At the moment, the going price is $500. I would assume stage 1 would be optimum because even with a tune, 6800 RPM is quite high, and the point where it starts to build power is low enough to make it useful for DD'ing.-Street (Stage 1) Applications power from 2600-6800rpm .423 intake and .419 exhaust valve lift, 252 intake and 256 exhaust duration advertized (210 intake and 212 exhaust @ .050" duration) Works best with computer modifications not required.
-Street & Strip (Stage 2) Applications power from 3000-7500rpm .440 intake and .436 exhaust valve lift, 258 intake and 262 exhaust duration advertized (216 intake and 218 exhaust @ .050" duration) Requires computer modifications
-Street & Strip high RPM (Stage 3) Applications power from 3500-8000rpm .456 intake and .453 exhaust lift, 264 intake and 268 exhaust duration advertized (222 intake and 224 exhaust @ .050" duration) Requires computer modification very strong power over 5000 RPM
Idle is set by whoever tunes it.What would the idle be like on a stage III cam, and would I be safely able to hit 8k RPM even with 75# valve springs?