How much RWHP to break into the 9's?
07-24-2006, 10:30 AM
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How much RWHP to break into the 9's? I am going to be hitting the track next weekend for the 1st time with my new 427CI LS2 with ETP LS7 top end... My race weight is ~3350lbs and the car has a built 700R4 with 4.10's and a 28x10 Hoosier slick... I expect the car to sixty foot in the mid 1.4 range... I have a 3 disk converter that is setup for spray, so it's a little tight on the motor (~4500RPM)... I suspect this will hurt my sixties a little...
So the question is, how much RWHP would be needed to dip into the 9's with my setup?
I'll post timeslips and dyno chart after I get back from the track next weekend...
So the question is, how much RWHP would be needed to dip into the 9's with my setup?
I'll post timeslips and dyno chart after I get back from the track next weekend...
07-24-2006, 12:32 PM
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I am shooting for 9.9 @ 135 with a 1.45 sixty... does that sound right?
What RPM would I go through the traps at with the converter locked... how much would the tires grow at that speed... I run them with tubes on a 10" wide rim if that matters...
What RPM would I go through the traps at with the converter locked... how much would the tires grow at that speed... I run them with tubes on a 10" wide rim if that matters...
07-26-2006, 04:09 PM
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Originally Posted by Uthinkso
I think you'd have to have closer to 600rwhp assuming a car that weighs 35-3600lb.
570rwhp will get you in the 9.9x range with an auto tranny
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07-26-2006, 07:55 PM
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Originally Posted by The Juggernaut
@3350, 4500 stall, I'd say 550ish rwhp, MPH around 136 for a 9.95-9.99.
DA about 2000ft
DA about 2000ft
DA will not be on my side... 2500-3000ft is what it's looking like... but we see -1000ft in the cool fall air up here... so I'll be happy to see 10.3's this weekend... but plan to see 9's before the end of the season...
I have a TNT ring on the car that I plan on trying once I get comfortable in the car...
07-26-2006, 08:40 PM
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Originally Posted by Uthinkso
What are some details on the powerplant in the car?
https://ls1tech.com/forums/generation-iv-internal-engine/547405-my-427-ls7-firebird-complete-video.html
07-26-2006, 10:57 PM
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Originally Posted by The Juggernaut
@3350, 4500 stall, I'd say 550ish rwhp, MPH around 136 for a 9.95-9.99.
DA about 2000ft
DA about 2000ft
07-27-2006, 10:52 AM
#13
Originally Posted by ty_ty13
if you dynoed right at 550rwhp with slicks on you got 9's in the bag with a good working chassis and suspension...
Thats a very broad generalization there. ****, I know of more cars making 550 or more at the wheels running 10's than running 9's. Weight, DA, short time, and how the power comes on plays an important role. Look at all the dyno queen cars making 600, 700, 800 hp and not in the 9's. It takes more than just power to make it happen, trust me, my car will make much more than 550 rwhp and won't run 9's. Weight and weight distribution is why.
07-27-2006, 10:55 AM
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Originally Posted by TS6
Thats a very broad generalization there. ****, I know of more cars making 550 or more at the wheels running 10's than running 9's. Weight, DA, short time, and how the power comes on plays an important role. Look at all the dyno queen cars making 600, 700, 800 hp and not in the 9's. It takes more than just power to make it happen, trust me, my car will make much more than 550 rwhp and won't run 9's. Weight and weight distribution is why.
07-27-2006, 01:22 PM
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Originally Posted by TS6
Thats a very broad generalization there. ****, I know of more cars making 550 or more at the wheels running 10's than running 9's. Weight, DA, short time, and how the power comes on plays an important role. Look at all the dyno queen cars making 600, 700, 800 hp and not in the 9's. It takes more than just power to make it happen, trust me, my car will make much more than 550 rwhp and won't run 9's. Weight and weight distribution is why.
thats why i metioned a good working chassis and suspension.... most of the cars you know of making that power are street cars that cant hit 9's.... full interior, radio, speakers, sound deadening and so on...
and yes he menttioned his weight already... i still stand by my judgement..
07-27-2006, 05:24 PM
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my supra weighed 3700lbs and ran 10.18@132 with 580 rwhp... thats was through a th400... the car cosistently 60 ft'd 1.42 on m&h drag radials(275/60/15) I would foot/ e- brake the car up to about 3600 rpm and leave with 12 psi of boost...
so I would say if you hp is in that range weighing 400lbs less then my car you should dip in the 9's pretty easy if all is working properly on your car..
jay
so I would say if you hp is in that range weighing 400lbs less then my car you should dip in the 9's pretty easy if all is working properly on your car..
jay