1/4 Mile Time.
Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 1,143
Likes: 81
From: Finger Lakes Region, New York
1/4 Mile Time.
So I went to the track the other night after I finally got the car broken in and running good. This is an 84' with an LT1 swap, cc503, gasket matched heads, LT's, stock throttle body, stock 3.07 gears, T-56 swap, stock opti. I ran a best of 12.9 @111. I feel that I should have gotten more after all I've heard LT1 F-bodies running mid 12's. I couldn't really launch either though, she either spun or I bogged her. I feel a set of gears might be in the works. Any ideas?
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
According to some 1/4 mile calculators, they indicate that it would take 350 FWHP to run a 12.9 quarter. Since a LT1 is 300 stock it's possible that your mods have netted another 50 HP or so. You don't mention headers, head porting, exhaust work so that may be pretty accurate. The 3.07 gears aren't helping wither. Your time sounds pretty good for your mods.
Melting Slicks
Joined: Mar 2002
Posts: 2,203
Likes: 63
From: Staten Island NY
If you are spinning or bogging at the start thats going to cost you a few 10ths at the big end of the track. You really need to perfect the launch. Whats your 60 foot time?
Also 12.5 is very fast for an LT1 F-body, No way is that a time for a stock motor, are you sure its not an LS1?
Also 12.5 is very fast for an LT1 F-body, No way is that a time for a stock motor, are you sure its not an LS1?
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Work on a sticker tire and getting the car to leave to see what its really doing before changing gears. 111mph for an essentially stock LTx with a cam/headers isnt bad at all.
Safety Car
Joined: Apr 2005
Posts: 3,624
Likes: 431
From: Dale City VA
I agree with Ron.
Work on getting a better tire first. The MT drag radials are great if your going to drive them on the street too.
That 3.07 gear might not be all that bad depending on which T56 you have.... Some of the 93 F body ones have a very steep low gear.
12.9@111mph is booking for what you have. My 92 LT1 6spd ran a best of 13.30 @108mph (when it was still stock).
Will
Work on getting a better tire first. The MT drag radials are great if your going to drive them on the street too.
That 3.07 gear might not be all that bad depending on which T56 you have.... Some of the 93 F body ones have a very steep low gear.
12.9@111mph is booking for what you have. My 92 LT1 6spd ran a best of 13.30 @108mph (when it was still stock).
Will
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Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 1,143
Likes: 81
From: Finger Lakes Region, New York
R/T-.825
60'- 2.149
330-5.712
1/8-8.543
MPH-87.08
1000-10.963
1/4-12.989
MPH-111.35
That is the slip, those mid 12 F-bodies have a cc503 swap and basically the same mods as me. Factory freaks? Also I am spinning or bogging out of the hole, one time I tried to slip the clutch in hard but ended up burning the clutch through 1st gear. (didn't realize that until the smell) :0 Also another thing I have noticed lately, the Corvette is faster than my Camaro but the Corvette will NOT EVER chirp into 2nd. Not even the littlest noise... The Camaro's rear comes sideways a little at the track going into 2nd and chirps 3rd. Are the Y-bodies setup THAT much better where they won't spin the tires much? I think it's pretty neat...
60'- 2.149
330-5.712
1/8-8.543
MPH-87.08
1000-10.963
1/4-12.989
MPH-111.35
That is the slip, those mid 12 F-bodies have a cc503 swap and basically the same mods as me. Factory freaks? Also I am spinning or bogging out of the hole, one time I tried to slip the clutch in hard but ended up burning the clutch through 1st gear. (didn't realize that until the smell) :0 Also another thing I have noticed lately, the Corvette is faster than my Camaro but the Corvette will NOT EVER chirp into 2nd. Not even the littlest noise... The Camaro's rear comes sideways a little at the track going into 2nd and chirps 3rd. Are the Y-bodies setup THAT much better where they won't spin the tires much? I think it's pretty neat...
Last edited by v8vette84; Aug 6, 2011 at 10:49 PM.
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
v8vette84, Your 60 foot time is killing you. Get that down and you will run faster. Tricky, launching a stick car, but can be done. Seat time...I'm working on my launches too...
See this it might help...http://www.rangeracceleration.com/Launch_Tips.html
Overboost, you what kind of 60 foot time did you have on that 13.06? LT1's with a good driver are faster than people like to admit. Can be faster than C5's no problem. I've seen LS6 Z06's run 13.2's for cry'in out loud. C6's running 13.0. A LOT OF IT COMES DOWN TO DRIVER.
In good conditions I have ran trap speeds of 108-109MPH with all stock except for Cut Air Lid with K&N filter, X-pipe in place of resonator, and muffler eliminators. My 60's need work, I can get 2.1's pretty constantly which tend net me 13.50 flat ET's.
I always chrip 2nd then again I'm on street tires.
Driver Mod...
