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PAC-1201 - 1200 Series Circle Track Endurance Single Valve Spring Set - 1.260" OD, 140bs @ 1.750", 540 lbs/in Spring Rate, .550" Max Lift
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* Whole number only
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Manufacturer: Pacaloy
Part No.: PAC-1201
The PAC-1201 Cirlce Track 1200 Series Endurance Valve Spring is a Small Diameter Spring designed to fit the stock SBC spring pocket.
This Spring has a higher spring rate for use with aggressive camshaft profiles.
| Part Number |
PAC-1201 |
| Outer Spring OD |
1.260" |
Outer Spring ID
|
0.860" |
| Damper |
YES |
| Inner Spring ID |
0.770 |
Seat Pressure
|
140bs @ 1.750" |
| Open Pressue |
437lbs @ 1.200" |
| Spring Rate |
540 lbs /in |
Coil Bind
|
1.115" |
| Max Lift |
0.550" |
| Titanium Retainers |
R649
|
| Steel Retainers |
R349 |
| Spring Seats |
N/A |
| Spring Cups |
N/A |
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