Organized Drag Racing and Autocross Drag racing and autocross discussions and questions. Techniques, tips, suggestions, and "what will I run?" questions.

Can I possibly get into high12s?

Thread Tools
 
Search this Thread
 
Old Aug 24, 2004 | 09:47 PM
  #1  
PONTIMANIAC 90's Avatar
Thread Starter
Member
 
Joined: Dec 2000
Posts: 482
Likes: 0
From: World Axis
Car: 1990 Formula
Engine: treefitty
Transmission: stick
Can I possibly get into high12s?

My previous times are in my sig. This was last year at e-town, SLP day. It was pretty hot that day also.
My new mods are; LCA relocation brackets, eibach springs, KYB shocks and struts and, of course, BFG Drag radials. My other mod is a CAI via hood vents on my harwood cowl hood(I can post pics if anyone wants to see). The CAI dropped operating temps a solid 10* in NY summer heat, stop and go traffic.
So do I have a chance for for high 12s, if I reduce my 60' time to say 1.9 or better?
PS: I also have TQ arm, SFC and LCA already replaced w/aftermarket pieces. I had them during my last year's runs.
Reply
Old Aug 24, 2004 | 09:54 PM
  #2  
7plagues's Avatar
Senior Member
iTrader: (1)
 
Joined: Jan 2004
Posts: 936
Likes: 0
From: UofA(Tucson), AZ
Car: 92 Precision Red Firebird
Engine: v6->357 vortec xe262h rpm intake
Transmission: t5-> t56
Axle/Gears: 10bolt 3.42s
Dude with a 2.4...i hope u where spinnin...cause if u cut a 2.0 or 1.9 u could be mid 13s!!:hail:
Reply
Old Aug 24, 2004 | 10:35 PM
  #3  
AlkyIROC's Avatar
Moderator
25 Year Member
Liked
 
Joined: Jul 1999
Posts: 17,271
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Your 104 mph should be good for low 13's. High 12's is around 106 - 108 mph so you only need a little more HP. Your problem right now is traction. Buy some slicks and stop trying to race on street tires.
Reply
Old Aug 24, 2004 | 10:56 PM
  #4  
PONTIMANIAC 90's Avatar
Thread Starter
Member
 
Joined: Dec 2000
Posts: 482
Likes: 0
From: World Axis
Car: 1990 Formula
Engine: treefitty
Transmission: stick
Sure, I was spinning like mad. But I'm sure mid 13s could be had w/drag radials alone, and w/my MPH.
I'm hopping for some 12s.
I thought that every tenth you knock off the 60' is worth a tenth and half at the end of quarter?
Reply
Old Aug 24, 2004 | 11:01 PM
  #5  
jeffsbluez's Avatar
Member
 
Joined: Jan 2003
Posts: 330
Likes: 0
Car: 91 z28
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
I would say yes. I run a 350 with the same cam,L98 alum heads, full exhaust, 3.73 rear, Pro built auto, 3200 stall, SuperRam and a 28" tall Drag radials. Spohn TA and relo brackets are the only suspension work done to the car. 3690 lb with me in the car. AC and all. Car went a best of 12.32 @ 110.89 with a 1.72 short time. Track was prep bad! best 60' was a 1.60 last year. Temp was 87 deg. F, Humidity was 84 percent and the baro was 28.94. Not the best conditions. Hoping for an 11.99 befor the year is over. good luck! keep me posted.
P.S Where are you from? You can see me run from time to time at Cecil County in MD.
Reply
Old Aug 24, 2004 | 11:12 PM
  #6  
PONTIMANIAC 90's Avatar
Thread Starter
Member
 
Joined: Dec 2000
Posts: 482
Likes: 0
From: World Axis
Car: 1990 Formula
Engine: treefitty
Transmission: stick
Originally posted by Stephen 87 IROC
Buy some slicks and stop trying to race on street tires.
I appreciate your input, as always. But wouldn't drag radials qualify as beyond street tires?
106-108mph for high 12s....good to know. I'm hopping the cooler weather puts me there. Plus I'm hoping my motor is broken-in at 6K.
Reply
Old Aug 24, 2004 | 11:31 PM
  #7  
PONTIMANIAC 90's Avatar
Thread Starter
Member
 
