Product Details Lingenfelter offers these upgraded Corvette leaf spring ride height adjusters made with Delrin instead of the factory rubber adjusters. The stiffer Delrin offers more immediate spring response for better performance. Delrin spring adjusters will transmit more road noise than the factory rubber adjusters and can be used with GM T1 suspension kit springs and Hyperco aftermarket leaf springs.

The following are installation and adjustment procedures for all C5 1997-2004 Corvette Roof Panels.

Delrin spring height adjusters are available for the following vehicles and are sold each. 1997 - 2004 C5 Corvette - Front - requires a quantity of 2 2005 - 2008 C6 Corvette - Front - requires a quantity of 2 2005 - 2008 C6 Corvette - Rear - requires a quantity of 2 2.195 inch diameter.366 inch pad thickness.

Lingenfelter Performance Engineering was founded over 46 years ago and is a globally recognized brand in the automotive performance engineering industry. Lingenfelter offers engine building, engine & chassis tuning components and installation for most GM vehicles. Pc study bible. Mission Statement Driven by our racing heritage, at Lingenfelter Performance Engineering our mission is to deliver premier quality performance parts, vehicles, and service. We offer industry leading in-house performance engineered products - committed to a winning customer experience. 'Winning performance through innovative engineering'.

Radioflyer97's How-To Post #15: How to adjust the C5 windows for road noise. This is a follow up to my previous 'how to replace a window regulator' thread. Those of you non-vert owners who are suffering from annoying wind noise: there's a simple procedure to solve this. 1) The front lower mount of the window regulator (located under the door and hidden by a small rubber seal) has about 1-1.5' of transverse adjustment. Loosen the 10mm nut and move the bolt towards the outside to increase the window pressure against the weather seal. The next two require removal of the door panel. 2) If you've just replaced the window or window regulator, check the horizontal position of the window relative to the rest of the car.

There should be roughly 1/4' between the rear edge of the window and the lower window seal on the door. If you're hearing wind noise from the front or back part of the window only, this will solve your problem. 3) If either of the above solutions fail to solve the problem, there's a 3rd adjustment you can do.

The lower rear track mounting bolt has an adjustment. There are 2 sides of the bolt. The outer side is the adjustment side.

I believe it's a 3/4' nut head and turning this will increase or decrease the pressure of the window against the weather seal.