See this it might help...http://www.rangeracceleration.com/Launch_Tips.html
Overboost, you what kind of 60 foot time did you have on that 13.06? LT1's with a good driver are faster than people like to admit. Can be faster than C5's no problem. I've seen LS6 Z06's run 13.2's for cry'in out loud. C6's running 13.0. A LOT OF IT COMES DOWN TO DRIVER.
In good conditions I have ran trap speeds of 108-109MPH with all stock except for Cut Air Lid with K&N filter, X-pipe in place of resonator, and muffler eliminators. My 60's need work, I can get 2.1's pretty constantly which tend net me 13.50 flat ET's.
I always chrip 2nd then again I'm on street tires.
Driver Mod...
Last edited by 93Rubie; Aug 6, 2011 at 11:01 PM.
Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 1,143
Likes: 81
From: Finger Lakes Region, New York
Also if I get DR's will I run the risk of killing the Dana36? I don't have the money or the want to get the gears changed right now so I might do DR's. Is it a toss up?
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Ditto on your 60'
Straight axle cars will feel a little different.
Quit listenting to all the internet guys and their times, just work on getting to know/drive your car better.
Know that air quality has something to do with times, too.
Some get that awesome mineshaft quality air, others not so much so two identical cars in different parts of the country can run different times.
Think youll be happy with your ET once you get it to leave right.
Time to go tire shopping!
Straight axle cars will feel a little different.
Quit listenting to all the internet guys and their times, just work on getting to know/drive your car better.
Know that air quality has something to do with times, too.
Some get that awesome mineshaft quality air, others not so much so two identical cars in different parts of the country can run different times.
Think youll be happy with your ET once you get it to leave right.
Time to go tire shopping!
Safety Car
Joined: Sep 2010
Posts: 3,752
Likes: 190
From: Indiana PA
I would the best gear lube you can in it. Redline SHOCKPROOF Heavyweight Gear Oil would do nicely.
Do you have stock clutch? Ideally, the clutch should take the most abuse this saves the rest of the drive line from it. The launch is hardest on it, obviously.
Safety Car
Joined: Feb 1999
Posts: 4,724
Likes: 16
From: Little Elm TX
I agree with the others, you're doing great and work on getting that 60 ft down.... with slicks, you should be able to get it down to at least 1.8 and even a 1.7x despite having a manual transmission..... that'll turn that high 12 into a mid 12 second time easily.
Also bear in mind, if you ran that 111 mph in July or August, you've hurt your trap speed by 2-3 mph vs some good fall or spring air. Thus, 113-114 mph is very possible.... which is good for easy low 12's if you're hooking up and you might even slip into the high 11's.
good luck !
Also bear in mind, if you ran that 111 mph in July or August, you've hurt your trap speed by 2-3 mph vs some good fall or spring air. Thus, 113-114 mph is very possible.... which is good for easy low 12's if you're hooking up and you might even slip into the high 11's.
good luck !
Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 1,143
Likes: 81
From: Finger Lakes Region, New York
According to the weather channel it was 85 degrees at 7 PM and humidity was 55% and was 77 degrees and humidity was 70% by 10 pm when I quit running. Also another issue I'm having is the intake I'm using is a flipped upside down B-body rubber elbow (with the hockey puck stuck into the huge hole) and it sits just to the right side of the motor. I have no place to run it as for one there is literally no room to run it farther away from the motor (there is no place for it) and 2 I have an 84' hood so I can't use an LT1 or L98 intake b/c It has the ducts for the crossfire CAI. I'm trying to design some kind of CAI as this filter has to be sucking in some extremely hot underhood air...
Also the humidity change and temps didn't seem to change my times all that much but I did notice I did hit the 12's after the sun went down and I got more consistent 110-111 mph's....
Also the humidity change and temps didn't seem to change my times all that much but I did notice I did hit the 12's after the sun went down and I got more consistent 110-111 mph's....
Last edited by v8vette84; Aug 7, 2011 at 12:18 AM.
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
Definately good times for what you have. The best I could get was 13.8. I had trouble hooking up too. When autoxing I use Hoosier A6's but I decided to drive to the drag strip this afternoon so I just put on my rain Kumho V700's, which are race compund rain tires. I would like to have ran the A6's for better hook up, but don't want to waste those tires. The temp here was 91 degree F with 90+ humidity. Probably not ideal conditions, but I was trying to find optimum shift points. 
Thread Starter
Burning Brakes
Joined: Dec 2009
Posts: 1,143
Likes: 81
From: Finger Lakes Region, New York
Well I hope she runs better a little later in the season if I can get her on Drag radials. I have the original wheels from the 84', can I put a set of slicks on them? What size tire do I need? Thanks a lot for the help!
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Dont necessarily need slicks, a good drag radial will do as Will said
Mickey Thompson
M and H
Toyo Proxy
There are others. Whatever will fit on your wheel (factory tire size) will be plenty.
Mickey Thompson
M and H
Toyo Proxy
There are others. Whatever will fit on your wheel (factory tire size) will be plenty.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
If you do run with slicks, you will soon be shopping for a Dana 44. That's pretty much guaranteed.