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CYLINDER HEADS - WORLD PRODUCTS IRON


2013 World Products Iron Catalog 5.1MB file

MERLIN - BB CHEVY


OVAL & RECTANGULAR PORT IRON CYLINDER HEADS

World’s MERLIN series has earned a reputation as the performance industry standard for Big Block Chevy power. The cast iron MERLINS are available in both oval and rectangular port designs, with intake ports offered in 269cc, 320 and 345cc configurations. Choose the port size that will provide the optimum balance of flow and velocity for your engine combination. They are available bare or in complete assemblies that feature multi-angle valve jobs, Manley stainless steel valves and valve springs matched to camshaft requirements.

World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. Assemblies include valves, springs, retainers, keepers, chrome moly screw-in studs, and hardened steel guide plates. These heads are also available in Marine trim, equipped with ultra high temperature Inconel exhaust valves and other special components.

TECHNICAL SPECIFICATIONS
Casting ID Numbers: WOR-043B (345cc) WOR-043D (320cc) WOR-043D (269cc)
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides: Integral cast iron
Spring Seats: Machined for 1.560" (can machine to 1.625")
Valve Diameter: 2.300" intake, 1.880" exhaust (11/32" stem)
Guide Plates: Stock (for best fit use World #702354-8)
Rocker Arm Studs: Screw-in style
Rocker Arms: Standard
Intake Runner: 269cc,320cc or 345cc - standard port location
Exhaust Ports: 137cc, standard location
Combustion Chamber: 119cc
Spark Plug: 14mm 5/8" .460" reach tapered seat
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised
Valve Angle: Stock 24°
Accessory Bolt Holes: Stock
Chamber Design: Open

Head Flow @ .700 Lift
370 intake, 261 exhaust (Super Flow 1020)
389 intake, 275 exhaust (Super Flow 600)

All heads flowed with a standard .750" intake plate, without exhaust tube, & 28" of water.

Stock#DescriptionPriceQuantity
WPI030040
specs>>
269cc intake- Oval port- 119cc chamber- bare casting- 2.300 x 1.880 $596.84
WPI030620
specs>>
Rectangle port- 119cc chamber- bare casting- 320cc intake- 2.300 x 1.880 $596.84
WPI030630
specs>>
345cc intake- Rectangle port- 119cc chamber- bare casting- 2.300 x 1.880 $596.84

MOTOWN - SB CHEVY


Designed for use in racing applications where cast iron heads are mandated, or for larger displacement small block street-type engines, World’s 220cc intake Motown heads are the ULTIMATE cast iron SBC head. Employing RightCast ® ports, big 2.080 diameter intake valves & a highly efficient 64cc combustion chamber, the Motown provides significant power increases over other heads on the market.

These are ideally suited for small block Chevy heads of 383 or larger displacements. Available bare or in complete assemblies in straight or angle plug configurations.

TECHNICAL SPECIFICATIONS

Casting ID Number: I-038
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides:
Integral cast iron
Spring Seats: Machined for 1.560"
Valve Diameter: 2.080"" intake, 1.600" exhaust (11/32" stem)
Guide Plates: Stock
Rocker Arm Studs: Screw-in style
Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
Intake Runner: 220cc, standard port location
Exhaust Ports: 70cc, standard location
Combustion Chamber: 64cc, straight or angled plug orientation
Spark Plug: 14mm 5/8" .460" reach tapered style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised w/ perimeter and center bolt pattern
Valve Angle: Stock 23°
Accessory Bolt Holes: Stock

Accepted by most oval tracks and sanctions. Check with rule book.

Head Flow @ .700 Lift
273 intake, 192 exhaust (Super Flow 1020)
287 intake, 202 exhaust (Super Flow 600)

All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.

Stock#DescriptionPriceQuantity
WPI014150
specs>>
220cc intake- 64cc chamber- angle plug- bare casting- 2.080 x 1.600 $392.84
WPI014250
specs>>
220cc intake- 64cc chamber- straight plug- bare casting- 2.080 x 1.600 $392.84

S/R SMALL BLOCK CHEVY


There are several important reasons why World’s S/R cylinder heads are the preferred alternative to expensive OEM castings or junkyard rebuilds.

First, you should know these heads are designed with extra-thick decks and walls for improved reliability as well as equipped with hardened steel exhaust seats that are compatible with today’s unleaded gasolines. They also come with screw-in rocker arm studs for extra durability. Needless to say, the S/R is substantially more durable than OEM castings. Valve cover rails have been raised and carefully machined to eliminate oil leaks and the heads can accommodate either early style perimeter or late model center bolt valve covers.Secondly, they are fully 50-state emissions legal and because they are an OEM replacement head, they are legal for use by many oval tracks and race Sanctioning organizations.

