
Features and Benefits:
580 HP @ 5750 RPM
600 ft./lbs. of torque @ 4500 RPM
10:1 compression ratio (nominal)
Forged aluminum dished pistons
Forged H-beam connecting rods
Mechanical roller camshaft (.640'' lift I/E; 254° intake and 258° exhaust duration @ .050")
High Performance T-sump oil pan
MSD Distributor with Bronze Gear
Cast nodular iron crankshaft
4-bolt main siamese bore block
Super Cobra Jet aluminum cylinder heads
Victor single plane intake manifold(Dominator flange)
