just finished a 2002 ss 810 rwhp trick setup
i find the dyno jet dyno to be highly unreliable due to fluctuation ,i have tuned on dyno jet and found that the numbers jump speraticly.with out changing anything at all the numbers will jump or drop.as far as i am conserned the dynapack dyno is the s---.and all dyno numbers mach up with what cars end up running.
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
the pump failure does explain it.
well congrats on the 9.60 run.
i still don't see how your making that kind of power on a 3.4 pulley thru the twin intercoolers unless you have a huge crankpulley and are overspinning the crap out of the blower.
in any case it doesn't matter what I think
keep on doing what your doing cause your managing to make 200rwhp more than every other D1 / 346 ci car I have ever heard about.
and I completly agree with your statement about the dynojet. the dynapak is the way to go.
well congrats on the 9.60 run.
i still don't see how your making that kind of power on a 3.4 pulley thru the twin intercoolers unless you have a huge crankpulley and are overspinning the crap out of the blower.
in any case it doesn't matter what I think
keep on doing what your doing cause your managing to make 200rwhp more than every other D1 / 346 ci car I have ever heard about.
and I completly agree with your statement about the dynojet. the dynapak is the way to go.
Originally Posted by Blackbird
keep on doing what your doing cause your managing to make 200rwhp more than every other D1 / 346 ci car I have ever heard about.
With 810 hp and 3700 race weight my virtual engine calculator gives me a 10.16 @ 132.5 mph. With 900 and 3700 raceweight it is 9.81 @ 137.3 mph. To run a 9.60 the calculator sayes 960 hp with 140.3 mph.
Why not swap to a good fmic. Probably be easier on the motor with less boost. Take some weight out and it will run faster too.
Why not swap to a good fmic. Probably be easier on the motor with less boost. Take some weight out and it will run faster too.
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
Yah but are they 346's running thru the dinky stock intercoolers and with a pulley combo that doesn't even max out the blower? My guess is no.
I have to assume your doing this on race fuel correct? With 200 degree plus IAT's and that high of compression you have to be.
I have been basing my shock in the numbers based on pump gas.
I have to assume your doing this on race fuel correct? With 200 degree plus IAT's and that high of compression you have to be.
I have been basing my shock in the numbers based on pump gas.
Last edited by Blackbird; Jun 21, 2005 at 12:21 AM.
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Verdad Gallardo we are useing 109 octaine so you guys are telling me i must make 960 rwhp to go 9.60 in a 3700 lb car .you guys must not build or drive many cars.because if you make 960 rwhp and youre only going 9.60 you have other problems.
so you are telling me the 100's of other cars i have tuned on this dyno somethings wrong with them because they make exactly what they are suposed to at the tire,but as you say at the crank not the tire.you have bumped youre head or something i can not fighure you guy's out.the point is it makes a real 810 rwhp end of story and more to come.
I dont doubt the dyno said 810 or whatever, using ET to figure out HP is pretty flawed. Thats why PSJ asks for the trap speed. if you are using one of those online ET/HP calculators they dont work.
If I put 3700lbs at 9.60 I get 826rwhp on a ET/HP calculator.
If I put my car, 3500lbs, 10.42 = 612rwhp, I make 515-520 SAE on a dynojet. If I had a better 60' and say I ran a 10.20 that same calculator would show 651rahp which is way out in left field.
If I put my mph in: 130 = 522rwhp. if I had a better 60 the mph wouldnt change.
So if you have a 3700lb car with 810rwhp you should be running 148 in the 1/4 mile,
thats why people use mph for their rwhp estimate calculations and not ET.
If I put 3700lbs at 9.60 I get 826rwhp on a ET/HP calculator.
If I put my car, 3500lbs, 10.42 = 612rwhp, I make 515-520 SAE on a dynojet. If I had a better 60' and say I ran a 10.20 that same calculator would show 651rahp which is way out in left field.
If I put my mph in: 130 = 522rwhp. if I had a better 60 the mph wouldnt change.
So if you have a 3700lb car with 810rwhp you should be running 148 in the 1/4 mile,
thats why people use mph for their rwhp estimate calculations and not ET.
Last edited by kp; Jun 21, 2005 at 02:02 PM.
TECH Addict
Joined: Nov 2001
Posts: 2,659
Likes: 1
From: Bellevue, Wa
well it makes a real 810 rear Axle horse power.
if you added wheels and tires it would read less rear Wheel horse power
he is right though guys the car is making that at the axle, if the car was put on a dynojet it would read around 700 due to the way the dynojet works, loss from wheels tires, etc....
basically add 10-15% to your dynojet numbers and thats what you would read on his dyno.
this is why dyno racing sucks. different dynos will produce different numbers. this is why I probed in the first place. without knowing they are dynapak numbers his claim seemed impossible. now knowing they are it is feasible. people need to post the whole story when they make big number claims. I think people need to know the difference or they think something is wrong or they got screwed when their numbers dont jive with others. knowledge is power.
now that I know it's race gas it is feasible. also if the guy is smart enough to use a dynapak i am guessing he is smart enough to tune the combo to produce the numbers. why the hell they would cram all the boost thru those dinky intercoolers well thats their perrogative but they are proving with enough octane you can do it.
if you added wheels and tires it would read less rear Wheel horse power
he is right though guys the car is making that at the axle, if the car was put on a dynojet it would read around 700 due to the way the dynojet works, loss from wheels tires, etc....
basically add 10-15% to your dynojet numbers and thats what you would read on his dyno.
this is why dyno racing sucks. different dynos will produce different numbers. this is why I probed in the first place. without knowing they are dynapak numbers his claim seemed impossible. now knowing they are it is feasible. people need to post the whole story when they make big number claims. I think people need to know the difference or they think something is wrong or they got screwed when their numbers dont jive with others. knowledge is power.
now that I know it's race gas it is feasible. also if the guy is smart enough to use a dynapak i am guessing he is smart enough to tune the combo to produce the numbers. why the hell they would cram all the boost thru those dinky intercoolers well thats their perrogative but they are proving with enough octane you can do it.
TECH Apprentice
Joined: Aug 2002
Posts: 317
Likes: 0
From: Charlotte NC
^well said
I don't doubt that his car made those numbers but I find it hard to believe. Seeing a 383 LS1 with an F1 making 15 PSI on the stock intercoolers put down 785 last week makes it even harder for me to believe esp with a D1
I don't doubt that his car made those numbers but I find it hard to believe. Seeing a 383 LS1 with an F1 making 15 PSI on the stock intercoolers put down 785 last week makes it even harder for me to believe esp with a D1
it went 6.4@ 115 in the 8th .have not leaned on it for a full pass yet adding dual fuel pumps .when we made that pass it lifted the head right off the line.so i do not know just how fast it will end up running.we guess it will run a bottom 9 sec pass..we have been talking about the so called inacurate numbers of the dyna pack so just to proove it to you that the numbers are accurate when we finish tuneing the car on the dyna pack we are going to go and run it on the dyno jet at another shop and post both dyno sheets with out changing anything from one dyno to the other......
Originally Posted by ROB55
it went 6.4@ 115 in the 8th .have not leaned on it for a full pass yet adding dual fuel pumps .when we made that pass it lifted the head right off the line.so i do not know just how fast it will end up running.we guess it will run a bottom 9 sec pass..we have been talking about the so called inacurate numbers of the dyna pack so just to proove it to you that the numbers are accurate when we finish tuneing the car on the dyna pack we are going to go and run it on the dyno jet at another shop and post both dyno sheets with out changing anything from one dyno to the other......
sounds good.... be sure to keep us posted...... how long ya think till its back up???
