I was wondering if anyone had there chassis dyno hp numbers and 1/4 mile time slips , so we can compare the 1/4 mile times ? See what rwhp equals with different combos in the 1/4 mile.

Trap speed is a better comparison. E.T. is dependent on gearing, so it won't correlate well with RWHP.

MPH is the best indication of HP. You can spin off the line and get a poor ET but still run relatively the same MPH as if you hooked up right off the line.

If set up properly, a car can ET and MPH very close to the same HP level. My last race last fall, my ET calculated 723.00 corrected HP and the MPH calculated 735.78 corrected HP. Uncorrected it was 637.31 and 648.57.

I do all my tuning based on MPH.

Don't forget HP and ET mean nothing unless you're comparing apples to apples. Yank the engine out of my car and drop it into a 1500 pound altered and it will run low 8's. Same HP, different ET. Third gens with a weight range of over 500 pounds will give very different results with the same HP.

I agree but at least this gives us something to go buy for the average street car not a typical drag car, most street cars meaning third gens are typically compairably. I am willing to bet the in a group of 10 street racing third gens there will not be that much disparity for the same rwhp #s. That is what numbers I am looking for. Something to really compare data with. An average sort of median number. It should be interesting if people post up!
Like 300rwhp third gen= roughly say 12.9s this is an example of what I mean.

What we're saying though is you can't make that comparison. Two cars with 300 RWHP, one with 2.73 gears and one with 4.11 gears will have very different ET. Both will trap at about the same speed though.

Thats exactly what I am saying, I am not trying to re-invent the wheel !
Lets see the disparity between RWHP and 1/4 times produced for that one vehicle. If anyone has both pieces of data it would be intersting to compare there RWHP to there time slips. Not just car to car but car to rwhp. I know there is a million differnet combo's but it would be interesting to see what people are actually doing with there RWHP number.

254whp 315wtq. Ran best of 12.957 at 103.8 mph on a 1.71 60 foot, at near sea-level like weather/DA. Raceweight of about 3450 lbs or so. warmer 60-70 degree days it goes 13.2-13.3's at 100-101

Thats what I am talking about if everybody states there numbers we can see there rwhp = 1/4 times.
Nice times orr89rocz !

superflo chassie dyno 623 rwhp
race weight 3665
10..23 @ 134 1.51 60 foot
DA 6100'

320 rwhp 360 rwtq
12.8 @106
stock gears , gm torque converter , plain radials

12.3 at 109 in a 3250lb(including half tank of gas plus my 160lb), most of the HP calculators out there(based on MPH) put my car at 330rwhp with that weight.

Nice times 327 thats with slicks ?

Previous owner (friend before i got my iroc)

Dyno'd 311WHP 312 WTQ
3250lbs without driver (driver 150lbs)

Bald M/T DR's
3.42 10 bolt

1.82 60foot
12.93@107mph

I was told by a few friends he wasnt too hard on the car either.

Next year should be fun with my new tune, 12 Bolt and new M/Ts

Oh and the the bottle

Jay

delete

330rwhp 340rwtq 12.89@ 107 with 1.97 60 foot with et streets....i need more converter ALOT more

Hay does anyone know why Fastls1 put delete in his reply ?
Or what that means?

335 rwhp, 406 tq - 12.00 @112
482 rwhp, 519 tw - 10.76@127

What would you guess-timate the car weighs w/ driver BJ?

And I guess I'll post my LS1 #'s for the hell of it...

329 RWHP/341RWTQ - 12.242 @ 111.52 MPH - 1.746 60'
445 RWHP/536RWTQ - 11.504 @ 122.43 MPH - 1.852 60'
(Both #'s with old set up)

i take it thats a nitrous shot of some type? 150-175 shot perhaps?

Hey 88gta any idea of the weight of 12.00 pass with gta

Car weighs 3690 with me in it according to the gainesville scales. The 482 rwhp was a 175 shot.

Stock 16" wheels, 15lb bottle in the trunk(even on n/a runs), tools in the back seat, laptop, etc. I used to trust people in the pits leaving my tools and wheels there, but not anymore, and I know the nitrous bottle would 'walk away'.

Next time I go to the track will be with the draglights on.

