Max RPM also has more to do with rod bolt dimension and valve overlap and clearance. The smaller the rod bolt diameter the more likely to stretch at higher RPMs. The less clearance and larger overlap, the more chance you have that the valve spring will not close the valve as fast as the piston that is racing towards it. Valve/Piston contact is generally bad...

 

What's that have to do with anything? Those 3.0's are still going to have the best available power band for their size. If that means they all rev to 12,000rpms or 1200rpms, so be it. Max RPM still doesn't mean anything.

I think Shadowboy told me those F1 cars have something sick like a 8000rpm power band. You'd have to be a fucking retard to fall out of the maximum band!

 

Nobody has a 8000rpm's power band. Everybody has peaks. and of course Max RPM's can make a difference. If I am racing at Sebring in similiar cars = and I can do the back straight in 4th gear to 8,300 rpm's at 145 and my competition can only rev to 8,000 and 142 mph before braking and I can make a 1/2 second per lap difference. than in a 50 lap race, that's 25 seconds. A lifetime in a road race.

 

Alright, I'll bite. I guess max RPM does make a difference when you're looking at something like that. Those extra 500rpm technically twist your gears that much faster making your top end that much higher. The same could also be acheived with slightly taller gearing though.

 

That would be true if it were like cars coming out of the corner at the same rpm to start with.
But if car A comes out of the corner and nails it at 5000 rpms and runs it up to 8200 before braking. And car B comes out of the corner at 4800 rpms (Different power band than car A) and runs it up to 8000rpms before braking. They have both maximized there power band and didnt have to let up or shift before a turn.

In short if you can produce a solid 3rpm power band you are doing good.

 

If they are running the same gear ratio, same size tire then the one that revs to 8200 rpm's will be going faster. That's pretty simple.

 

Yes thats why i said if they were like cars.

 

7k for my v8 too... don't make power after 6250 though.

 

I can spin mine to about 4k before valve float.

 

Frank is technically right. I you have two identical cars, then sure, the one spinning the engine higher will probably make more power.

But if car A makes his 300 hp at 5000 rpm, and car B makes his 300 hp at 9000 rpm, well, obviously car A doesn't need to swing the tach all the way up there.