why do we worry so much about dyno numbers
Originally Posted by BBQLS1
Yeah, but the ultimate goal is ET. Looking at dyno sheets won't necessarily show how well it will work in your car. I'm not saying that the dyno isn't a useful tool. But I kind of think BLUEBALLS is saying people show their dyno sheets like its a timeslip.
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
Originally Posted by PHANTA-Z
Real world example for you guys from this past weekend at the track...
THe cars: mine (see sig)
boss man's (1995 Saleen S351, heavily modded 575 rwhp)
The et's/traps: Mine (see sig)
boss man's 8.8 @ 92 mph.
Both on street tires.
Moral of the story.....just cause the dyno says X don't mean the car will do Y. Im with you guys, use the dyno to tune and get a good idea of what the car is doing, take it to the track to see if it acutally works.
THe cars: mine (see sig)
boss man's (1995 Saleen S351, heavily modded 575 rwhp)
The et's/traps: Mine (see sig)
boss man's 8.8 @ 92 mph.
Both on street tires.
Moral of the story.....just cause the dyno says X don't mean the car will do Y. Im with you guys, use the dyno to tune and get a good idea of what the car is doing, take it to the track to see if it acutally works.
But it is nice to get a cool dyno number. Maybe one of these days I'll actually do it.
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From: Grand Rapids, MI
Originally Posted by jrp
who's ultimate goal is an E.T? its surely not mine as i could really give a **** about drag racing. everyone has there own asperations and goals for a given setup. i personally like seeing dyno numbers to see what can be had out of a given package and how attention to detail and specifications can lead to a 40rwhp difference on the same combo in a different car.
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
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From: Kent WA
Originally Posted by P Mack
The answer to this question is so obvious. You can compare engine combos independently of weight, suspension, traction, track setup, etc.
Fact is, a dyno won't tell you what car is faster... no matter what the numbers say. Same as a time slip won't tell you how much HP you're putting down, no matter what the ET/MPH says. It just is a matter of what you care about most...
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From: Red Stick, LA
Originally Posted by jrp
who's ultimate goal is an E.T? its surely not mine as i could really give a **** about drag racing. everyone has there own asperations and goals for a given setup. i personally like seeing dyno numbers to see what can be had out of a given package and how attention to detail and specifications can lead to a 40rwhp difference on the same combo in a different car.
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
Originally Posted by jrp
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
I guess there are different goals for different people.
Originally Posted by aram
Isn't that what drag racing a 4th gen LS1 is all about?
I guess there are different goals for different people.
I guess there are different goals for different people.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
Originally Posted by Tranzor_Z28
Fact is, a dyno won't tell you what car is faster... no matter what the numbers say. Same as a time slip won't tell you how much HP you're putting down, no matter what the ET/MPH says. It just is a matter of what you care about most...
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From: Stuart Fl
Originally Posted by jrp
who's ultimate goal is an E.T? its surely not mine as i could really give a **** about drag racing. everyone has there own asperations and goals for a given setup. i personally like seeing dyno numbers to see what can be had out of a given package and how attention to detail and specifications can lead to a 40rwhp difference on the same combo in a different car.
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
fast E.T's are nice but anybody can gut the **** out of there car, run a 4k+ stall, big sticky tires, some basic bolt on's and suspension work and cut a 11 second E.T quite readily. that doesnt really impress me
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From: sojourning....looking for my city whose builder and maker is God.
Originally Posted by jrp
if your into drag racing, again, im not.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
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From: Kent WA
Originally Posted by Lostpatrolman
Umm... WRONG! Your trap speed will indicate your hp if you know your race weight.
Not always... there's still track prep/condition/grade, density altitude, air temp, etc. to account for, and those things can effect MPH.
Hell, having too much tire can lower your mph... doesn't indicate at all what hp you'd put down on a dyno.
My point was, there is still too many variables to account for to say certain dyno numbers = ET/MPH, or ET/MPH = certain dyno numbers.
Originally Posted by john shea
I agree I think dyno numbers are meaningless
unless your set up for the track. Last week
I saw a new 400hp gto run 13.6 and a late
model vette run 13.7. I believe how you are
set up is more important than horsepower.
unless your set up for the track. Last week
I saw a new 400hp gto run 13.6 and a late
model vette run 13.7. I believe how you are
set up is more important than horsepower.
did you go down to gateway? was it a c5 vette? the new gto (350hp ones) have good top end but i think they might be a little slow out of the hole....(i raced one on the highway )
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From: Red Stick, LA
Originally Posted by jrp
if your into drag racing, again, im not.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
Originally Posted by Tranzor_Z28
Not always... there's still track prep/condition/grade, density altitude, air temp, etc. to account for, and those things can effect MPH.
Hell, having too much tire can lower your mph... doesn't indicate at all what hp you'd put down on a dyno.
My point was, there is still too many variables to account for to say certain dyno numbers = ET/MPH, or ET/MPH = certain dyno numbers.
Hell, having too much tire can lower your mph... doesn't indicate at all what hp you'd put down on a dyno.
My point was, there is still too many variables to account for to say certain dyno numbers = ET/MPH, or ET/MPH = certain dyno numbers.
Originally Posted by Bill00Formula
Hey Dave,
Have you dynoed since the addition of the fast intake? I doubt that you have 404 or 407 at any dyno now. I don't really understand how you could keep pace with a 422 though.
Have you dynoed since the addition of the fast intake? I doubt that you have 404 or 407 at any dyno now. I don't really understand how you could keep pace with a 422 though.
i give up on the dyno. i went 119 with 400hp. 120's with 407hp and the 236/243 cam. then with the t-rex i went 121 most the time with 403 hp. yes lost hp somewhere. and the 90/90 i am close to 123 with less DA. with the DA for the 123 it was +988 with the 121 it was in the -400's. so i prob gained 5hp 
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From: Jones, OK
Originally Posted by Grimes
I have to agree with this. Those 1/4 mile calculators are best for average cars with average traction. Once you have a really light or really heavy car, or a car that hooks like crazy b/c of suspension mods, it can throw things off.
yes i have seen dyno numbers increase by changing the correction factor.
have seen some shops lower it when car first comes n. then after they put performance parts on it. they jack correction up so it makes it seem like it has gained a **** load of hp when it didnt gain nearly that much.
Originally Posted by jrp
if your into drag racing, again, im not.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
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From: Kent WA
Originally Posted by jrp
i have more respect for the guy that builds up a 11 second car but makes little to no compromises; full weight, nice stereo, pump gas, a/c and power steering retained, and can still drive to the grocery store and get decent gas mileage, ect.
I could go a lot faster if I gutted my car and all that... but I want to get as fast a timeslip as I can and still stay on stock heads, full weight, naturally aspirated. 
i just like to know that i have high numbers. i dont care about track times or anything like that unless i go to the track which is maybe once every couple years. i would rather just know i have 500hp even tho im only gunna use it on small occasions.....
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From: Sterling Heights, MI
Originally Posted by aram
Isn't that what drag racing a 4th gen LS1 is all about?
I guess there are different goals for different people.
I guess there are different goals for different people.
I do agree that first, and foremost, the dyno is a tuning tool. It allows you to maximize what you have and to test the results. But on a track car, the E.T. or lap time is all that matters. Total power is just part of the equation.
In my case, stuffing modern technology into a 40 year old street machine built to be driven on the street without the use of a cage or 5 point harness limits the ability to ability to let it all hang out at the strip or a Solo 1. It is essentially a toy. In these cases, the only numbers that we can hang are hat on is the dyno numbers. When I'm done with the car, and if I get my 500-550 wrhp then I have won my race.