those numbers are good. let it get cooler out and you should see a bigger gain in hp's
Dyno numbers seem low for mods (C6Z06)
Thread Starter
Burning Brakes
Joined: May 2006
Posts: 893
Likes: 1
From: Lubbock, TX
Dyno numbers seem low for mods (C6Z06)
This was done last month in the middle of the texas heat but I still expected better numbers.Conditions per the dyno sheet were 110.54 deg 16 %humidity, 28.86in HG. = 523.27RHP, 489.24RTQ
Mods: stock heads milled .030
Stalker cam (224/246 115)
LG Super Pro headers 1-7/8 w/cats
FAST 102 w/stock injectors on FAST rails
NW TB
TR6 plugs (.035)
Halltech CF112
LSX9 clutch
stock thermostat (coolant was around 200 during the runs)
Bone stock dyno for comparison. June 08
Mods: stock heads milled .030
Stalker cam (224/246 115)
LG Super Pro headers 1-7/8 w/cats
FAST 102 w/stock injectors on FAST rails
NW TB
TR6 plugs (.035)
Halltech CF112
LSX9 clutch
stock thermostat (coolant was around 200 during the runs)
Bone stock dyno for comparison. June 08
Last edited by spdmn75; Sep 14, 2011 at 10:58 PM.
Safety Car
Joined: Dec 2009
Posts: 4,754
Likes: 303
that dyno graph scaling makes it look like you have a weird powerband, but once you get your bearings on the chart it looks ok.
That's pretty hot air even though the motor wasn't hot. I bet it would do ~550whp in 70-80* weather.
That's pretty hot air even though the motor wasn't hot. I bet it would do ~550whp in 70-80* weather.
Race Director
Joined: Dec 2005
Posts: 11,885
Likes: 107
From: God's Country, ID
Well, from what I've seen on here, just hook-it-up to a Mustang Dyno and you'll probably hit 600rwhp!
Don't be overly focused on HP. I've seen plenty of graphs of 500+rwhp H/c cars that barely make 400tq. Your tq is at 489 which is pretty decent. As others have said , cooler temps will produce better numbers.
Don't be overly focused on HP. I've seen plenty of graphs of 500+rwhp H/c cars that barely make 400tq. Your tq is at 489 which is pretty decent. As others have said , cooler temps will produce better numbers.
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
Well, from what I've seen on here, just hook-it-up to a Mustang Dyno and you'll probably hit 600rwhp!
Don't be overly focused on HP. I've seen plenty of graphs of 500+rwhp H/c cars that barely make 400tq. Your tq is at 489 which is pretty decent. As others have said , cooler temps will produce better numbers.
Don't be overly focused on HP. I've seen plenty of graphs of 500+rwhp H/c cars that barely make 400tq. Your tq is at 489 which is pretty decent. As others have said , cooler temps will produce better numbers.
Well Mustang Dyno's will generally show a decent bit lower than a dynojet
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Le Mans Master
Joined: Jul 2005
Posts: 7,405
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From: New Castle Del.
St. Jude Donor '09
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
The cam is only 5* overlap with a smallish intake duration, so that doesn't seem out of line.
TQ is pretty strong which I'd guess in part is caused by a relatively early IVC for a 427 with milled heads. That cam is a really big split for a car with 1 7/8 headers which helps explain why you have such a nice flat HP curve past peak.
If you are unhappy, I'd think a smaller split such as a 230/238 114 would make more power and still have same drivability.
TQ is pretty strong which I'd guess in part is caused by a relatively early IVC for a 427 with milled heads. That cam is a really big split for a car with 1 7/8 headers which helps explain why you have such a nice flat HP curve past peak.
If you are unhappy, I'd think a smaller split such as a 230/238 114 would make more power and still have same drivability.
Le Mans Master
Joined: Jun 2009
Posts: 6,724
Likes: 652
Actually, I think those numbers look GREAT for 110 degree ambient, AND low barometric pressure of 28.86 Hg.
Run it again when you have 50 degree ambient and 30.00 or higher pressure...then you'll see the "big" numbers
Run it again when you have 50 degree ambient and 30.00 or higher pressure...then you'll see the "big" numbers
Le Mans Master
Joined: Dec 2005
Posts: 6,999
Likes: 1,685
From: Southeast TX
The cam is only 5* overlap with a smallish intake duration, so that doesn't seem out of line.
TQ is pretty strong which I'd guess in part is caused by a relatively early IVC for a 427 with milled heads. That cam is a really big split for a car with 1 7/8 headers which helps explain why you have such a nice flat HP curve past peak.
If you are unhappy, I'd think a smaller split such as a 230/238 114 would make more power and still have same drivability.
TQ is pretty strong which I'd guess in part is caused by a relatively early IVC for a 427 with milled heads. That cam is a really big split for a car with 1 7/8 headers which helps explain why you have such a nice flat HP curve past peak.
If you are unhappy, I'd think a smaller split such as a 230/238 114 would make more power and still have same drivability.
. With 427 cubes to play with, you can go quite a bit bigger on the cam and still maintain excellent street manners.
Instructor
Joined: Jul 2011
Posts: 105
Likes: 0
From: NJ
I agree everything seems good especially with the heat and mild cam. The mild cam really helps keep that torque up Congrats and like others said forget the number its just a number!
I am also having the heads milled a bit along with a valve job and a cam being installed currently. Did you have a valve job done? I am wondering if just the valve job part is worth power? This will be a nice comparison with some interesting differences. My car is in NY where it is looking like she is going to be tuned in fall conditions which means really nice cool air, I am not getting a fast intake, I am having the throttle body ported (did you?), I am not sure how much we are milling the heads but I will find out, my cam i was told is like 244/266 with .700 or so lift on both sides so it is quite a bit larger then yours.
The temp difference may skew the comparison but it shall be interesting to see where the power bands line up as well as the torque. I am sure your car is an animal! Go pick on some lambos and turbo porsches then you will forget all about some number!!
Congrats and like others said forget the number its just a number!I am also having the heads milled a bit along with a valve job and a cam being installed currently. Did you have a valve job done? I am wondering if just the valve job part is worth power? This will be a nice comparison with some interesting differences. My car is in NY where it is looking like she is going to be tuned in fall conditions which means really nice cool air, I am not getting a fast intake, I am having the throttle body ported (did you?), I am not sure how much we are milling the heads but I will find out, my cam i was told is like 244/266 with .700 or so lift on both sides so it is quite a bit larger then yours.
The temp difference may skew the comparison but it shall be interesting to see where the power bands line up as well as the torque. I am sure your car is an animal! Go pick on some lambos and turbo porsches then you will forget all about some number!!
Last edited by ODE-Z; Sep 15, 2011 at 06:24 PM.
