This white shaker 440-6 4 spd cuda I have here was built by me 15 yrs ago. 906 race ported heads 11/1 comp 410 dana and 14 inch tiny tires. The guy lives in Baton Rouge area. He would drive to the Mobile to the battleship car shows, on the interstate 10 at 3800 rpms all the way. He drives to New Orleans all the time, always between 3500 and 4200. After all these years, he still has 80 lbs of oil pressure. This is not an everyday car tho. I would assume he should be needing valve springs sooner or later, but the engine turns like it should. If clearances are right, they dont get hurt. He was here 2 weeks ago and we got his car out. He drove it 35 miles at close to 4000 , that's how I know what he runs.