In fact, NHRA accepts World castings #043600 and #043610 as replacements for
Chevrolet 041, 186, 291, 462 and 492 cylinder heads. World Products SR Sportsman
Cylinder Heads are the ONLY heads allowed in the United Rebel Sprint Series!


GM PART NUMBER CONVERSION:

World #043600 = GM 333882, 460703, 462624, 468642, 3911032,3927187, 3932141,3946813, 3947041, 3970126, 3973414, 3973493* 3974387, 3981598*, 3986339, 3998920,3998991, 3998993, 3998997, 14020516, 14020517, 14020556, 14071114, 14079261
World #043610 = GM 3795896, 3814482, 3827185, 3884520, 3890462, 3911032, 3917290,3917291, 3927186, 3932441, 3946813, 3973370, 3998993

TECHNICAL SPECIFICATIONS
Casting ID Number:
I-052, I-058
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides: Integral cast iron
Spring Seats: Machined for 1.560" and 1.250"
Valve Diameter: 1.940" intake, 1.500" exhaust (11/32" stem)
Rocker Arm Studs: Screw-in style
Rocker Arms: 1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
Intake Runner: 170cc, standard port location
Exhaust Ports: 65cc, standard location
Combustion Chamber: 58cc, 67cc or 76cc, straight plug orientation
Spark Plug: 14mm 5/8" .460" reach tapered style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised w/ perimeter and center bolt pattern
Valve Angle: Stock 23°
Accessory Bolt Holes: Stock

50-State Emissions legal. Accepted for use by these racing organizations (NHRA, WINSOTA, URSS). Check with rule book.

Stock#DescriptionPriceQuantity
WPI042650
specs>>
(for 305 c.i.d.)- 58cc chamber- straight plug- bare casting- 1.940 x 1.500 $233.85
WPI043600
specs>>
76cc chamber- straight plug- bare casting- 1.940 x 1.500 $311.80
WPI043640
specs>>
76cc chamber- straight plug- 87 & up intake- bare casting- 1.940 x 1.500 $311.80
WPI043650
specs>>
67cc chamber- straight plug- 87 & up intake- bare casting- 1.940 x 1.500 $311.80

S/R TORQUER SB CHEVY


Improved replacements for the factory heads, World's SR Torquer provide up to
30HP over stock! There are several important reasons why World’s S/R cylinder
heads are the preferred alternative to expensive OEM castings or junkyard rebuilds.

First, you should know these heads are designed with extra-thick decks and walls for
improved reliability as well as equipped with hardened steel exhaust seats that are
compatible with today’s unleaded gasolines. They also come with screw-in rocker
arm studs for extra durability. Needless to say, the S/R is substantially more durable than OEM castings.

Secondly, they are fully 50-state emissions legal and because they are an OEM
replacement head, they are legal for use by many oval tracks and race Sanctioning
organizations.

Valve cover rails have been raised and carefully machined to eliminate oil leaks and
the heads can accommodate either early style perimeter or late model center bolt
valve covers.

TECHNICAL SPECIFICATIONS:
Casting ID Number:
I-052, I-058
Material:
High density cast iron
Valve Seats:
Intake (integral), exhaust (hardened)
Valve Guides:
Integral cast iron
Spring Seats:
Machined for 1.560" and 1.250"
Valve Diameter:
2.020" intake, 1.600" exhaust (11/32" stem)
Rocker Arm Studs:
Screw-in style
Rocker Arms:
1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
Intake Runner:
170cc, standard port location
Exhaust Ports:
65cc, standard location
Combustion Chamber:
67cc or 76cc, straight plug orientation
Spark Plug:
14mm 5/8" .460" reach tapered style
Valve Job:
Multi-angle intake and radiused exhaust
Valve Cover Rail:
Raised w/ perimeter and center bolt pattern
Valve Angle:
Stock 23°
Accessory Bolt Holes:
Stock

50-State Emissions legal. Accepted by most oval tracks and sanctions as stock replacements. Check with rule book.

Stock#DescriptionPriceQuantity
WPI042660
specs>>
170cc intake- 67cc chamber- straight plug- bare casting- 2.020 x 1.600 $311.80
WPI042670
specs>>
170cc intake- 76cc chamber- straight plug- bare casting- 2.020 x 1.600 $311.80
WPI042770
specs>>
170cc intake- 76cc chamber- straight plug- '87 & up intake- bare casting- 2.020 x 1.600 $311.80

SPORTSMAN II SB CHEVY


The industry’s most popular true high performance cast iron cylinder head has been continuously improved since its introduction over 20 years ago. The cylinder head, became an instant success and was named Product of the Year in 1988 by Hot Rod Magazine. It produces 30-70 HP over stock heads With 200cc intake and 69cc exhaust ports, World’s SPORTSMAN II heads offer 30-70 horsepower gains over OEM
heads, yet are 50-state emissions legal (E.O. #D-343-1).

