info on n/a engines what cam
03-11-2004, 05:32 PM
#1
Registered
Thread Starter
Join Date: Nov 2002
Location: Champaign, IL
Posts: 654
Likes: 0
Received 0 Likes
on
0 Posts
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
what kind of hp and torque you got.??
getting ready to order parts here..
Thanks in advance,
Don
03-12-2004, 07:29 AM
#4
Registered
Join Date: Feb 2002
Location: KY
Posts: 1,099
Likes: 0
Received 0 Likes
on
0 Posts
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.
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.
03-12-2004, 09:15 AM
#5
MarineKinetics
Platinum Member
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
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
03-12-2004, 04:21 PM
#7
Registered
Thread Starter
Join Date: Nov 2002
Location: Champaign, IL
Posts: 654
Likes: 0
Received 0 Likes
on
0 Posts
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
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
Last edited by chromecat; 03-12-2004 at 05:44 PM.
03-13-2004, 08:43 AM
#10
Registered
Join Date: Feb 2002
Location: KY
Posts: 1,099
Likes: 0
Received 0 Likes
on
0 Posts
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.
3800-7000 range per Crane...A 572 needs at least this much cam if you want to make power.
