351 Mustang

351 bored 30 over = 408??

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Old 02-18-2009, 12:28 AM
  #1  
1fast 99gt
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Default 351 bored 30 over = 408??

so i thinking of buying this car with a 351w bored 30 over. does that make it a 408 then?
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Old 03-17-2010, 06:38 PM
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johndeeregreen
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Default No that makes it a 356

.030 brings it out about 5 cubic inches you need a 4.1 crank to equal a 408
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Old 03-17-2010, 07:54 PM
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Venomantidote95
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Default

You need a 4 in crank to get the 408 it works out like this:

4.030 X 4.030 X 4 X 8 X .7854 = 408.179 cu in!

4.030 X 4.030 X 3.5 X 8 X .7854 = 357.156 cu in!

4.030 X 4.030 X 4.1 X 8 X .7854 = 418.383 cu in!

unless the crank in the car has 4 in stroked crankshaft and a .030 piston then it is only a 357 cu in 351!!!!
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