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Old 04-14-2012, 02:49 PM   #1
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Dyno results :-(

Got 221 horse, 270 ft pounds, out of my 95 cobra with O/R h pipe, flowmasters, CNL cold air not what I was expecting and it ran very lean so I have to get an adjustable fuel pressure reg and tune
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Old 04-14-2012, 02:59 PM   #2
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Dam then i bet my poor 94 GT is even less as i have same mods as u except the gt40 heads and intake. Untill i force some air in its lungs lol. But that dose seem low for a cobra??
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Old 04-14-2012, 03:06 PM   #3
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That's power to the wheels not at the flywheel so it actually sounds about right. The torque on those motors where always decent by way under powered in the HP category. Now a days, you have to add FI to compete with any newer car. It's a shame that four door Acura & Nissan make that power in sedan ;(. Sad very sad
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Old 04-14-2012, 03:08 PM   #4
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Originally Posted by SNK3BTE04
That's power to the wheels not at the flywheel so it actually sounds about right. The torque on those motors where always decent by way under powered in the HP category. Now a days, you have to add FI to compete with any newer car. It's a shame that four door Acura & Nissan make that power in sedan ;(. Sad very sad
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Old 04-14-2012, 03:17 PM   #5
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Quote:
Originally Posted by jwhayne0001
Got 221 horse, 270 ft pounds, out of my 95 cobra with O/R h pipe, flowmasters, CNL cold air not what I was expecting and it ran very lean so I have to get an adjustable fuel pressure reg and tune
Next time ya got her on the dyno have em Diablochip her and give her a tune and you'll be happier. Cost me about $500 bucks but well worth it
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Old 04-14-2012, 03:26 PM   #6
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From everything I've read SCT is the preferred chip, but if it's being dyno tuned I guess it wont make a lot of difference.
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Old 04-14-2012, 03:36 PM   #7
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From everything I've read SCT is the preferred chip, but if it's being dyno tuned I guess it wont make a lot of difference.
SCT is fine but I thought that was a pre-programmed chip. The shop I go to uses Diablo programmers and chips
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Old 04-14-2012, 03:51 PM   #8
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SCT is fine but I thought that was a pre-programmed chip. The shop I go to uses Diablo programmers and chips
They are pre-programmed. I just ordered a SCT 4 Bank eliminator chip so hopefully I didn't screw up when I should've went handheld all good reviews though on the SCT brand and also diablo so it's really personal preference really.
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Old 04-14-2012, 03:52 PM   #9
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Local speed shop uses SCT and he writes his own tunes
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Old 04-14-2012, 06:44 PM   #10
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The 95 svt was only rated 240hp at the crank from the factory, so those are actually really good numbers.

Those pushrod motors respond pretty well to big heafty cams. Might want to look into that...

You got yourself a collectors car there man, very nice!
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Old 04-14-2012, 06:49 PM   #11
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depending on your trans thats rought 20 hp gain
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Old 04-14-2012, 07:16 PM   #12
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Guess I just had high expectations for it lol thanks for the support though, makes me feel a little better
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Old 04-14-2012, 07:45 PM   #13
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Re: Dyno results :-(

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Originally Posted by jwhayne0001 View Post
Guess I just had high expectations for it lol thanks for the support though, makes me feel a little better
There is around an 18% loss for cars with automatic transmissions that have lockup torque converters.


221 x 18% = 39.78 +221 = 260.78 FWHP
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Old 04-14-2012, 08:03 PM   #14
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Quote:
Originally Posted by Trojan Horse

There is around an 18% loss for cars with automatic transmissions that have lockup torque converters.

221 x 18% = 39.78 +221 = 260.78 FWHP
I'm not following this math at all..
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Old 04-14-2012, 08:10 PM   #15
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Re: Dyno results :-(

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I'm not following this math at all..
Why not it is simple?
You take the power produced at the rear tires, multiply it by the 18% loss or .18 to find out how much power was lost, then you add that power back onto the RWHP to get an approximation of the FWHP.
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Old 04-14-2012, 08:21 PM   #16
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Why not it is simple?
You take the power produced at the rear tires, multiply it by the 18% loss or .18 to find out how much power was lost, then you add that power back onto the RWHP to get an approximation of the FWHP.
What % for a standard trans?..
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Old 04-14-2012, 08:43 PM   #17
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Re: Dyno results :-(

