* Camshaft Upgrade #7 ~ Racer Brown = .480 / .480 Lift ~ 294* / 294* Duration = {322 HP} = 12.51 @ 107.77 MPH
* Camshaft Upgrade #6 ~ Crower Camshaft = .477 / .477 Lift ~ 280* / 280* Duration = {310 HP} = 12.62 @ 106.99 MPH
* Camshaft Upgrade #5 ~ Norris Camshaft = .466 / .466 Lift ~ 270* / 270* Duration = {304 HP} = 12.77 @ 106.52 MPH
* Camshaft Upgrade #4 ~ Crane Camshaft = .446 / .467 Lift ~ 288* / 298 * Duration = {303 HP} = 12.72 @ 105.72 MPH
* Camshaft Upgrade #3 ~ Crower Camshaft = .447 / .447 Lift ~ 268* / 272* Duration = {299 HP} = 12.80 @ 106.86 MPH
* Camshaft Upgrade #2 ~ General Kinetics = .435 /. 441 Lift ~ 282* / 282* Duration = {294 HP} = 12.87 @ 106.45 MPH
* Camshaft Upgrade #1 ~ Camcraft Camshaft = .440 / .440 Lift ~ 260* / 260* Duartion = (280 HP) = 13.04 @ 104.97 MPH
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The Racer Brown ST-12 was 'super impressive'. Launched at 5700 RPM's, and it pulled like a 'monster' out of the hole.
The 273 'screamed' right up to the 6800 RPM 'Red Line'.
Great pull thru Bottom-End and Mid-Range.
Valve-Springs {268 lb.. Load-Rate} were a touch 'shaky above the 6500 RPM range.
The Valve-Train 'peaked' about 100 feet from the Traps.