Nice thanks for the reply.

Whoops, missed that reply...

It was on 235/70(?)-R15 MT ET Street radials, the 60' was 1.71 and the 1/8 was 7.8 at 87.

My race weight is 3760. Best et so far is 12.55 and best mph is 110.96. I have 350rwhp and 365rwtq when those passes were made.

I thought with the new motor it was much closer to 400rwhp?

made just shy of 500rwhp running 125-126mph 10.8-11.2 et (depending on traction) on motor 333rwhp and 107-108 mph.

"I thought with the new motor it was much closer to 400rwhp?"

Nope, the dyno barometric pressure was off. So the above numbers are pretty much correct. I have made 355rwhp and 377rwtq but will settle for the above numbers. Installing new valve springs and a new cam and we will see what happens with the next dyno runs.

Between 3200 and 3300 lbs...

Old Power: 272/316
-12.63 @ 107 on ET Streets. Best 60' (1.72)
-12.99 @ 108 on 17" street radials. Best 60' (2.06)

Old Power: 265/308
-12.56 @ 106 on slicks. Best 60' (1.69)
-xx.xx @ xxx on radials. Best 60' (x.xx)

New power: 256/295
-12.7x @ 106 on slicks. Best 60' (1.74)
-12.95 @ 106 on 18" street radials. Best 60' (1.91)

That sucks, I remember seeing your post about it and thinking "that's a HUGE amount of power for that setup, he must be doing something right though!".

Good luck with the new cam! Still and XFI grind?

Custom cam and heavier valve springs. The XFI is a great cam and did a good job. However for my goal I decided to go with a custom cam this time around.

That was a geat idea Sea, i see what you was thinking, from the post it looks like the adv. street car with stock weight and get around 330 to 360 RWHP you got yourself a mid 12's car

195rwhp - 93mph (my car)
323rwhp - 109mph (friends bone stock 2002 WS6 6 speed)
360rwhp - 119mph (my brothers 96 T/A with H/C/Stall LS1)

Wow guys really turned to be pretty informative for a typical third gen in street trim. Thank You very much everybody for contributing.

keep 'em coming. I love numbers.

well i know my buddy's L98 supposively put down near 250whp and he ran 13.6-13.7's in the summer heat at 99-101mph, 3.73 gears and stock converter, street tires. very similar to my car powerwise/mph wise

you mean his car is freak too what mods does he have your car always gives me hope for 12's with bolt ons my buddies stock slp ls1 auto wont pass me till he hits 3rd so i guess im doing ok

he had TPIS base, SLP runners portmatched, a TB not sure what size, and i think 1.6 rockers. Injectors and a custom tune. Shorty headers/catback with no cat. 3.73 gears, stock trans with stock converter. On street tires, low 1.9 60 foots. alittle bit of suspension work.

he told me about 250whp so i think it was actually high 240's. His car ran good too. It was light tho, being a lower option 89 formula L98. i dont remember but i think its a hardtop as well. with converter and sticky tires in the winter, i think his car would have gone 12's as well or darn close to it. I was running 13.88-13.9s on mid high 1.9 60 foots when i raced him. he was doing 13.67 to 13.70's. beat me by a car and a half each time. Both on street tires and my car was stock TPI then. I think 3.27 gears too. I believe my HSR would run the same times as him if i were on street tires but i never ran it on street tires

Hey guys does anyone think this is worth a sticky, because of the helpful info for onsite of what you car will run in the quarter mile with an average RWHP.
Thanks .

1991 L98 stock + SLP chip with a race weight of 3675 with me and gas in.

191 hp 263 ft-lb

2.107 60'
1/8 mile - 9.462 @ 74.84 mph
1/4 mile - 14.84 @ 91.07 mph

Above numbers are uncorrected and done in Calgary AB at an elevation 3200+ feet.

Found this one from a members sig here

1988 Formula 5.7L/6sp 3.91 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, Superram, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT, E-Tec 200 heads, SDPC Vortec manifold, ZZ-409 cam.
Best ET 12.17
Best 60 FT 1.754
Best MPH 111.87
RWHP 346 = approx 407 flywheel
RWTQ 382 = approx 460 flywheel