Barry Kluczyk
September 28, 2010

Technical Specifications

Man O' War 460 Limited Edition
Engine typeOHV V-8; iron block with aluminum heads
Displacement460 cubic inches
Compression ratio11.1:1
Horsepower (advertised)600
Torque (advertised)575
Cylinder blockHigh-density cast-iron
Main bearing capsFour-bolt splayed; billet steel
Deck height9.500 inches
Cylinder bore4.155 inches
Stroke4.250 inches
Crankshaft4340 forged steel
Connecting rods4340 forged steel H-beam
PistonsForged aluminum with coated skirts
Piston connecting pinsFull floating
CamshaftHydraulic roller; 0.669/0.676-inch lift; 254/260-degree duration; 110 LSA
Timing systemDouble-row chain
Cylinder headsWorld Products 18-degree; 225cc intake runners
Combustion chamber72cc
Valves2.055-inch intake; 1.600-inch exhaust (stainless steel)
ValvespringsDual 125-pound per inch
Rocker armsAluminum roller; 1.72 ratio
Pushrods4340 forged steel, one-piece (used with guides)
Intake manifoldSingle-plane high-rise
Carburetor1,050 Dominator (4500 series)
DistributorHEI-type
MiscellaneousSpark plugs, plug wires, oil pan, polished valve covers, SFI balancer included

Dyno Test
(engine tuned with 30 degrees total timing)
RPMLB-FTHP
3,500562374
3,600568390
3,700571402
3,800572414
3,900573426
4,000577439
4,100583455
4,200589471
4,300595487
4,400601504
4,500607520
4,600611536
4,700616551
4,800618564
4,900618577
5,000616587
5,100614596
5,200611602
5,300606611
5,400600617
5,500593621
5,600585623
5,700576625
5,800569628
5,900560630
6,000553632
6,100543631
6,200532628
Peak numbers in bold.

The Aluminum Option
Aftermarket aluminum engine blocks have traditionally been left to the domain of professional racers, thanks to prices far greater than their weight savings. World Products is changing the status quo, however, with lower-cost aluminum castings, including an alloy version of the Man O' War block. That is due to an innovative machining process that World Products says dramatically shrinks the time and effort involved in finishing a rough casting.

The aluminum Man O' War saves about 100 pounds when compared to the weight (including main caps) of the iron version and adds about $2,000 to the price of a crate engine. That is only about a 15-percent premium on the cost of the crate engine described in our main story. A 15-percent premium may be the cost, but to paraphrase a popular advertising campaign, the exotic allure and "wow" factor of an aluminum Windsor block is priceless.

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