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SB Ford GT40P Drop In Valve Springs Kit, Hyd Roller w/ Stock Cam, .450" lift and below

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Product Description

 Fits Factory Heads, no machining required.

Valve Spring Kit for SB FORD GT40P w/ Stock Cam

Application: SB Ford GT40P, E7

Fitment: GT40P, E7 and other 302 heads w/ .393"/.481" tip length valves



Estimated Processing Time to build and ship this kit is currently around 14 days. By placing your order, you understand and agree take around 14 days to be built and shipped.


This version is for SBF engines running the stock hydraulic roller cam, works with the HO cam as well as other factory hyd roller cams w/ up to .450" lift using 1.6 rockers.

Clears both, stock type rockers as well as aftermarket roller rockers.

This kit will increase seat pressure by 25+% and the open pressure by 43+%

  • Stock seat pressure- 70-75 Lbs (valve closed)
  • These springs- 100 Lbs (30+% more seat pressure)
  • Stock open pressure- 210-220 Lbs
  • These springs open pressure- 315 Lbs (43+% more open pressure)

This is a heavy duty kit for low lift cams specially designed to support increased RPM and idle quality when running OEM factory/stock hyd roller cams.

The default version works with stock .393"/.481" tip length valves. If the exhaust valves have been changed to aftermarket valves w/ .393", select the .393"/.393" option towards the top of the page.



      Spring Specifications:

  • Spring Type- Heavy Duty HP Single w/ Damper
  • Machine work required?- NO
  • 1.510" Outside Diameter
  • 100 Lbs @ 1.790" Valve Closed Installed Height (installed height measurements required)
  • 315 Lbs @ .450" Lift



     Kit includes:

  • Package of eight intake retainers & locks.
  • Package of eight exhaust retainers & locks
  • 16 Drop in Heavy Duty HP Valve Springs
  • Specification Sheet
  • Installed height diagram 


To add a set of our Premium Viton Valve Seals or a Hardened Shim pack, use the appropriate check box up towards the top of this page.


Thank you~



 Alex's Parts- The smart choice in valve train parts~