just got my first timeslip last night

[MikeE24]

Last night was my first time at the track. I had 4 runs and my best time was 8.986 at 81.27 in the 8th. Does anyone here know what that may add up to in the quarter? My car is an auto w/ 3.23 gears, whisper lid and borla catback as the only mods.

[N20LT4Bird]

Does anyone here know what that may add up to in the quarter? My car is an auto w/ 3.23 gears, whisper lid and borla catback as the only mods.

High 12's to low 13's.

[scotts94_z28]

according to the bottom of the page of this site http://www.ondoperformance.com/calculators.html high 13's to low 14's

[MikeE24]

thanks for the link scotts. that's exactly the info I was searching for.

[fastTa]

There are no super accurate ways to convert an 1/8 mile time to a 1/4 mile time. Way, way too many variables to simplify such a conversion. There are however a few different multipliers used by various schools of thought to ROUGHLY estimate what your 1/4 mile time might be.

NHRA sprtsman drivers would use 1.55978 , some Outlaw drivers I know use 1.54017, while even some "NHRA approved" store bought calculators sold here in local speed shops I have seen, will use a 1.5832 multiplier. These are basically just a fun way to roughly estimate what you run in the quarter. Due to the possibilty of variance in excess of 0.5 sec, these are by no means a rule of thumb calculation. Nobody has ever been handed a trophy for a 1/4 mile run based on a simple calculation from their 1/8 mile ET. These were origianlly used for throttle stop calculations in the old school.

So to roughly estimate, you would probably be good for a 13.85-14.00 sec ET in the 1/4.

[MikeE24]

One more question for anyone who may know. Should i be dissapointed w/ these times. I have been told that my car should be a mid 13 sec car w/ these what few mods i have. So if that is true then would the track conditions or maybe the high mileage of my car contribute to my poor times? (98k miles btw) If not any of those things then what should i do to get my times where they should be?

[scotts94_z28]

what were your 60ft times? Traction may have been a problem f they are much over the 2sec mark. I would expect about 13.3 to a 13.7 but the only way to even tell the real time would be to run the 1/4 not use the calculation cause it isnt 100% accurate. My 1/8th times are around the same and i consistantly run 13.6's

[MikeE24]

When i ran the 8.896 my 60' was 2.114 and my 330 was 5.935. It was on street tires at normal air pressure tho. The main reason I want to know is b/c I want to know where I am before I start doing more serious mods to the car. I guess the only sure fire way is to make the drive down to Montgomry and get a accurate 1/4 time.

[scotts94_z28]

yeah that is the only way to tell is to go to the 1/4 but you should probably get some better street tires if you really want to get some good times since 2.1 isnt very good for an LS1. Maybe you should try heating the tires better cause if they wernt hot they wouldnt stick as well. Make sure to hold the burnout till you can see the tires smoking and make sure you are out if the water befor you start the burnout. If that doesnt work id go for some nitto 555's or another comparable street tire with excellent dry traction.

[MikeE24]

thanx for the advice. I had been previously misinformed that I should only clean off whatever dirt was on the tires off durning my burnout. An old friend of mine said that since they weren't slicks or DR's or anything like that heating them wouldn't make much of a difference. thanx to everyone for your responses

[tclelland]

Maybe you should try heating the tires better cause if they wernt hot they wouldnt stick as well.

It is my understanding that the only thing this accomplishes is wasting the tread on your tires. Get some drag radials.

[fastTa]

yeah that is the only way to tell is to go to the 1/4 but you should probably get some better street tires if you really want to get some good times since 2.1 isnt very good for an LS1. Maybe you should try heating the tires better cause if they wernt hot they wouldnt stick as well. Make sure to hold the burnout till you can see the tires smoking and make sure you are out if the water befor you start the burnout. If that doesnt work id go for some nitto 555's or another comparable street tire with excellent dry traction.

Heating a street radial will only make traction worse. Drive around the water box if possible.

[ryan34]

according to the bottom of the page of this site http://www.ondoperformance.com/calculators.html high 13's to low 14's

Is that sight, horsepower at the flywheel or to the ground?

[scotts94_z28]

i believe the calculation shows how much wheel hp

[etz28]

Similar TImes

my best run was 13.845 @ 99.41mph and my 1/8 was 8.930 @79.91mph (60 feet 2.086 sec). This was done without the mod of the 1.6 rollers. So I understands that you should be close to that.