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STS -12 WB MC Series Cylinder Heads305cc Intake Port Volume 69cc Combustion Chambers 70/125 Valve Centerline CNC Ported
- STS -12 WB MC Series Cylinder Heads
- 70/125 Valve Spacing
- 305cc Intake Ports
- 69cc Combustion Chambers
- 2.200'' Intake / 1.600'' Exhaust Valves
- 1.550'' Dia. Springs - 240# Seat Pressure
- Titanium Retainers
- Angle Plug
- Assembled, 2/pkg.
Cylinder Head Specifications - Intake Port Volume: 305cc (CNC Ported)
- Combustion Chamber Volume: 69cc
- Valves: 2.200' dia. x 5.440' o.a.l. Intake / 1.600' dia. x 5.440' o.a.l. Exhaust ( 11/32' Stem Diameter )
- Valve Springs: 1.550' Diameter - Open Pressure: 550 lbs.; Closed Pressure: 240 lbs.; Installed Height: 1.950'; Max Lift: .700'
- Spring Retainers: 1.550' 10° Titanium
- Rocker Studs: N/A - Shaft System Required
- Guide Plates: N/A
- Valve Seals: 11/32'
- Spark Plug Configuration: AngledFacts and Related Components
- Torque Heads: 70 ft-lb.
- Torque Rocker Studs: 40-45 ft-lb.
- Intake Gasket: Fel-Pro p/n 375-1209
- Head Gasket: Fel-Pro p/n 375-1003 (350ci) / 375-1004 (400ci) or Cometic p/n 245-C5399 (350ci) / 245-C5403 (400ci)
- Exhaust Gasket: Brodix p/n 158-MG52464 (Trim to fit), Cometic p/n 245-C5424 (Spread Port)
- Head Studs: ARP p/n 070-234-4723 (12-point with 3/8' center studs)
- Spark Plug Specs: 14mm Thread, .750' (3/4') Reach, Gasket Seat
- Valve Angle: 15°
- Angle Milling: .0065' per cc
- Flat Milling: .0055' per cc
- Pushrod Slots: 70/125
- Stud Girdle: N/A
- Rocker Arms: Shaft System with 70/125 Spacing (Check heads for intake offset) - T&D 22071
- Lifters: .180' Offset
- Pistons: Special 15°
- Pushrods: Special Length
- Intake Face Angle: 10°
- Exhaust Pattern: Spread Port - Stahl Header Flange Bolt Pattern
- Valve Centerline: 70/125
- Spring Pockets: 1.550' Out of the Box, May be cut to 1.625' - No larger or deeper
- Accessory Bolt Holes are Drilled
- Recommended Intake Manifold: Brodix HV 1200 (p/n 158-HV1200), HV 1201 (p/n 158-HV1201)
Part TypeCylinder Head
BrandBRODIX
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number1158106
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
