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MHS / PAC RPM Series Street / Strip Valve Springs for GEN 1 /2 Coyote Cylinder Heads

MHS-702620-32
True Drop in Design. Fits Stock Retainers, VCT Friendly, .600" Lift Capable
Pricing: $599.00

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Description

MHS / PAC RPM Series Street / Strip VCT Friendly Valve Spring Kit 
for GEN 1 / 2 Coyote Cylinder Heads 

  • Manufactured in the U.S.A. by PAC Racing for Modular Head Shop
  • Designed for N/A and Moderate Forced Induction Applications up to 25lbs of boost
  • VCT Friendly for use with Factory Phasers 
  • Endurance Heat Treatment and Surface Finishing for additional strength and reliability 
  • True Drop-in design. Fits Stock retainers and Spring Seat / Seal 
  • 6.0g weight savings over the Factory GEN 2 Spring / Retainer Combo
    when paired with MHS Titanium Retainers - Approx. 12% lighter 
  • ID Chamfer Top and Bottom for consistent Retainer and Valve Seal / Seat fitment 
  • 80lbs Seat Pressure @ 1.575" Installed Height, 217 lbs/in. Rate, .920" Coil Bind
  • .600" Recommended Max Lift 
These Springs are designed to be used with both stock and aftermarket camshafts. The main focus of these springs is to be able to support both higher than stock RPM and boost pressures, without beating up the phasers or needing to lockout the camshafts. 
We recommend these valve springs for street / strip applications running no more than 25lbs of boost and a max lift of .600". 
 
For Full Spring Specs, please see the Specs tab above. 
 
 

Spring Specs

Part Number  MHS-702620-32
Application GEN 1 / 2 Coyote and Boss 302  
Seat Pressure   80lbs @ 1.575" Installed Height 
Open Pressure   210lbs @ .975" - .600" Lift 
Spring Rate   217 lbs / in 
Coil Bind   .920" 
Max Recommended Lift   .600" 
Spring ID Top   .538" 
Spring ID Bottom   .700" 
Spring Weight (g)   39.7g - Stock GEN 2 is 42.8g  
Features   PAC RPM Processing, ID / OD Chamfer 
Optional Steel Retainers   4130 Chrome Moly - 6.9g - Stock is 7.0g 
Optional Titanium Retainers   6AL-4V Titanium - 4.1g 

 

Details

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  • Item Requires Shipping
  • 6.0 lbs.
  • W8.0000” x H8.0000” x L8.0000”
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