TECHNICAL SPECIFICATIONS

Casting ID Number: I-037
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides: Integral cast iron
Spring Seats: Machined for 1.560" and 1.250"
Valve Diameter: 2.020"" intake, 1.600" exhaust (11/32" stem)
Guide Plates: Stock
Rocker Arm Studs: Screw-in style
Rocker Arms:
1.5 ratio (use of 1.6 ratio will require elongation of pushrod holes)
Intake Runner: 200cc, standard port location
Exhaust Ports: 69cc, standard location
Combustion Chamber: 64cc or 72cc, straight or angled plug orientation
Spark Plug: 14mm 5/8" .460" reach tapered style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised w/ perimeter and center bolt pattern
Valve Angle: Stock 23°
Accessory Bolt Holes: Stock
50-State Emissions legal. Accepted by theses racing sanctions (WINSOTA , IMCA) as stock replacements. Check with rule book.

Head Flow @ .600 Lift
245 intake, 165 exhaust (Super Flow 1020)
260 intake, 176 exhaust (Super Flow 600)
All heads flowed with a standard .750" intake plate, without exhaust tube, and 28" of water.

Stock#DescriptionPriceQuantity
WPI011150
specs>>
200cc intake- 64cc chamber- angle plug- bare casting- 2.020 x 1.600 $392.84
WPI011250
specs>>
200cc intake- 64cc chamber- straight plug- bare casting- 2.020 x 1.600 $392.84
WPI012150
specs>>
200cc intake- 72cc chamber- angle plug- bare casting- 2.020 x 1.600 $392.84
WPI012250
specs>>
200cc intake- 72cc chamber- straight plug- bare casting- 2.020 x 1.600 $392.84

WINDSOR JR & SR


IRON CYLINDER HEADS

The WINDSOR series of heads are the cost-effective choice for serious power from your Windsor Style Small Block Ford!

When it comes to high performance replacements for factory cast iron heads, World’s
WINDSOR JR. has the market covered with 180cc intake runners, plus the 64cc exhausts ports are substantially larger than OEM Ford heads. Add a highly efficient combustion chamber design and larger valves and you have big bolt-on power. These heads are 50-State emissions legal factory replacements.

World’s WINDSOR SR. boasting 200cc ports, plus 64cc exhaust ports that are substantially larger than OEM Ford heads. Add a highly efficient combustion chamber design and larger valves and you have big bolt-on power. These heads are also 50- State emissions legal factory replacements.

TECHNICAL INFORMATION
Casting ID Number: I-056 (JR-180cc) I-061 (SR-200cc)
Material: High density cast iron
Valve Seats: Intake (integral), exhaust (hardened)
Valve Guides: Integral cast iron
Spring Seats: Machined for 1.560" and 1.250"
Valve Diameter JR: 1.940" intake, 1.600" exhaust (11/32" stem)
Valve Diameter SR: 2.020" intake, 1.600" exhaust (11/32" stem)
Guide Plates: Special World part #702352-8
Rocker Arm Studs: Screw-in style
Rocker Arms: Adjustable rockers recommended. 1.6 ratio (use of 1.73 ratio will require elongation of pushrod holes)
Intake Runner: JR-180cc, SR- 200cc, standard port location
Exhaust Ports: 64cc, standard location (dual exhaust bolt pattern to accommodate large custom headers)
Combustion Chamber: JR-58cc, SR-64cc
Spark Plug: 14mm 5/8" .460" reach tapered style
Valve Job: Multi-angle intake and radiused exhaust
Valve Cover Rail: Raised
Valve Angle: Stock 20°
Accessory Bolt Holes: Stock
50-State Emissions legal

Head Flow @ .600 Lift: JR
234 intake, 160 exhaust (Super Flow 1020)
246 intake, 148 exhaust (Super Flow 600)

Head Flow @ .600 Lift: SR
251 intake, 174 exhaust (Super Flow 1020)
264 intake, 183 exhaust (Super Flow 600)

All heads flowed with a standard .750" intake plate,without exhaust tube, and 28" of water.

Stock#DescriptionPriceQuantity
WPI053030
specs>>
WINDSOR JR. 180cc intake- 58cc chamber- bare casting- 1.940 x 1.600 $414.82
WPI053040
specs>>
WINDSOR SR. 200cc intake- 64cc chamber- bare casting- 2.020 x 1.600 $414.82