Joined: Dec 2000
Posts: 482
Likes: 0
From: World Axis
Car: 1990 Formula
Engine: treefitty
Transmission: stick
Originally posted by jeffsbluez
I would say yes. I run a 350 with the same cam,L98 alum heads, full exhaust, 3.73 rear, Pro built auto, 3200 stall, SuperRam and a 28" tall Drag radials. Spohn TA and relo brackets are the only suspension work done to the car. 3690 lb with me in the car. AC and all. Car went a best of 12.32 @ 110.89 with a 1.72 short time. Track was prep bad! best 60' was a 1.60 last year. Temp was 87 deg. F, Humidity was 84 percent and the baro was 28.94. Not the best conditions. Hoping for an 11.99 befor the year is over. good luck! keep me posted.
P.S Where are you from? You can see me run from time to time at Cecil County in MD.
Those are great numbers, but you ditched your TPI. I have a Stealth Ram w/all the fixins sitting in my garage...waiting. I just wanna get the most of my TPI set-up before I say good bye to it.
PS: I'm in Brooklyn. I go to E-town but there's a track at Long Island that I keep hearing about I'd like to try one day. BTW what state is MD. Excuse my ignorance.
Reply
Old Aug 24, 2004 | 11:34 PM
  #8  
jeffsbluez's Avatar
Member
 
Joined: Jan 2003
Posts: 330
Likes: 0
Car: 91 z28
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
Maryland
Reply
Old Aug 25, 2004 | 02:00 AM
  #9  
smoktire's Avatar
Member
 
Joined: Feb 2004
Posts: 150
Likes: 0
From: Canada Quebec
Car: 88 camaro
Engine: L69 305
Transmission: TH350 3000stall
Axle/Gears: 3.42
I got 13.17 @104 with 1.91s 60'
Reply
Old Aug 25, 2004 | 06:24 AM
  #10  
84firebird383's Avatar
Senior Member
 
Joined: May 2004
Posts: 608
Likes: 1
From: Oshkosh wi
Car: 77 Firebird
Engine: 454
Transmission: th350
Axle/Gears: 4.10
Drag radials really arent much better than regular radials from my experience. They just cost twice as much and last half as long.Get some real slicks like stehpen 87 iroc said.
Reply
Old Aug 25, 2004 | 10:27 AM
  #11  
jeffsbluez's Avatar
Member
 
Joined: Jan 2003
Posts: 330
Likes: 0
Car: 91 z28
Engine: 350
Transmission: 700r4
Axle/Gears: 3.73
With drag radials you just have to tune your suspension better. There are people running low 8's on drag radial!
Reply
Old Aug 25, 2004 | 07:59 PM
  #12  
AlkyIROC's Avatar
Moderator
25 Year Member
Liked
 
Joined: Jul 1999
Posts: 17,271
Likes: 171
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
How old are the drag radials?

Chances are cars running low 8's on drag radials change them often and they're not driven on the street. For most of us, 1 and maybe 2 seasons of strip only is the life of the tires. Just because there's still rubber left on the tire and the wear bars are still showing doesn't mean the tires are still good.

I still have rubber left on my slicks but I'm changing them because they're just not hooking up like they used to. I'm also putting a larger tire on.
Reply
Old Aug 25, 2004 | 09:18 PM
  #13  
25thmustang's Avatar
Supreme Member
 
Joined: May 2003
Posts: 2,839
Likes: 0
From: CT
Car: Mustang
Engine: Bolt Ons
Transmission: Stock
Axle/Gears: 3.73
Actuall most drag radial racers run them bald and ook the best on the dead bald DRs. As I write this we have a set of 275/60/15 BFGs that we are wearing down for a DR racer!

Look into the new MT Drag Radials. I hear awesome things about them!
Reply
Old Aug 26, 2004 | 12:38 AM
  #14  
AllGoNoShow's Avatar
Member
 
Joined: Oct 2002
Posts: 192
Likes: 0
The ones running 8s on Drag Radials are the ones with 5K in thier suspensions, electronics and ignition box gizmos that have better processors then my computer that can take out timing and limit full throttle for specific rpm intervals and launches.

For the average joe like us, I have found that with a manual(same one you have), drag radials, and a track that doesn't espically keep up on the prep, getting the DRs to hook up is a chore. With your 3.27 1st gear and 4.11s its like having a th350 with like 5.XX gears or something ridiculous like that. Getting the DRs to hook under full throttle out of the hole is going to take a lot of suspension tuning I would think.

