731-741 or 502/502 cam?
#11
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I decided to keep my Merc ignition with the Rev limit "set" at 5350rpm decided to use the 731 instead of the 741 for the above reasons. I am very happy with it and my overaul performance.
I have turn key engines that have a great idle and no loading or reversion.
I have turn key engines that have a great idle and no loading or reversion.
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#13
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go to www.cranecams.com
specs:
731 is 226/234 .587/.610" lift
741 is 234/242 .610/.632" lift
I'd suggest shooting for 5800 and running the 741 cam. Don't be afraid to turn some rpm!
For reference, a stock 500EFI cam is 230/236 .598/.610".
specs:
731 is 226/234 .587/.610" lift
741 is 234/242 .610/.632" lift
I'd suggest shooting for 5800 and running the 741 cam. Don't be afraid to turn some rpm!
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For reference, a stock 500EFI cam is 230/236 .598/.610".
#14
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Originally Posted by Pantera28-650HP
How would either of these cams work in a blower application. Lower boost 5 - 7 PSI?
Where are the spec cards for these cams?
I am in the search for a new cam for my motor also.
Not trying to steal your thread Migara422!!
Where are the spec cards for these cams?
I am in the search for a new cam for my motor also.
Not trying to steal your thread Migara422!!
Last edited by mikes280; 05-23-2005 at 09:16 PM.
#15
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Are the 741 and 731 cams ground on the same LSA for blown and NA motors? For some reason I thought I saw they are available on 112 for NA and 114 for blower apps. Just curious and thought it may be good for these guys to know when shopping.
Craig
Craig
#17
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I have all the take out valve train out of my 500efi. The 500 efi cam is real close to the 731 cam.I even have the valves and Crane rockers
I put the 741 in my blower motor.It worked good with the blower.
If you are going to buy new ? Call [Bob] RMbuilder and have him design one for your aplication it will be real close to the same price . He just did one for a member on this board and it picked up 9 MPH!!!
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I put the 741 in my blower motor.It worked good with the blower.
If you are going to buy new ? Call [Bob] RMbuilder and have him design one for your aplication it will be real close to the same price . He just did one for a member on this board and it picked up 9 MPH!!!
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#19
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I agree. the 741 for the blower is better. 731 for n/a. And to get all the torque, oval ports.
With the blower, rectangle ports and the 741. I have one in perfect condition if interested.
DAVE
With the blower, rectangle ports and the 741. I have one in perfect condition if interested.
DAVE