Valves - just about stock (small size). Used new (Farias I think) due to extreme seat pressure of mechanical roller cam.
Valve springs - K-Motion for Mechanical Roller Cam.
Cam is a brand new 1986 Lunati grind. I met this gentleman at ATCO over 20 years ago and was amazed at his running a full weight metal Ford Falcon in the high 10 second bracket with stock 302 Windsor heads! He was nice enough to have Lunati share this grind with me (thru ATI in Md.) and it stayed new in the box until 2005 when I rebuilt the motor.
Cam Lift - .660" w/Harland Sharp 1.6 rocker arms.
Duration - 268 Deg. @.050" intake and 273 Deg. @ .050" exhaust (I believe.) I have been thinking about trying the new Lunati VooDoo series cam and am sure the folks at the factory would have even newer grinds too for any of our interested members.
This is an odd engine by today’s standards as the cubic inches are tiny at 289 x 1.030 and the heads are tiny high compression units dimensionally very close to un-ported stock HIPO 289 castings. The Carb is a Holley 650 CFM but I ran an Autolite 600 CFM 4100 on this motor for years and recently put the same Carb on the Dyno with my marine 289 and made essentially the same HP as the Holley (2-3 HP more with the Autolite that had 68/72 jets vs. the lean Holley 67/71 street jets that are in the car in the video.)
When I was a kid, I used to read Superstock Magazine; there was an article on a "K" 2+2 Mustang called "High Winders" that stuck with me until I could build this motor many years later. In NHRA Superstock in those days, if not now, you could optimize the clearances ("blueprint" the motor) but the heads pretty much had to be stock. So in summary the breathing improvements seemed to come from the cam!