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Old 03-18-2008, 10:30 AM
red65mustang red65mustang is offline
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the "catch 22" of building a street (low) rpms performance motor is that there is not a hell of alot of power (TQ) there to begin with to add onto....

the rv 204/214 cam will make almost as much TQ at 2k as the stock 190/202(?) cam for good normal acceleration....and a bit quicker "wind up" for passing a truck (with your relatively tall 2.73 gears good for mpg)

any cam much bigger kills that 2k street rpms number.... DD example from another thread on a 8.5CR motor:

222/222 vette cam=72ft/lbs @1k, 243ft/lbs@2k
same motor with a oem 190/209= 160ft/lbs @ 1k, 309ft/lbs @ 2k

243ft/lbs vette cam x2.73 gears=663ft/lbs at the tires
309ft/lbs stock cam x 2.73= 843 ft/lbs at the tires= roughly 30% more actual force twisting the hides at 2k rpms

bottem line is the "stock" motor build (250hp?) is the most and soonest maxTQ possible in the street rpms range...stock small 2V, stock intake, stock cam, etc....takes alot of careful planning and tweeking to actually get more TQ at street rpms than a plain vanilla 8.5CR 87octane 350

a year of planning and 2 years worth of tweeking my 208/214 cam 302 motor and I do know it would perform better driving normal with a stock 289 cam...but I don't want to give up 0-60mph in just a tad over 5 seconds with 3.55 gears and chirping the tires on the 1-2 shift with a automatic

Last edited by red65mustang; 03-18-2008 at 10:44 AM.
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