info on n/a engines what cam
 

wondering if anyone is using a 731 crane cam in a 540,572..... with good aluminum heads and and and...

what kind of hp and torque you got.??

getting ready to order parts here..

Thanks in advance,
Don

731 is WAY too small for 540 and esp 572. 741 at a minimum for 540 and next one up for 572

where is the power range for the 741 at ?

3000-6500 per Crane

peak TQ is ~4600 and it starts running out of power above 5800. 741 is ground on 107* and it works well there but even better installed on 112* from what I've heard.

741 is an excellent Cam for a 540. A 572 would be a little choked in my opinion.

Don,
There are many data points to consider when making the correct choice of camshaft;
Compression ratio
displacement
head flow
exhaust configuration
desired power band
You would not want the 651 cam in a pump gas 8.8:1, wet exhaust motor that wasn't going to see 5500 rpm
Bob

what is the 651 cam...

for the record... my plan is this..

572. 4.5 bore and stroke. tall deck big M
either 8.75 or 9:1 compression
aluminum canfield heads.. 119 cc, fully ported 350's. with 1.900 and 2.325 valves
dart intake and demon carb... 1090 cfm or whatever it takes...
dry exhaust to the transom.

Don

Use the 651 cam.

what are the specs on the 651

244/[email protected] .632/.632" lift

3800-7000 range per Crane...A 572 needs at least this much cam if you want to make power.:cool: