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*NEW* Drop in style Beehive Valve Spring Kit, SBF GT40P, For Stock or Mild Hyd Cams, Roller or Flat Tappet

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Product Description

Beehive Spring Kit for GT40P

Beehive Spring Kit for SB Ford w/ Stock to Mild Cams, also works w/ 1.7 ratio rockers

Fitment: GT40P SB Ford, Hyd Roller or Hyd Flat Tappet applications


Once again, we're expanding our drop in style kits for SB Ford. Here is another drop in style beehive spring kit for GT40P heads.

This version is for stock HO cams as well as mild aftermarket cams and works well with high ratio rocker arms.

Basically designed for short duration, high lift cams with up to .550" lift.

We put this kit together for all those performance enthusiasts who have a stock or mild aftermarket cam but want to upgrade to HP beehive springs w/ light weight retainers.

This gives them a chance to extract as much power as possible without the need to replace their camshaft.

Use for cams with up to 218 degrees duration @ .050" (on the intake, more duration on the exhaust is acceptable) For bigger cams, take a look at our other spring kits.

Works with SB Ford's GT40P's staggered tip length valves as well as .393"/.393" aftermarket valves. (For .393"/.393", use check box towards the top of page)

These beehives fit right onto the stepped spring base of GT40P heads without the need for machine work; also known as a "drop in fit".

The springs are manufactured using premium grade multi arc "ovate" wire and are made here in the USA.

Springs are supplied to us by PAC racing springs.


      Check out the features:

  • Manufactured from Multi Arc Ovate Wire.
  • Made in the USA.
  • Seat Pressure: 125 Lbs
  • Available Lift Range: .550"
  • Parts included are: Chrome Moly Retainers, Beehive Springs and Hardened 7 degree locks.
  • Fits factory staggered tip length valves used on OE GT40P heads (kits can also be ordered to fit aftermarket .393"/.393" tip length valves )
  • Spring seat machining is not necessary, the spring fits right onto an OE SB Ford stepped spring base.


      Add-On Options:

  • Premium Viton Valve Seals (Our premium viton valve seals are the finest available anywhere. Why settle for a gasket company seals?)
  • Hardened Spring Shim Pack, Includes: 16 each of: .030" and .015" shims
  • This kit can be ordered to work with heads using aftermarket exhaust valves w/ .393" tip lengths. This option also works with Ford racing valves w/ .383"/.383" tip lengths. Select .393"/.393" option.



       Average Load Specifications:

  • Seat Load: 125 Lbs @ 1.760" (Valve Closed)
  • Open Load @ .440" Lift- 245 Lbs
  • Open Load @ .475" Lift- 257 Lbs
  • Open Load @ .500" Lift- 265 Lbs
  • Open Load @ .525" Lift- 274 Lbs
  • Open Load @ .550" Lift- 282 Lbs


      Size and Other Specifications:

  • Small End ID- .651"
  • Small End OD- 1.055"
  • Large End ID- 1.000"
  • Large End OD- 1.410"
  • Solid Height- 1.060"
  • Spring Rate: 280 Lbs/inch
  • .550" Lift Range


 This kit is currently being offering at a discounted price. Pick up a custom built beehive spring kit for around the same price the other guys charge for their beehive springs alone!

 Our customers know we're serious about spring kits. Our quality can be compared to parts selling for well over twice the price and we continue to step up our game with improvements in materials and design. When you order from us, you're getting the best possible valve train value available.

 Average shipping delay is around 7 days after order date. If you need it quicker, be sure to order early or contact us about rush order costs/options.



Alex's Parts~ Excellent value in valve train parts .



















































     Questions & Answers:

  • Q- How important is it to measure valve spring installed heights?
  • A- Setting up installed heights is important for the following reasons:
  1. Measuring installed heights will assure the intended seat and open loads are achieved.
  2. If the installed heights are not measured, how can the builder be sure they are correct?
  3. On a staggered tip length application (like SBF Gt40/P), what if the builder mixes up the retainers and locks and installs them in a reverse orientation? If any of the parts are mixed up, it could create serious problems. If installed height measurements are taken, the builder would easily find these mistakes and correct them before final assembly.
  4. Builders who want maximum performance will always measure their installed heights and add shims as needed to get the installed heights as close as possible to the target spec card included.


  • Q- How close do I need to get the installed heights to the target height spec?
  • A- As close as you can with a tolerance of minus .015" to target height. In order to improve installed height accuracy and if it's possible, it's wise to set it up between .005"-.008" on the low side of the target height. Once the engine is run, the locks will seat further into the retainer. This is a natural process, 7 degree hardware will wedge tight together and as this happens, the installed height will increase a very small amount so it's better to lean on the lower side of target height.


  • Q- Will I need an installed height micrometer to set up the installed heights?
  • A- Yes, in order to set up installed heights, an installed height micrometer intended for beehive springs and one which is compatible with OE type SB Ford heads is required.


  • Q- We have a beehive installed height mic which we used on another application- will it work on my SB Ford heads?
  • A- That depends on the brand and model of the mic. Many height mics designed for beehive springs are made for LS Chevy or aftermarket heads which won't fit a stepped SB Ford spring base.


  • Q- How can I determine if the beehive mic we already have will work on a SB Ford?
  • A- Just measure the opening (bore) on the bottom of the mic. If the inside diameter measures at least 1.010", it should work. (see pictures below)


  • Q- Can I measure the installed heights with a machinist scale, snap gauges or calipers?
  • A- Negative, this is not a viable option when using beehive retainers for the following reasons.
    Using calipers, snap gauges or a machinist scale only work when the measurement is taken parallel to the valve stem, not at an angle. Since a SB Ford's stepped spring base is bigger than the retainer, it cannot be easily measured straight up and down.


  • Q- My existing installed height Micrometer has a stepped top surface which the beehive retainer enters into and contacts the bottom of the step below. The readings I'm getting are .150"+ more than my target installed height. Whats going on and how do I deal with this?
  • A- This condition happens when an installed height mic designed for larger OD retainers is used with a beehive set up. On common "cylindrical spring" installed height mic's, the shape of the top of the mic is intended to clear the first step used on bigger retainers. Most beehive retainers are too small for Std installed height mic's and will fall into the counter bore which produces an inaccurate measurement.


  • Q- How do I determine if the top side of my mic will work with a typical beehive retainer?
  • A- Just measure the inside diameter of the topside of the mic and compare it to the OD of the retainer. The retainer must sit on the top surface of the mic and not inside its counterbore.


  • Q- Do I need hardened shims?
  • A- Yes. Std shims are too soft and will break down during use. Std shims should not be used because as they wear down, fine metal particulate will contaminate the oil.






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