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. |
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| NEXTEK VALVE SPRINGS - learn more about our valve springs |
| Part No. |
Description |
Max Valve Lift |
O.D. |
I.D. |
Installed/Open Pressure |
Rate (lbs/in) |
Coil Bind |
Retainer # |
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| Stock Diameter Fully Polished Single Conical Ovate Wire |
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| 221430-16* |
Chrysler Hemi 5.7L, 6.1L
High Performance Street/Strip |
.600" |
1.056 Top
1.206 Bottom |
.630 Top
.780 Bottom |
130 @ 1.811
360 @ 1.236 |
400 |
1.170 |
23629-16 |
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| 221431-16* |
Chrysler Hemi 5.7L, 6.1L
High Performance Street/Strip |
.650" |
1.076 Top
1.311 Bottom |
.650 Top
.885 Bottom |
146 @ 1.811
371 @ 1.161 |
353 |
1.100 |
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| * These Chrysler Hemi springs come with shims which are ONLY needed for 6.1L applications on the intake side in order to achieve the correct installed height. P/N 221431 also includes a set of piloting rings that install over the factory “Top Hat” integral valve seal to properly locate the ID of the spring on early 5.7L (thru 2008) and 6.1L applications. |
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| 7 ° TITANIUM RETAINERS - learn more about our retainers |
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Valve Stem
Diameter |
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Dimensions |
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| Part # |
Quantity |
Spring |
Degree |
A |
B |
C |
Height |
Valve Locks |
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| 7° Titanium |
|
| 23629-16 |
16 pcs. |
221430-16 |
.3125" |
7° |
.915" |
.620" |
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Stock |
Stock |
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| 23613-16 |
16 pcs. |
221431-16 |
.3125" |
7° |
.935" |
.650" |
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