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5.4L FORD MODULAR
Valves Valvetrain Components Rods Pistons Timing Kit Misc.

NEXTEK VALVE SPRINGS AND RETAINERS
Manley valve springs are wound from super clean alloy. Each design minimizes stress to ensure long service life with high lift camshafts. Retainers are manufactured in our own double spindle CNC machines to exacting tolerances and precise installed height specifications.
 
NEXTEK VALVE SPRINGS - learn more about our valve springs
Part No. Description Max Valve Lift O.D. I.D. Installed/Open Pressure Retainer #
  2 Valve Stock Diameter Single Conical Ovate Wire
221427-16 Ford 4.6L, 5.4L SOHC
Street/Strip Applications
.580" 1.020" Top
1.125" Bottom
.642" Top
.748" Bottom
95 @ 1.680"
240 @ 1.130"
23627-16
23667-16 (+.060")
221437-16 Ford 4.6L, 5.4L SOHC
Ideal for Boosted Applications
.580" 1.030" Top
1.175" Bottom
.642" Top
.787" Bottom
125 @ 1.680"
265 @ 1.130"
23627-16
23667-16 (+.060")
  3 Valve Single Conical Ovate Wire
221433-24 Ford 4.6L, 5.4L 3 Valve
3 Valves per Cylinder
High Performance Hydraulic Roller
.580" 1.013" Top
1.101" Bottom
.650" Top
.738" Bottom
110 @ 1.670"
260 @ 1.090"
23614-24
  4 Valve Stock Diameter Single Conical Ovate Wire
221434-32 Ford 4.6L, 5.4L DOHC
High Performance Street/Strip
.525" 1.016" Top
1.126" Bottom
.640" Top
.750" Bottom
95 @ 1.420"
260 @ .920"
23627-32
23667-32 (+.060")
 
7° TITANIUM RETAINERS - learn more about our retainers
Valve Stem
Diameter
Dimensions (Retainer Step Dimension Chart)
Part # Quantity Spring Degree A B C Height Valve Locks
  2 Valve 7° Titanium
23627-16
23667-16
16 pcs. 221427-16 / 221437-16 7 mm .875" .627" .465" Stock
+.060"
Manley 13089 or factory valve lock
  3 Valve 7° Titanium
23614-24 24 pcs. 221433-24 6 mm .875" .640" .440" Stock Manley 13088 or factory valve lock
  4 Valve 7° Titanium
23627-32
23667-32
32 pcs. 221434-32 7 mm .875" .627" .465" Stock
+.060"
Manley 13089 or factory valve lock
 
7° MACHINED VALVE LOCKS
Part No. Quantity Valve Stem Groove Type Angle Wgt./Pr.
13088-24* 24 pr .2345" - .2355" Manley Bead Loc® Single Radius 1.3 gms
13089-16* 16 pr .2740" - .2750" Manley Bead Loc® Single Radius 1.9 gms
13089-32* 32 pr .2740" - .2750" Manley Bead Loc® Single Radius 1.9 gms
* Must be used with Manley Bead Loc® single radius groove valves
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