Re: Cross Ram carb size

[Dodger7998@xxxxxxx]

In a message dated 5/7/2007 4:07:17 PM Central Standard Time,  
jaltemoose@xxxxxxxxx writes:


Dodger,

I'm missing something here.  Let's say I have a  426 and want 5000 RPM


SORRY,,,,,,,,,I ENGAGED FINGERS BEFOR ENGAGING MIND,,,,
 
it should have read,,,,,,,,
 
1.  engine cubic inch times desired RPM
 
2.  the # derived at in #1 times .5 (this is because it takes two  engine 
revolutions to create one intake stroke)
 
3.the # derived at in #2 divided by1728 (this is 12 x 12 x 12, or the  
equivilent of 1 cubic foot, which turns your #2 anwser from cubic inches to  cubic 
feet)
 
4.  the # derived from #3 multiplied by 1.2  (the 1.2 factor is  because 
everything does not always work and it does on paper, and the .2 is an  adjustment 
for air flow )
 
5.  the # derived in #4 is the size of carburetor needed, but in you  case 
must be divided by 2 because you have 2 carburetors, so divide #4 by  2
 
6.  with this number you have calculate the size of carb that you need  to 
run, take the 
number, and buy the next higher common size carbs,,,,,,,,,,probably  500s



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