PAC | SKU: PAC-1204X-16

PAC RPM Series GM Dual Valve Spring Set, 1.290" O.D - PAC-1204X-16

Name: PAC RPM Series GM Dual Valve Spring Set, 1.290" O.D - PAC-1204X-16
Brand: PAC
SKU: PAC-1204X-16
Price: 920.8 NZD
Availability: InStock

145-385lbs @ 1.800", .700" Lift, 1.000" Coil Bind

$920.80 NZD + GST

Shipping calculated at checkout.

Description

DUAL VALVE SPRINGS, 1.290 OD

145-385lbs @ 1.800", .700" Lift, 1.000" Coil Bind

Part Number: PAC-1204X-16

PAC Racing's Street Performance RPM Series Beehive Valve Springs are constructed using our signature PACaloy super clean wire and are heat-treated in-house for precision spring rates and improved strength. They also receive a multi-peen process, polishing, and a Nano-Peen? proprietary surface treatment for service life optimization. Applications include GM Gen III/IV LS, Ford 2V and 4V MO.D Motors, Ford Coyote, Big Block Chevy, Ford 5.4L GT500 & Cobra Jet, Chrysler 6.4L Gen III Hemi, GM Gen IV LS7, and Ford GO.Dzilla 7.3L.

Built using our signature PACaloy super clean wire to ensure strength and durability
In-house heat-treating for precise spring rates and increased strength
Multi-peen process to optimize service life
Polishing to improve operating cycles
Nano-Peen proprietary surface treatment

Specifications:

Outer Diameter - Outer Valve Spring: 1.290"
Inner Diameter - Outer Valve Spring: 0.950"
Inner Diameter - Inner Valve Spring: 0.694"
Installed Height: 1.800"
Installed Load / Height (Valve Closed): 145 LB @ 1.800"
Open Height: 1.150"
Open Load: 388 PS
Open Load / Height (Valve Open): 385 LB @ 1.150"
Valve Spring Rate: 369 PS
Max Coil Bind: 1.000"
Max Valve Lift: 0.750"
Recommended Valve Spring Retainer - 300 Series: R335
Recommended Valve Spring Retainer - 400 Series: R435, R450
Recommended Valve Spring Retainer - 500 Series: R550
Recommended Valve Spring Retainer - 600 Series: R635, R650
Recommended Valve Spring Seat: S129, S135, S136
Valve Spring Series: RPM Series
Valve Spring Type: Dual
Primary Market: Circle Track, Street Performance