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> MOTOWN Iron Heads
MOTOWN Iron Heads

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 and a highly efficient 64cc combustion chamber, the MOTOWN provides significant power increases over other heads on the market. They are ideally suited for use on small block Chevy engines of 383” or larger displacements. Available bare or in complete assemblies, as well as in straight or angle-plug configurations..

  • IMCA
    Approved by The Inl. Motor Contest Association.


TECHNICAL SPECS

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" and 1.250"
Valves: Manley stainless steel valves in assemblies
Valve Diameter: 2.080"" intake, 1.600" exhaust (11/32" stem)
Guide Plates: Not Included
Rocker Arm Studs: Not Included
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. Accel 276 or 276S or equivalent
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 many oval tracks and sanctions. Check with rule book.


014150 World Products Motown 220cc Iron Head Flow Data

Valve Lift--.300 --.400 --.500 --.600 --.700 --.800
2.080 ------- 191 -- 235 -- 266 -- 284 -- 287 -- 284
1.600 ------- 154 -- 176 -- 189 -- 198 -- 202 -- 205

Methods used: Superflow 600, Flowed at 28" with a bowl blend 1" down, 1" radiused entry plate on the intake port, No exhaust tube, Using Manley Race Master valves.

MOTOWN IRON
HEAD ASSEMBLY BUYING GUIDE

Use this guide to match your Cam Spring Specs to our Assembled Heads & choose which assembly you need from the choices below. Please Note: Bare Heads contain no Valves.

-1 Assembled Heads: Hydraulic Flat Tappet Cam
1.250": 110 lbs. @ 1.700", 300 lbs. @ 1.250", coil bind @ 1.160"
MAX LIFT @ .500"


-2 Assembled Heads: Mech. Flat Tappet or Hydraulic Roller Cam
1.440": 135 lbs. @ 1.800", 320 lbs. @ 1.200", coil bind @ 1.125",
MAX LIFT @ .600"

-3 Assembled Heads: Solid Roller Cam
1.540": 190 lbs. @ 1.900", 450 lbs. @ 1.300", coil bind @ 1.200"
MAX LIFT @ .660""


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MOTOWN Iron Heads
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product variations
 
014150 Motown 220, SBC Iron Head, 220cc Intake, 64cc Chamber, Angle plug
Choose Bare or Assembled .
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$392.84
 
 
 
14150-1 Motown 220 SBC Assembled Iron Head
220cc Intake, 64cc Chamber, Angle plug
For hydraulic flat tappet cams w/ 1.250" spring assembly
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$618.51
 
 
 
14150-2 Motown 220 SBC Assembled Iron Head
220cc Intake, 64cc Chamber, Angle plug
For mechanical flat tappet and hydraulic roller cams, w/ 1.437" spring assy.
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$648.41
 
 
 
14150-3 Motown 220 SBC Assembled Iron Head
220cc Intake, 64cc Chamber, Angle plug
For solid roller cams, w/ 1.550" spring assy.
TO PURCHASE: Please "click" the small box to the right of the "BUY NOW" button first.
$683.46
 
 
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