It will vary based on your suspension - the trick is to lower it enough that you hook up without causing problems. I honestly experimented like crazy to find the ideal pressure for me, and it seemed like I had the best results at around 24PSI - ironically, the only real gain was a little more consistency, as I've pulled 1.7x 60' times at 36PSI, heh. Lower than 24PSI and it seemed too much of a spin/bog scenario with the way I launched.
That said, many people recommend going as low at 14PSI...
Incidentally, good luck on your quest for low 60' times! Be prepared to fry your clutch.
Update us on how it went when you're done.
-Pete
That said, many people recommend going as low at 14PSI...
Incidentally, good luck on your quest for low 60' times! Be prepared to fry your clutch.
-Pete