Dyno Graph for CC306
Banned
Joined: Aug 2001
Posts: 3,505
From: looking for a flow bench so Brook and I can race
what bothers and impresses me at the same time is your torque curve-
it only varries ~35ft lbs from 3000 all the way to 6000 rpms
i really thought the 306 would pull harder in the upper bands, especailly with such a big exhuast lope
or maybe its just pulling hard down low...
If i had to guess, no offence, but this looks like a hotcam dyno
it only varries ~35ft lbs from 3000 all the way to 6000 rpms
i really thought the 306 would pull harder in the upper bands, especailly with such a big exhuast lope
or maybe its just pulling hard down low...
If i had to guess, no offence, but this looks like a hotcam dyno
Texas Moderator (1998-2009)
Joined: Dec 1998
Posts: 1,301
From: DFdubya, Tx.
Here's mine.... 306 w/ home ported heads... LT's, 2.5ich y-pipe, and 52mm tb.
http://mywebpage.netscape.com/Shawn9...adbar_dyno.gif
http://mywebpage.netscape.com/Shawn9...adbar_dyno.gif
Texas Moderator (1998-2009)
Joined: Dec 1998
Posts: 1,301
From: DFdubya, Tx.
Oh.. oops - my car is the blue lined dyno. 38X rwhp..
And both curves do have a slight dip in the same location, kinda like you point out Trey.
And both curves do have a slight dip in the same location, kinda like you point out Trey.
Last edited by Shawn 97 Z28 M6; May 13, 2003 at 10:40 PM.
Registered User
Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
mustang dynos always post way lower numbers than a dynojet because the mustang applies loads and variables can be changed to make it more like real world conditions
you cannot compare a mustang dyno sheet to a dynojet sheet.
your e/t and trap speed is the real indicator of how well its running, and it looks like your heads might be the problem.
you cannot compare a mustang dyno sheet to a dynojet sheet.
your e/t and trap speed is the real indicator of how well its running, and it looks like your heads might be the problem.
Texas Moderator (1998-2009)
Joined: Dec 1998
Posts: 1,301
From: DFdubya, Tx.
Hrmmm.. Only finishing in 3rd might pose a slight problem. What gears are you running?
On 28's I run 12.0's@115.... on DR's it's high 11's at 116 - 117mph was my best, in the same conditions I ran 115 on the 28" ET drags.
For comparison's sake anyway... No telling what my car runs now as I switced to the 230/236... But it does have more torque down low - vs. the 306............ and starts putting out more power @ 4800 or so.. Has 10rw vs the 306 @5800 - where it hit valve float last time to the dyno.
On 28's I run 12.0's@115.... on DR's it's high 11's at 116 - 117mph was my best, in the same conditions I ran 115 on the 28" ET drags.
For comparison's sake anyway... No telling what my car runs now as I switced to the 230/236... But it does have more torque down low - vs. the 306............ and starts putting out more power @ 4800 or so.. Has 10rw vs the 306 @5800 - where it hit valve float last time to the dyno.
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Originally posted by Shawn 97 Z28 M6
Hrmmm.. Only finishing in 3rd might pose a slight problem. What gears are you running?
On 28's I run 12.0's@115.... on DR's it's high 11's at 116 - 117mph was my best, in the same conditions I ran 115 on the 28" ET drags.
For comparison's sake anyway... No telling what my car runs now as I switced to the 230/236... But it does have more torque down low - vs. the 306............ and starts putting out more power @ 4800 or so.. Has 10rw vs the 306 @5800 - where it hit valve float last time to the dyno.
Hrmmm.. Only finishing in 3rd might pose a slight problem. What gears are you running?
On 28's I run 12.0's@115.... on DR's it's high 11's at 116 - 117mph was my best, in the same conditions I ran 115 on the 28" ET drags.
For comparison's sake anyway... No telling what my car runs now as I switced to the 230/236... But it does have more torque down low - vs. the 306............ and starts putting out more power @ 4800 or so.. Has 10rw vs the 306 @5800 - where it hit valve float last time to the dyno.
Ryan
Texas Moderator (1998-2009)
Joined: Dec 1998
Posts: 1,301
From: DFdubya, Tx.
Originally posted by 96-speed
Your car is interesting Shawn. I'm sure you've heard everyone going on about how "hard" the extreme series is on valvetrain. Seeing how it makes more power over the 306 indicates its doing something a little different! However, I wonder if this is the point where the extreme's "new technology" shows us that you can only push the edge so far (steep lobes + hyd lifters + revs) until you need to up the ante to a solid roller.
Ryan
Your car is interesting Shawn. I'm sure you've heard everyone going on about how "hard" the extreme series is on valvetrain. Seeing how it makes more power over the 306 indicates its doing something a little different! However, I wonder if this is the point where the extreme's "new technology" shows us that you can only push the edge so far (steep lobes + hyd lifters + revs) until you need to up the ante to a solid roller.
Ryan
Out of ideas now. LOLI'm pulling the heads off once again next month for a full out race port and am going to join the solid roller club... Figure it might take a set of R's to make my car rev... I say screw it and pick up power all around.
FWIW, my car seems to be an isolated incident.. No other cars have the same problem w/ this cam that I'm having. ah well.
Thread Starter
Registered User
Joined: May 1999
Posts: 1,173
From: Portage, MI USA
Originally posted by treyZ28
what bothers and impresses me at the same time is your torque curve-
it only varries ~35ft lbs from 3000 all the way to 6000 rpms
i really thought the 306 would pull harder in the upper bands, especailly with such a big exhuast lope
or maybe its just pulling hard down low...
If i had to guess, no offence, but this looks like a hotcam dyno
what bothers and impresses me at the same time is your torque curve-
it only varries ~35ft lbs from 3000 all the way to 6000 rpms
i really thought the 306 would pull harder in the upper bands, especailly with such a big exhuast lope
or maybe its just pulling hard down low...
If i had to guess, no offence, but this looks like a hotcam dyno
Shawn97Z28,
I am running 4.10's in my Moser 12 bolt. I was shifting at 6800 and the car still ran 12.4@109. I am thinking that if I get back to 26" tires and shift at 6400 then I should have a much longer pull in 4th which should help the MPH.
