1975 Index System

jimmyparker · 12-27-2013, 08:52 PM

Attached is copy of index system used in the mid seventies, when I mention this system I always get a blank stare as no one seems to remember it . Play with the math based on todays et's for various classes and it is scary.

Jimmy Parker

jimmyparker · 12-27-2013, 08:55 PM

I see the attachment didn't take, I'll try again later or if someone else has it copied feel free to post.

Jimmy Parker

Ed Wright · 12-27-2013, 09:39 PM

Jimmy I remember when they went into effect. I started running C/SM the year they started that. We could only run one tenth under, no dialing down.

GRAPE · 12-27-2013, 10:29 PM

They called it a Par System. All class's had a 3 didget index. C/S was 4.27 C/SA 4.46

The C/SA car would get a .19 head start. First car to finish line would win .they did this so that any car could run against any other car. A/D index was 0.00 would give 4.27 head start to C/S. A /D Record was 7.50. If you add 7.50 to 4.27 =11.77 that was the ET a competeive
C/S should run.The C/S record was 11.72

Bill Diehl · 12-27-2013, 10:48 PM

Who would like to see it that way today?

Mark Yacavone · 12-28-2013, 01:09 AM

Quote:

Originally Posted by Bill Diehl

Who would like to see it that way today?

Probably a lot more fans..than racers.

Bill Diehl · 12-28-2013, 01:36 AM

Quote:

Originally Posted by Mark Yacavone

Probably a lot more fans..than racers.

Would it kill the car count?

Mark Yacavone · 12-28-2013, 02:35 AM

Quote:

Originally Posted by Bill Diehl

Would it kill the car count?

It already did ..in 75-76
The indexes or par numbers were loosely based on what was being raced at the time.
BBC's, hemis, CJ's , 350's, 327's ,283's etc and so on down.
Therefore you needed a soft factored..what some would call a bogus combo, to beat the system.
Before long all the common cars started staying home because they couldn't win anyway.
By 1976 , breakout racing was brought back to the WCS Divisionals, and by 1977 ,I think to the nationals too.
The great Par System that was supposed to be the end of brakelight racing lasted roughly two years...due to economic reasons.
Then NHRA came up with a better, more profitable scam..
Never lower the indexes,and then letting you dial under them, so just about anybody had a chance to win.

Tom Moock · 12-28-2013, 02:40 AM

Jimmyparker, in the mid 70`s we raced stock off the national record and they didn`t weight the car with the driver, I weighted close to 300 pounds and some of the guys I raced against in my class at indy (1974 I think )less than 150 pounds. the first year I raced my chevy II we had to use L60/15 style street tires, cheater slicks with tread, as I remember, but I`m getting old and that was long time ago. Tom

Freddie Cain · 12-28-2013, 10:02 AM

In division 2 in 1975 the hot ticket was a W through Z/SA 6 cylinder Chevelle.A Florida racer in a 6 cylinder glide Chevelle convertible won the Warner Robins points meet with ease.Check out the results for the Sports Nationals at Bowling Green that year,finalist were a Corvair and a 6 cylinder Chevelle wagon.

12-27-2013, 08:52 PM	#1
jimmyparker Member Join Date: Oct 2009 Location: columbus, georgia Posts: 385 Likes: 65 Liked 309 Times in 88 Posts	1975 Index System Attached is copy of index system used in the mid seventies, when I mention this system I always get a blank stare as no one seems to remember it . Play with the math based on todays et's for various classes and it is scary. Jimmy Parker

12-27-2013, 08:55 PM	#2
jimmyparker Member Join Date: Oct 2009 Location: columbus, georgia Posts: 385 Likes: 65 Liked 309 Times in 88 Posts	Re: 1975 Index System I see the attachment didn't take, I'll try again later or if someone else has it copied feel free to post. Jimmy Parker

12-27-2013, 09:39 PM	#3
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: 1975 Index System Jimmy I remember when they went into effect. I started running C/SM the year they started that. We could only run one tenth under, no dialing down. __________________ Ed Wright 4156 SS/JA Last edited by Ed Wright; 12-27-2013 at 09:41 PM.

12-27-2013, 10:29 PM	#4
GRAPE Member Join Date: Mar 2008 Posts: 115 Likes: 0 Liked 1 Time in 1 Post	Re: 1975 Index System They called it a Par System. All class's had a 3 didget index. C/S was 4.27 C/SA 4.46 The C/SA car would get a .19 head start. First car to finish line would win .they did this so that any car could run against any other car. A/D index was 0.00 would give 4.27 head start to C/S. A /D Record was 7.50. If you add 7.50 to 4.27 =11.77 that was the ET a competeive C/S should run.The C/S record was 11.72

12-27-2013, 10:48 PM	#5
Bill Diehl Member Join Date: Dec 2013 Posts: 311 Likes: 2 Liked 9 Times in 8 Posts	Re: 1975 Index System Who would like to see it that way today?

12-28-2013, 02:40 AM	#9
Tom Moock Senior Member Join Date: May 2004 Posts: 801 Likes: 1 Liked 10 Times in 6 Posts	Re: 1975 Index System Jimmyparker, in the mid 70`s we raced stock off the national record and they didn`t weight the car with the driver, I weighted close to 300 pounds and some of the guys I raced against in my class at indy (1974 I think )less than 150 pounds. the first year I raced my chevy II we had to use L60/15 style street tires, cheater slicks with tread, as I remember, but I`m getting old and that was long time ago. Tom __________________ Tom Moock 5704 STK

12-28-2013, 10:02 AM	#10
Freddie Cain Junior Member Join Date: Feb 2008 Posts: 33 Likes: 1 Liked 2 Times in 2 Posts	Re: 1975 Index System In division 2 in 1975 the hot ticket was a W through Z/SA 6 cylinder Chevelle.A Florida racer in a 6 cylinder glide Chevelle convertible won the Warner Robins points meet with ease.Check out the results for the Sports Nationals at Bowling Green that year,finalist were a Corvair and a 6 cylinder Chevelle wagon.