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What % for a standard trans?..
For standards 15-16% and a regular non-lock up converter automatic is around 20%
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Old 04-14-2012, 08:46 PM   #18
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For standards 15-16% and a regular non-lock up converter automatic is around 20%
I believe these percentages are a nhra standard.
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Old 04-14-2012, 08:50 PM   #19
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Re: Dyno results :-(

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I believe these percentages are a nhra standard.
Yep, and they will get you "ballpark" estimates not exact.
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Old 04-14-2012, 08:53 PM   #20
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So then roughly my car puts 189hp to the ground...
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Old 04-14-2012, 09:05 PM   #21
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So mines stick shift so it's around 15% loss


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Old 04-14-2012, 09:44 PM   #22
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So mines stick shift so it's around 15% loss
Just curious ive never had a car dyno'd what gear do they run for the test?..
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Old 04-14-2012, 09:46 PM   #23
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Just curious ive never had a car dyno'd what gear do they run for the test?..
Most YouTube videos I see they do 4th.but I have never had one either.so I am a little curious to.
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Old 04-14-2012, 09:47 PM   #24
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Quote:
Originally Posted by XXSTEVEO66

Just curious ive never had a car dyno'd what gear do they run for the test?..
I'm pretty sure 3rd to 4th most of the time
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Old 04-14-2012, 09:50 PM   #25
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Re: Dyno results :-(

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Originally Posted by jwhayne0001 View Post
So mines stick shift so it's around 15% loss
Sorry, I thought yours was auto.


221 x 15% = 33.15 +221 = 254.15 FWHP
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Old 04-14-2012, 09:51 PM   #26
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Re: Dyno results :-(

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Just curious ive never had a car dyno'd what gear do they run for the test?..
Usually 4th gear or whatever gear provides a 1-1 ratio I believe.
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Old 04-14-2012, 10:01 PM   #27
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Usually 4th gear or whatever gear provides a 1-1 ratio I believe.
Ok..that makes sense..unless its an auto?..an auto would always drop to a passing gear so do they start they test at a certain mph to attain 4th?...

---------- Post added at 10:01 PM ---------- Previous post was at 09:56 PM ----------

I feel like I just,answered my own question
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Old 04-14-2012, 10:21 PM   #28
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Re: Dyno results :-(

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Originally Posted by XXSTEVEO66 View Post
Ok..that makes sense..unless its an auto?..an auto would always drop to a passing gear so do they start they test at a certain mph to attain 4th?...

---------- Post added at 10:01 PM ---------- Previous post was at 09:56 PM ----------

I feel like I just,answered my own question
Not real sure about the autos, but I would assume they place the AOD's in the last gear before OD and maybe the dyno does not exert enough drag to pull them down enough to shift into a lower gear.


I'm sure their Dyno computers have settings to accommodate the auto trans however they do it.
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Old 04-14-2012, 10:28 PM   #29
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this also makes ne wonder a little bit about the aem dyno shaft.does it records data all the time right?
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Old 04-15-2012, 02:52 AM   #30
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Re: Dyno results :-(

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this also makes ne wonder a little bit about the aem dyno shaft.does it records data all the time right?
I assume so. It's been too long since I last looked at it to be sure.
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Old 04-16-2012, 02:44 PM   #31
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The only difference that I know of between our cars is I have long tube headers, TB, and adjustable fuel regulator. Why does mine pull 264hp and 366tq?
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Old 04-16-2012, 03:37 PM   #32
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The only difference that I know of between our cars is I have long tube headers, TB, and adjustable fuel regulator. Why does mine pull 264hp and 366tq?
Were they done on the same dyno? I ask because synod do vary.also the longtubes should be good for a little and the th helps. But that does seem to be more than I would expect.
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Old 04-16-2012, 04:15 PM   #33
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Were they done on the same dyno? I ask because synod do vary.also the longtubes should be good for a little and the th helps. But that does seem to be more than I would expect.
Same exact Dyno
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Old 04-17-2012, 06:50 AM   #34
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The only difference that I know of between our cars is I have long tube headers, TB, and adjustable fuel regulator. Why does mine pull 264hp and 366tq?
And a tune which still wouldn't make up 100 ft pounds hope someone can shed some light on this lol
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Old 04-17-2012, 10:37 AM   #35
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And a tune which still wouldn't make up 100 ft pounds hope someone can shed some light on this lol
I forgot I had a SCT chip with custom tune.
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