What so you guys think about these numbers PRC 2.5 heads and custom cam? - LS1TECH

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What so you guys think about these numbers PRC 2.5 heads and custom cam?

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Old 01-21-2009, 08:53 PM   #1
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Default What so you guys think about these numbers PRC 2.5 heads and custom cam?

Here are the detail on what the car has.
a4 with a Circle D 4c 3800-4000 converter. Custom ground Predator Z speced cam 230/230 598/612 111+2, Prc stage 2.5 5.3 heads, Unported fast 92/ Jantzer 92mm throttle body, 25% under drive pulley, Pacesetter longtubes, TSP catted y pipe, LM1 catback. I do not have a cut out in the cat back so this is through the full exhaust and catts. The car also has a 85mm TSP lid and 85mm z06 mass air.
The car made 422 rwhp and 396 tq on a dyno jet with the converter locked. It made 401 and 378 unlocked. I think the air/fuel was around 12.3. The numbers look ok for an auto car what do you guys think?
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Old 01-21-2009, 10:25 PM   #2
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Good numbers for that big stall auto. That car will run like hell.
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Old 01-22-2009, 07:59 AM   #3
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I hope so. The shop still has the car because they are woring on a few bugs to get the driveability better.
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Old 01-22-2009, 08:28 AM   #4
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Definitely strong numbers!!!
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Old 01-22-2009, 05:08 PM   #5
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that thing is going to be a blast to drive. get some vids as soon as you can.
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Old 01-22-2009, 05:43 PM   #6
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let us know when you get the tune dialed in...
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H/C/I 9.82 at 134.8MPH 1.281 60ft DA -500ft Race weight 2950lbs on slicks
Link to get Non A/C ram air http://www.speedinc.com/shop-by-vehi...3-ram-air.html
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Old 01-24-2009, 05:59 PM   #7
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The final numbers were 433.36 rwhp and 394.04 rwtq
Here is the dyno sheet
Click the image to open in full size.
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Old 01-24-2009, 09:50 PM   #8
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Not bad at all for full exhaust!!!You would gain annother 20 hp going though a cut out.
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Old 01-24-2009, 10:31 PM   #9
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SAE numbers?
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Old 01-25-2009, 12:19 AM   #10
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awesome numbers through an auto! Get it to a track, i bet it runs some nice times.
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Old 01-25-2009, 12:37 AM   #11
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Quote:
Originally Posted by VIPERBLUELX View Post
SAE numbers?
are you talking about numbers before the heads cam and intake? The car made 320 rwhp before the heads cam and intake. So it basicly gained 114 rwhp from the heads cam and fast 92/92. I think there might be a little more in it because I don'tthink the yhave the tune completely dialed in on it. I am seriously thinking about getting rid of the cats and adding a cut out to see what it gains.

Who has the best off the shelf off road y pipe for pacesetters?
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Old 01-25-2009, 12:34 PM   #12
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lookin good that is a huge gain for H/C/I

114hp is sweet i would be happy as hell...
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Old 01-26-2009, 05:08 AM   #13
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How does the air fuel look on this graph?
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Old 01-26-2009, 05:17 AM   #14
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Nice Numbers!!! I am going with a setup very similar to this hope to see around the same numbers!!!!
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Old 01-26-2009, 05:55 AM   #15
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Quote:
Originally Posted by bigfatls6 View Post
are you talking about numbers before the heads cam and intake? The car made 320 rwhp before the heads cam and intake. So it basicly gained 114 rwhp from the heads cam and fast 92/92. I think there might be a little more in it because I don'tthink the yhave the tune completely dialed in on it. I am seriously thinking about getting rid of the cats and adding a cut out to see what it gains.

Who has the best off the shelf off road y pipe for pacesetters?
He was asking for the SAE correction factor instead of the STD which normally shows a higher number on the dyno

Regardless I'd be happy with anything over 400rwhp in a stalled auto
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Old 01-26-2009, 08:13 AM   #16
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I am pretty sure thats already corrected. My old stalled heads and cam cars made 396 to the wheels and would run 11.30-11.40s on street tires when the track was preped good with a high 1.7 60 ft and this car definetly feels a little stronger. Both cars have pretty much the same converter also.
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Old 01-26-2009, 08:15 AM   #17
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Quote:
Originally Posted by bigfatls6 View Post
I am pretty sure thats already corrected.
Your graph displays STD which shows slightly higher numbers. Sometimes its only 3-5rwhp but sometimes it can be a 10-15rwhp difference.
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Old 01-26-2009, 08:37 AM   #18
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Quote:
Originally Posted by blu1 View Post
Your graph displays STD which shows slightly higher numbers. Sometimes its only 3-5rwhp but sometimes it can be a 10-15rwhp difference.
So what is changed to get the sae or standard and whats the difference?
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Old 01-26-2009, 08:49 AM   #19
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Quote:
Originally Posted by bigfatls6 View Post
So what is changed to get the sae or standard and whats the difference?
The dyno operator can do this or if you have the runviewer files you can do it yourself with dynojet runviewer. The difference all lyes on how good the weather is on that certain day. If you look at the bottom you will see that STD corrected your numbers down 0.99 and Im betting SAE would have been 0.97 which would make them lower. On a hot and humid day the numbers would correct up from the actual number which is why the industry standard is SAE which makes numbers on par from a 20 degree day to a 100 degree day.

Basically on this day your car is making more than the dyno is showing you.
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Old 01-26-2009, 09:28 AM   #20
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the temp shown was probably correct. The humidity was probably higher. what all factors go into this determination?
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Old 01-26-2009, 09:28 AM
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