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Original Message
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| RE: cams and rpm's |
| By rick - 08/25/2002 10:00:28 PM; IP 205.188.209.76 |
just my nickels worth; a cam 3000-6000 rpm
a 390 can handle that but...
heavy car, it is going to be driven on the street, probably most of the time. where is the torque that it is going to take to get the weight moving? there is no low end torque with a cam that size. so often, the mentality is, if a big cam is good, then bigger should be better. much of the time bigger is not better. keep all components in mind, so they all work together, in the same rpm range.
for mostly street driven something that is in the 1500 or 2000 to 5000 rpm range will work good and be very streetable. stay with shorter duration and go with more lift you will be much happier.
i just ran this from an rpm calculator ;
3.50 to 1 rear ratio - 60 mph - 28" tire = 2520 rpms
at cruizing speed you would still be 500 rpms short of the bottom of the power range of the 3000-6000. :-(
if it is a lot of race then things are all different.
good luck
rick |
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