Good Track Times?
#1
Good Track Times?
I went to Virginia Motorsports Park and ran my car in the 1/4.
her times are:
60' - 2.358
1/8 - 10.300
MPH - 69.24
1/4 - 15.978
MPH - 83.30
The engine is a stock 305 TPI with 180,000+ miles on the motor, 700R4 transmission, and 2.73 gears. Go to www.hrhosts.com/slo86ta and under modifications will list everything that I have done to her or replaced.
her times are:
60' - 2.358
1/8 - 10.300
MPH - 69.24
1/4 - 15.978
MPH - 83.30
The engine is a stock 305 TPI with 180,000+ miles on the motor, 700R4 transmission, and 2.73 gears. Go to www.hrhosts.com/slo86ta and under modifications will list everything that I have done to her or replaced.
#2
That seems a little on the slow side. F.Y.I. my 92 cavalier(3.1MPFI, auto) ran a 10.14 in the 1/8 and a 15.79 in the 1/4 at 84 m.p.h Maybe someone a bit more in the knowledge of the 305 can give you more of an idea of what it should run with your mods..
P.S. not trying to tick you off or nothin like that, just wanted to give you something to compare your times to
P.S. not trying to tick you off or nothin like that, just wanted to give you something to compare your times to
#5
Senior Member
Joined: Aug 1999
Posts: 617
Likes: 0
From: Central, NJ
Car: 1989 IROC-Z
Engine: 350 Vortech Supercharged ZZ4 TPI
Transmission: T56
Axle/Gears: 3.73
People are saying that your 305 TPI should run between 85-88mph and that your 83mph is a little low. Now that is true... your 83mph IS a little low. Taking into consideration that you claim "180,000+ miles" on the motor and trans, 83mph is not bad at all.
The way I look at it, the 2.73 is what is really killing your ET.
Other than that... not to bad, all things considered.
The way I look at it, the 2.73 is what is really killing your ET.
Other than that... not to bad, all things considered.
#6
Supreme Member
Joined: Dec 2001
Posts: 1,960
Likes: 1
From: Newark, DE
Car: 2006 Corvette
Engine: LS2
Transmission: T56
Axle/Gears: 3.42s
id agree that a 83 mph trap speed is a little slow, my 84' LG4 turns 85mph on a good day!. but your E/Ts could be better if you hook, id work on that 2.3 sec 60ft
#7
Next time I head out there, I'm going to try a couple of other things. I had a small miss also and pulled the plug out just to find that it was carbon fouled. I'll also try lowering tire pressure and warming the tires which I also didn't do. That was also my first time ever running at a drag strip and the 2nd run I did that night.
Thanks for the info on working with the 60' times. Any other suggestions that you all might have with getting a better time in a stock TA?
Thanks for the info on working with the 60' times. Any other suggestions that you all might have with getting a better time in a stock TA?
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#8
Joined: Dec 2000
Posts: 1,912
Likes: 48
From: NC
Car: 1987 Iroc
Engine: 357 Single plane and a Ysi vortech
Transmission: T56
Axle/Gears: 3.50 9"
That is around what my car ran stock too. Headers and a cam put me in the very low 9' s in the 1/8 and 8.0 on the NOS
Chris
Chris
#9
Supreme Member
Joined: Sep 1999
Posts: 3,197
Likes: 6
From: Manassas VA
Car: 04 GTO
Engine: LS1
Transmission: M12 T56
I'd venture you definitely have a real bug of some nature biting you. 15.9 would be a great ET for an 83mph trap speed. However, you will not run a great ET for your MPH with such a bad 60', you'd need like a 2.0 for that to seem reasonable.
In other words, you're definitely losing power to that miss or some detonation or something somewhere past the 300' mark. I doubt it's just the engine's mileage hurting you with the way those numbers line up. IMHO anyway...
In other words, you're definitely losing power to that miss or some detonation or something somewhere past the 300' mark. I doubt it's just the engine's mileage hurting you with the way those numbers line up. IMHO anyway...
#10
i got the 86 305 tpi and with my 2.77 i ran a 16.00 at 87 mph now i got the 3.42 gears in it and run 15.7 at 90 mph .my car only has 38 000 kilometersmy mods were hypertech chip high flow muffler no cat k@n filter tpis air foil now peole are telling me that the cam in are cars are junk they may be right now can someone that no's there ****t tell me would changing the cam on my car be good for a mid 14 because from where i am it seems like impossible thanks
#12
UPDATE!
Well, I finally got ahold of my brother camera and found out that it doesn't take really good closeup pics. I decided to set the sparkplug on the scanner and it actually came out pretty decent!
here's a picture of the spark plug from the 8th cylinder. How many 10th's of a second do you think this would cost?
here's a picture of the spark plug from the 8th cylinder. How many 10th's of a second do you think this would cost?
#15
Member
Joined: Feb 2001
Posts: 428
Likes: 0
From: NJ
Car: 88 GTA
Engine: 305
Transmission: Auto
Axle/Gears: 3.23
Hey my 87 GTA with the 200K mile 305 TPI, auto tranny and 3.23 gears ran a 15.8 at 84mph.
Now with the 100K mile 350 TPI, auto tranny, dual cats, hearders, and the 5.0 chip it runs a 14.8 at 91mph.
Dave
Now with the 100K mile 350 TPI, auto tranny, dual cats, hearders, and the 5.0 chip it runs a 14.8 at 91mph.
Dave
#16
Senior Member
Joined: May 2000
Posts: 625
Likes: 0
From: Where the Devil Dances, IL
Car: 87Z
Engine: ?
Transmission: A4
Originally posted by L98IROCZ89
The way I look at it, the 2.73 is what is really killing your ET.
Other than that... not to bad, all things considered.
The way I look at it, the 2.73 is what is really killing your ET.
Other than that... not to bad, all things considered.
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