what is the rpm range for a 731 cam?
 

Ive got a 731 in a carb'd hp500. whats the dropoff point? Im hitting 5600 and wondering if im hitting a wall. I was about to put on a taller set of props when i think a head gasket went. just curious where this thing is dropping off in power.

Re: what is the rpm range for a 731 cam?
 

I would think your close

Re: what is the rpm range for a 731 cam?
 

You might be past it already. Try a 741 if you like to rev that high.

Re: what is the rpm range for a 731 cam?
 

I dont like to rev that high. I would have went with the 741 if i didnt have the gils.

Im just wondering if im running out of power and can twist a bigger prop. i guess only one way to find out :D

Re: what is the rpm range for a 731 cam?
 

Good idea on the bigger prop. :cool:

Re: what is the rpm range for a 731 cam?
 

My motor was starting to falling off on the dyno above 5500 with that cam.

Re: what is the rpm range for a 731 cam?
 

On the 741 cam
Mine has mild ported heads and is blown ,it pulled to 6200 ok.

Maybe Mike280 will chime in ,he and his bro has a lot of experance with these 2 cams!!

Rob

Re: what is the rpm range for a 731 cam?
 

Lifters may be giving up. . .

Re: what is the rpm range for a 731 cam?
 

My HP motor would spin 5800 with the 741 no problem. Not that I ran it that hard all the time. Also was running the merc/Gil exhaust with silent choice.