Quote:
Originally Posted by oldblu65
At last fall's FIA meet at Bonneville , a streamliner powered by a twin turbocharged small block Chevy engine ( 347 c.i. - 2077 HP ) set the record at 462 MPH . The same car with a smaller ( 300 c.i. engine - 1980 HP ) went 390.709 MPH !
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Something doesn't sound right about the HP-MPH #'s.
Only 97 HP difference to gain 72 MPH?
As MPH increases, the HP requirement goes up almost exponentially. From my drag racing experience, (with a heavy, 3750# car), it took approximately 115 HP increase, (from 325, to 440 HP), to improve from 96MPH in 13.4 seconds, to 110 MPH in the 1/4 mile, (12.3 seconds). That is a 14 MPH gain for 115HP.
To get same car to the 11-flat ET range, at 122 MPH, required almost 200 additional HP, (637 HP). Those 197 horses only gained 12 MPH. If those guys went from 390 MPH, to 462, with only a 97 HP increase, (1980-2077), that is remarkable.