Cam and valvetrain longevity....??? low duration high lift...
#161
Gold Member
![](https://www.offshoreonly.com/forums/images/icons/gold_member_star.gif)
Thread Starter
Join Date: Oct 2005
Location: Olmsted Falls,Ohio Marblehead,Oh
Posts: 11,635
Likes: 0
Received 204 Likes
on
132 Posts
![Default](/forums/images/icons/icon1.gif)
I am tempted if someone wants to load intakes and carbs to see, I would run with hatch off boat for clearance, if it went 4 mph faster I would find a way to make it work.... Then again Dyno shows I'm using 850 CFm...... So not sure if it's the issue.
![Full Force is offline](/forums/images/statusicon/user_offline.gif)
#162
Registered
![Default](/forums/images/icons/icon1.gif)
In response to post just above , hook vacuum gauge under carb and see what the vac is at WOT andtop rpm. This will tell you if carb is a decent restriction or not. Most carbs don't flow as advertised...just to add to confusion.
![SB is offline](/forums/images/statusicon/user_offline.gif)
#164
Registered
![Default](/forums/images/icons/icon1.gif)
I installed same cams and heads in/on a pair of 496's for project and made 600 hp plus @ 5,800 however used solid springs and lifters do to a combination of spring and hyd lifter issue that we discovered on the dyno. I didn't wanna mess around and take a chance on another set of hyd lifter failure. Lifters initially used were crower 66321. How much advance was ground into the cams initially I don't recall.
![getrdunn is offline](/forums/images/statusicon/user_offline.gif)
#169
Registered
![Default](/forums/images/icons/icon1.gif)
Those cams were making 650 hp with just out of the box pro one 310's. I would amagine another 50 hp plus if heads and intakes were reworked.
I installed same cams and heads in/on a pair of 496's for project and made 600 hp plus @ 5,800 however used solid springs and lifters do to a combination of spring and hyd lifter issue that we discovered on the dyno. I didn't wanna mess around and take a chance on another set of hyd lifter failure. Lifters initially used were crower 66321. How much advance was ground into the cams initially I don't recall.
I installed same cams and heads in/on a pair of 496's for project and made 600 hp plus @ 5,800 however used solid springs and lifters do to a combination of spring and hyd lifter issue that we discovered on the dyno. I didn't wanna mess around and take a chance on another set of hyd lifter failure. Lifters initially used were crower 66321. How much advance was ground into the cams initially I don't recall.
![MILD THUNDER is offline](/forums/images/statusicon/user_offline.gif)
#170
Registered
![Default](/forums/images/icons/icon1.gif)
Originally Posted by cfm
by badss540 » Fri Dec 03, 2010 9:49 am
My 540 (built at SSRE) had 10 to 1, dart 325's,dart manifold,1090 BG carb,Merlin 3 block, (Crane)651 hyd roller and made 691 at the crank..
by badss540 » Fri Dec 03, 2010 9:49 am
My 540 (built at SSRE) had 10 to 1, dart 325's,dart manifold,1090 BG carb,Merlin 3 block, (Crane)651 hyd roller and made 691 at the crank..
Originally Posted by MILD THUNDER View Post
700hp from a 540, with race car headers, 10:1 compression, really isnt setting the world on fire. .
I was giving an example of something similar to FF's builds but with Dominator and 651 cam....was dyno'd with no accessories and dyno headers.
700hp from a 540, with race car headers, 10:1 compression, really isnt setting the world on fire. .
I was giving an example of something similar to FF's builds but with Dominator and 651 cam....was dyno'd with no accessories and dyno headers.
Last edited by SB; 09-19-2016 at 04:59 PM.
![SB is offline](/forums/images/statusicon/user_offline.gif)