Below are the available bulk discount rates for each individual item when you purchase a certain amount
Fits Factory Heads, no machining required.
High Performance, High Lift Valve Spring Kit for SB FORD GT40P
Application: Hydraulic Roller, up to .560" Lift*
Fitment: GT40P, E7 and other 302 heads w/ .393"/.481" tip length valves
Our High Performance valve spring kits are specially engineered to suit SBF heads with staggered tip length valves which incudes GT40P and E7 heads.
Unlike some of the earlier SB Fords where the valve tip lengths were the same for both intake and exhaust, GT40P heads use two different lengths.
They normally have .393" tip length intakes and .481" tip length exhausts.
Since the goal is to use the same high performance springs on all sixteen valves, a special retainer and lock combination is are required.
Our drop in valve spring kit is engineered to fit these heads with outstanding results.
The kit comes with locks which are marked for Intake and Exhaust.
Our performance springs fit GT40P heads without additional modifications, no machine work required. Just set up the installed heights and assemble.
Designed for mild to moderate high performance Hydraulic Roller cams, our kit will handle most cams up to around 234 degrees duration @ .050".
If you need help determining if these will work with your cam, just send us an e-mail with the cam specs or better yet, the cam brand & part number and a link to the specification page. We'd be happy to verify compatibility.
Works great with many of today's popular Motorsport, Trick flow, Comp & Lunati performance cams.
Suitable for 1.6 and 1.7 ratio rocker arms as long as the lift does not exceed .560"
PARTS UPDATE- NEW ITEM Just in- Oversize length GT40P, GT40 & E7 Pushrods w/ 6.315" length. Enter 6.315" into search engine for details! (not included w/ spring kit)
Our GT40P spring kit is the finest drop in Gt40 spring kit available anywhere.
Excellent valve control w/ High Performance cams up to 236 degrees duration @ .050".
Applications with larger cams should one of consider our Max Output or one of our Dual Spring Kits. Keep in mind that dual springs require spring seat machining.
For specifications on Max Output spring kits, check our other spring kit advertisements.
Requirements- Measure valve spring height during installation. For more information on setting up valve spring installed height, read the information we has available under the "Valve Spring Shims" category.
Buyer can add: Shims, Seals or a valve spring height micrometer by checking the boxes at the right of the pictures. These items are added in at slightly discounted prices with reduced shipping rates. Although we also offer std shims, we recommend using hardened shims with this kit.
*Note: We purchase our GT40/GT40P valve springs in large batches, usually 5000 pieces at a time. Although we order the same part number, with each batch comes some variation in lift range and/or installed height. We try to keep the specifications listed current which is why the max lift can vary from time to time. Sometimes the batch will offer a higher lift range while other times they will be less. Variation is common between production runs, even the same part number from the exact same manufacturer. The current batch of springs have a .560" max lift limit. If you have an application which needs a higher lift limit, feel free to contact us to check availability as we probably have them available. Yes, the higher lift springs will cost a little more.
Alex's Parts- The smart choice in valve train parts~