Kelford Nissan VR38DETT Valve Springs (GT-R) Kelford Cams KVS38-BT is engineered to match our Nissan VR38DETT engine camshafts for the ultimate in quality, performance and reliability. Progressively wound Pacaloy™ Beehive Valve springs. Intake; 36.75 installed height, 80lb closed pressure... MSRP: Was: Now: $870.00 Add to Cart