why so low? help
why so low? help I have an 03 z06 that has lg long tubes 3'' x pipe with no cats , 3:90 gears,ausie clutch, 4" custom air intake,10.9 to one compression all forged,85 mm throttle body, 42lbs injectors, 224 224 cam with 581 lift but with 1.7 roller rockers, heads from precision porting that flow over 300cfm, it made only 390hp and 361tq to the wheels on a dynojet wtf?
Originally Posted by SAM98WS6
bad head job (not as advertised)
tuning? A/F?
Dyno? SAE? Before numbers?
Valvetrain?
tuning? A/F?
Dyno? SAE? Before numbers?
Valvetrain?
Originally Posted by BlueSix
Do you have a graph to post up?
Originally Posted by SideStep
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The injectors arent going to make a difference unless they havent been tuned into the car,then youre going mega rich and risk washing down the cylinders if there is too much fuel.Anyways,it sounds like the car isnt tuned but it is on a mustang dyno which is,despite huge debate,GENERALLY going to read lower than a dynojet so youre prolli about 410 or so on a Dynojet,but you also have gears which take some power as well.Your cam isnt that big so i think with some tuning and on a dynojet itll get better,besides numbers arent what matters its how it runs down the 1320 that does,or a ride on the highway.Good luck
Originally Posted by ddnspider
The injectors arent going to make a difference unless they havent been tuned into the car,then youre going mega rich and risk washing down the cylinders if there is too much fuel.Anyways,it sounds like the car isnt tuned but it is on a mustang dyno which is,despite huge debate,GENERALLY going to read lower than a dynojet so youre prolli about 410 or so on a Dynojet,but you also have gears which take some power as well.Your cam isnt that big so i think with some tuning and on a dynojet itll get better,besides numbers arent what matters its how it runs down the 1320 that does,or a ride on the highway.Good luck
Dont even try opening up that can of worms....SO MANY threads have been about that.Some people see no difference at all and i believe 1 or 2 people saw 40rwhp difference.So youll just have to redyno.
Originally Posted by ddnspider
Dont even try opening up that can of worms....SO MANY threads have been about that.Some people see no difference at all and i believe 1 or 2 people saw 40rwhp difference.So youll just have to redyno.
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Joined: Feb 2005
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Originally Posted by 97F1R408
I dont no whats so funny side step this car still has direct port which took it to 587rwhp,so your 450 doesnt add up to much and my 97 has a 408 with an f1r methanol injection and everything else starting it up would shut your car off
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Joined: Jan 2002
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From: harrisburg, pa
Mustang dynos are about 10% lower than dynojets from the 2 times ive compared.
we need to see the graph. my buddies 02 Z06 made 365rwhp with just LG long tubes and air intake. You should make more. Did you dyno before and after on the same dyno?
we need to see the graph. my buddies 02 Z06 made 365rwhp with just LG long tubes and air intake. You should make more. Did you dyno before and after on the same dyno?
Originally Posted by SAM98WS6
Mustang dynos are about 10% lower than dynojets from the 2 times ive compared.
we need to see the graph. my buddies 02 Z06 made 365rwhp with just LG long tubes and air intake. You should make more. Did you dyno before and after on the same dyno?
we need to see the graph. my buddies 02 Z06 made 365rwhp with just LG long tubes and air intake. You should make more. Did you dyno before and after on the same dyno?
TECH Addict
Joined: Jun 2005
Posts: 2,660
Likes: 14
From: England
Originally Posted by 97F1R408
IT is still at the tuners but it was my mistake it was done on a mustang dyno but how big of a difference is there ? Ill see if they can fax me one.
)So that would be 410rwhp+ Dynojet ponies.
Also was it STD or SAE? As this can make a 5-12bhp difference quite easy.
If the 414rwhp from the previous 6.0 incarnation was STD on a Dynojet then it would be more like 385-390rwhp SAE on a Mustang Dyno. And if the auto was locked for the dyno run it would have been quite efficent also in terms of drivetrain loss, not far off a manual.
Last edited by 300bhp/ton; Jan 6, 2006 at 10:43 AM.
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You're losing 10 hp from the gears and reading ~20 hp lower on the Mustang dyno. So that, in theory would put you at ~420 hp on a dynojet with stock gears. The ~420 hp sounds about right with your budget heads and the size cam that you have. With AFR's or ETP's I think you would be 10-20 hp higher. JMO.