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*NEW* Max Output II Drop in style Beehive Valve Spring Kit for SBF GT40P heads

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Price:
$194.50
SKU:
Vsk7m49-EB
Brand:
Shipping:
Calculated at checkout


Product Description

Beehive Spring Kit for GT40P

Max Output II Beehive Spring Kit for SB Ford (limited time introductory offer)

Fitment: GT40P SB Ford

We're expanding our drop in style kits for SB Ford. Here is the long awaited Max Output II Beehive Spring kit for GT40P heads.

A fair amount of effort has gone into creating these kits and we're happy to say, the results are awesome!

We've custom tailored this kit to work with GT40P's staggered tip length valves and a wide range of hyd roller cams.

Good up to .600" lift, these beehives fit right onto the stepped spring base of GT40P heads, no machining required.

With the beehive springs progressively wound design, it offers improved spring stability throughout the RPM range.

Proud to say, these are an Alex's Parts exclusive- made up to our specifications. We looked at the various beehive springs currently available from all the cam companies and non of them were suitable for this application so we went ahead and had PAC produce them for us.

A welcomed additional to our "Max Output II" spring family!

     

      Check out the features:

  • Manufactured from Multi Arc Ovate Wire
  • Made in the USA
  • Seat Pressure: 140 Lbs for Hyd Roller Cams (also suitable for mechanical flat tappet cams. [not for hyd flat tappet cams])
  • Available Lift Range: .600"
  • Parts included: Small OD Beehive Retainers, Custom Beehive Springs and Hardened Locks
  • Fits factory staggered tip length valves used on OE SBF GT40 heads (kits can also be ordered to fit aftermarket .393"/.393" tip length valves )
  • Spring seat machining is not necessary, the spring fits OE SB Ford stepped spring bases

    

      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
  • Installed Height Micrometer designed for use with beehive springs on SB Ford heads (Proper installation requires the use of a suitable beehive installed height micrometer)
  • If needed, order the kit to work with .393"/.393" tip length valves. Use this option for Ford racing valves w/ .383"/.383" tip length valves.

 

 

       Average Load Specifications:

  • Seat Load: 140 Lbs @ 1.760" (Valve Closed)
  • Open Load @ .440" Lift- 307 Lbs
  • Open Load @ .475" Lift- 321 Lbs
  • Open Load @ .500" Lift- 331 Lbs
  • Open Load @ .525" Lift- 341 Lbs
  • Open Load @ .550" Lift- 352 Lbs
  • Open Load @ .575" Lift- 362 Lbs
  • Open Load @ .600" Lift- 372 Lbs

 

      Size and Other Specifications:

  • Small End ID- .651"
  • Small End OD- 1.095"
  • Large End ID- 1.000"
  • Large End OD- 1.450"
  • Solid Height- 1.086"
  • Spring Rate: 380 Lbs/inch
  • .600" Lift Range (plus a .060" minimum safety margin before solid height)

 

This kit can be used with a wide range of cams. If you would like us verify compatibility, feel free to use the contact us link and forward the lift and duration @ .050" figures or simply sent us the brand and part number so we'll look it up. Let us know how you plan to run the engine and if it has boost. (daily driver/cruiser, street/strip use, turbo, supercharger, spirited hot street tire burner, circle track, etc.)

 For a limited time, we're offering these at a discounted price. Pick up your custom beehive spring kit for around the same price the other guys charge for their beehive springs alone.

 Our customers know we're very serious about our 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 material and design. When you order from us, you're getting the best possible value available anywhere.

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

 

        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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