I'm trying to give a full accounting of the engine components for this build and I have little to no info. These are double valve springs w/o damper and have a dark greyish/goldish hue. They measure 2.334" total uninstalled height, Coil Bind at .973, O.D. is 1.537", 2nd O.D. is 1.118" and I.D. is .816". They have a seat pressure of 200lb with installed height of 1.879", Open Pressure is 500lb at 1.319" (Measured for .645" valve lift for solid roller cam).
Anyone have a clue as to who made these ? I've searched, Crane, Comp, Lunati and tried to match it up to something they sell but no luck. Any additional info needed or if I've missed something, just let me know.
Thanks, Jim