Coming Soon! Maximum Output- Drop in Valve Spring Kits for GT40 and GT40P. Use w/ large cams, Turbo, Nitrous and Supercharged engines.

We've been working on several new valve spring kits for our GT40 and GT40P customers. The new kits are focused on applications where more seat and open pressures are required.

Applications such as:

• Long Duration Cams- up to 258 degrees @ .050"
• Aggressive Lobe Profiles
• High Boost Turbo and Supercharger engines
• Nitrous engines w/ big cams

The problem in the past has always been the need to have the heads machined to accept dual springs. We have been testing several high output drop in springs with killer results. That's right, this spring fits the heads without machine work making them a drop in fit.

We have not officially released them yet but it they're coming soon. These two new kits can be installed to produce 130 to 150 Lbs seat pressure and will make between 375-435 Lbs open pressure. (depending on final lift)

The unofficial part number will be: VSK7A-M49X and VSK7A-M48X

These will be the highest output drop in springs available for this application and will be an Alex's Parts exclusive. The final price is yet to be determined but as with all our parts, we are committed to offer the highest quality with the lowest prices and this kit will be priced very well.

If you have any questions, use the "contact Alex's Parts" tab at the top of the page.