You can get DRs to work, just seems easier to bolt on a set of ET Streets as they are more consistant and much more forgiving and a whole lot less work. I'm hanging up my Nitto DRs after this year and picking up some real slicks, gonna be the best thing I ever do.
Reply
Old Aug 26, 2004 | 09:33 PM
  #15  
Section162's Avatar
Member
 
Joined: May 2004
Posts: 105
Likes: 0
From: Grand Rapids, MI
Car: '90 Formula
Engine: L98 --> Ramjet
Transmission: Auto
Originally posted by Stephen 87 IROC
Your 104 mph should be good for low 13's. High 12's is around 106 - 108 mph so you only need a little more HP.
I've always wanted to know - is there a MPH/ET correlation that always holds true? Or, does it depend on the weight of the car (or something else)?
Reply
Old Aug 27, 2004 | 09:07 PM
  #16  
Section162's Avatar
Member
 
Joined: May 2004
Posts: 105
Likes: 0
From: Grand Rapids, MI
Car: '90 Formula
Engine: L98 --> Ramjet
Transmission: Auto
Is the above a dumb question? Maybe. In case it's not, I'll try to ask it differently. This is a theoretical question.

Let's say my thirdgen goes 105mph in the 1/4. According to the above info, that should be good for about a 12 flat ET.

Now let's say I have a car that's a lot lighter - say 2000 lbs. I run this car and it also goes 105mph. Is the "ideal" ET for this car also 12 flat?

I understand that the horsepower requirements for running 105 in each car will be different, but that's not the issue. My question is: is there a mph/ET correlation which generally holds true, regardless of the car your driving?
Reply
Old Aug 30, 2004 | 12:10 PM
  #17  
slow91camaro's Avatar
Member
 
Joined: Sep 2000
Posts: 158
Likes: 0
From: SoCal
Car: '91 Camaro Z-28
Engine: 350
Transmission: auto
I've always wanted to know - is there a MPH/ET correlation that always holds true?
I've run 13.6@108 and a month later ran 13.2@102 in the same car. The only major difference between the two runs was the torque converter. A friend of mine had a car that might better answer your question. He had a vega with a junk v-8 that ran 13.0@96 mph. It was pretty light (not sure how light), had a 3000 stall converter and low 1.6x short times. Re-reading this I'm not sure if I really answered your question, but I hope this helps.
Reply
Old Aug 30, 2004 | 01:22 PM
  #18  
Trevor86TA's Avatar
Supreme Member
 
Joined: Jul 1999
Posts: 1,011
Likes: 0
From: Saskatoon, Saskatchewan, Canada
Car: 86 Trans Am
Engine: 406
Transmission: TH350, 4200
Axle/Gears: Moser 9", 3.89
A rough rule of thumb is that ET*MPH=1350 on a decently setup machine with a proper combination.

i.e.:
15.00@90 mph
14.00@96.4 mph
13.50@100 mph
13.00@103.9 mph
12.00@112.5 mph
11.00@122.7
10.00@135 mph

This assumes sufficient traction. If the car is not setup right (converter, street tires, etc) the product will be higher. Cars that are setup really well will be at the lower (~1325) end of the spectrum.

Again...just a rough rule of thumb.
Reply
Old Aug 30, 2004 | 10:27 PM
  #19  
Section162's Avatar
Member
 
Joined: May 2004
Posts: 105
Likes: 0
From: Grand Rapids, MI
Car: '90 Formula
Engine: L98 --> Ramjet
Transmission: Auto
Thanks for the replies! I have searched the boards and googled, but could never find any such formula or general guideline. That's exactly what I was looking for.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LC2 TECH
History / Originality
3
Oct 13, 2015 11:53 PM
HoosierinWA
Tech / General Engine
5
Oct 7, 2015 10:15 AM
oil pan 4
Fabrication
2
Oct 6, 2015 11:56 AM
Agent507943
Camaros Wanted
5
Oct 2, 2015 07:17 AM
mfp189
Transmissions and Drivetrain
1
Sep 27, 2015 09:25 AM




All times are GMT -5. The time now is 04:37 PM.