Below are the available bulk discount rates for each individual item when you purchase a certain amount
High Performance Hydraulic Flat Tappet Cam, up to .550" Lift
Also mild Hyd Roller w/ up to .550" Lift (see *)
Our Vortec kit is engineered specifically for Iron Vortec heads. That's right, no machine work required to set up a pair of SBC Iron Vortec heads for .550" lift.
We engineered this kit with all the right parts just so Vortec head owners won't have to machine the spring seats and guides to run up to .550" lift.
Great for engines with 1.6, high ratio rockers.
Yes, works with self aligning rockers as well as heads w/ screw in studs and guide plates and std, non self aligning rockers.
As you may already know, Vortec heads have a problem w/ retainer to seal clearance. The stock retainers and springs do not allow for more then around .460" lift.
We use a special retainer and spring combination which solves two vortec head problems.
The retainer to seal clearance issue.
Spring base diameter issue (vortec heads will not accept std SBC springs)
The issue with clearance between the retainer and seal was solved by producting a special retainer which offers maximum clearance between the bottom side of retainer and the top of the seal. The bottom of the retainer is pretty much "flush" with the bottom edge of the locks. This design offers maximum clearance without compromising strength or requiring the guides to be shortened.
Our springs are a perfect fit on the stock Vortec spring base.
Both problems solved!
Stock valves have .260" IN/.289" EX Tip lengths which will generally allow for up to .550" lift.
It it durable? Yes! This same kit is running on hundreds of Vortec engine world wide.
Kit comes with:
For 110 Lb seat pressure, we recommend purchasing a shim kit to facilitate setting up the proper installed height. Read the tech info under the "Valve Spring Shims" catagory for more details about how to set up installed height.
Recommended seat pressure for High Performance Hydraulic Flat Tappet cams is 110 Lbs but if you're running a mild torque or RV cam, go w/ 100 Lbs seat pressure.
Our valve springs come from a major US valve spring supplier. This same company supplies valve springs to many well known companies like: Pioneer, Comp, Qual Cast/Fast, Elgin & many other US parts distributors.
Be assured our Vortec springs meet todays standard of the industry.
Suitable for most hyd flat tappet cams w/ up to 236 degrees duration @ .050"
Hydraulic flat tappet cams with more then 236 degrees duration @ .050" can contact us for spring kit options. We can taylor a kit for your needs.
Requirements- Valve Seal replacement is highly suggested. It's important for the installer to make 100% sure the seals are fully seated down on the guide. Seals which are not fully seated will reduce maximum lift capacity. We recommend measurments be taken between retainer bottom and seal top to verify there is at least .030" more then the cam lift. Doing so will assure a accurate installation.
Vortec heads normally use: 11/32" X .552" seals but we have seen some guides measure up to .558". If you need seals for .556"-.558" guides, check our seal selection for availability.
* This kit is also good for use on stock to mild Hydraulic roller vortec engines. Spring output is higher then stock and will increase the RPM when used with stock to mild cams also. I'd say it's safe to use for up to 218 degrees durantion @ .050" w/ up to .550" lift. Hyd roller cams bigger then this should use our Vortec spring kit w/ 130 Lbs seat pressure.
NOTE-1- Spring installed height must be checked and shimmed as necessary.
NOTE-2- Not for Gen III LS series Vortec. Check our other spring kits for late model Gen 3 applications
NOTE-3- We do not recommend the use of "HOWARDS" brand self aligning rockers. Due to their bulky design, clearance between rocker and retainer are either limited or non existant. Most other brands of self aligning rockers work fine. Be sure to verify suitable clearances exist.
OPTIONS; Buyers may choose from several different companion items required for proper valve spring kit installation. At the top of this page, there are several check boxes.
There are two versions of shims available; Hardened and Std. (we recommend going with hardened) Our Viton valve seals fit stock vortec guide boss diameters of .552"-.556"(stock)
The installed height micrometer is a modified version which fits Vortec heads. The way these tools come from the factory, they won't fit over the Vortecs large guide diameter at the base, our vortec tools have been specially machined to sit further down than std production installed height tools, a must for Vortec applications.
Alex's Parts- The smart choice in valve train parts~