Index racing is a blast and they are getting a good turn out for it now. I think you will enjoy it, go for it.

what I have found is that shifting .3 out will only get me about .4 in et. I shut my stop back for the whole run enough to get the rest that I need. that way I am running my car as close to wide open (carb wise) as possible to have as much mph as possible. then I have found that as I move my shift point up or down to maintain the desired et it typically works out to .01 in shift = .01 in et. makes it easy to adjust to the et I want to run.

I have played with this a lot. when my car ran 6.0's I would need to shut my stop about half way to run 7.0. I run 5.80's now and just shift at about .8 or .9 to run 6.00 index.

I personally wouldn't want to get the rest of my et with taking timing out. shutting the stop for me is easier and have found to be very consistent.

ep-

Bill, a restrictor plate is your friend. I slow my car from 5.70s to 6.50s with weight, a restrictor plate and lower shift rpm. I also use the plate to slow it for the 6.0 class.

Yes nitrous will really put you in a good spot in the 6.0 class because you can use it be put you behind and carry a lot of mph. One question though, can you hit the .400 tree? If so then I would say go for it. I love index racing.

I made my own plate system. I don't know how soon you are looking at running but if you wanted to try mine and would pay shipping I would be willing to send it to you to try. I don't have a bunch of small increment plates like the EZ Plate system used. I get close with what I have and use weight and rpm to fine tune. If that is something you would be interested in PM me.

Oh, and it's not some cobbled together thing. It works like the EZ system.

I have never tried to hit a 400 tree. But based on the math from my delayed box numbers I should be in the 30-40 range on the tree. I know I can play with the shocks to get it to react faster. Definitely seems like it would be a fun deal.

quote:

Originally posted by banjo:
I have never tried to hit a 400 tree. But based on the math from my delayed box numbers I should be in the 30-40 range on the tree. I know I can play with the shocks to get it to react faster. Definitely seems like it would be a fun deal.

1000 in the box is triple zero 500 Pro Tree

1100 in the box is triple zero 400 Pro Tree

Take the box out it's worth .015 = 1085 triple zero 400 pro tree.

I went through all this to be double 0 on the .370 Pro Tree Bradenton.

Banjo, check the rules but I think the 7.0 index is a .500 Pro tree, and the 5.80 is a .400. not sure about the other index or which one you want to run.

EZ-Plate and Willys both make adjustable plates.If you put a restrictor plate on it that may also hurt your reaction time a little.

quote:

Originally posted by Curly1:
Banjo, check the rules but I think the 7.0 index is a .500 Pro tree, and the 5.80 is a .400. not sure about the other index or which one you want to run.

EZ-Plate and Willys both make adjustable plates.If you put a restrictor plate on it that may also hurt your reaction time a little.

Index racing is a blast, if you race. If you're out there trying to go dead on, I can't see it being that much fun.

This is a good race I lost, still a blast. This is before I unhooked my delay box and installed the grid. This is 370 pro tree Bradenton.

If you got the power advantage, you can do whatever you want racing with people trying to go dead on index racing. You gotta win the tree though, or this can happen.

Unhook delay box is worth .015

This message has been edited. Last edited by: Mike Rietow,

quote:

Originally posted by Curly1:
Banjo, check the rules but I think the 7.0 index is a .500 Pro tree, and the 5.80 is a .400. not sure about the other index or which one you want to run.

EZ-Plate and Willys both make adjustable plates.If you put a restrictor plate on it that may also hurt your reaction time a little.

I was talking about the 6.0 and below when I commented about the .400 tree.

Do they allow deep staging on the .4 pro tree ?

Bill: Index racing is most fun in dragdacing for door cars these days. Have raced with you, driving the stripe should not be a problem for you.
Mine was 2800# car, BBC that would run 6.0 allout, little slower in the heat. Kenny Ford built me a footbrake converter that turned out to be killer index racing,stalled 4800 behind BBC. Chipped it 4400-4800 on launch, shifted around 5200, adjusted ET with shift chip

Tried an EZ plate, was not happy with it, wanted to try a One Stop manual adjust but age caught up with me.

The nitrous guys run timers off trans brake button but complain about throttle stops. They'll let you get out on them then try to blow by you at the stripe. There are ways to beat them at their game. PM me and l'll fill you in

Ripping the living daylights out of em is what makes it a blast. If you put a restrictor plate on and kill all your power, to go dead on, you may as well just Super Pro race, no restrictor plate. If you got the power to hold a tenth or two, why not. I'm holding 5 tenths in this race.

Bill,
If you're gonna try the 7.0 Index at Xtreme Raceway Park, I'm sure you'll have a blast.
I will advise you to get a good rest the night before, because car count is high, and you'll need to be ready to play deep into the night. And get there early to pick a good pit spot, they get packed pretty tight.

If you've been racing for years with just about everyone having the power to weight advantage on you, and you're handed a class you can turn that around, why would you kill any of your power with a restrictor plate?

That would be the opposite approach to what they do in Super comp, Super Gas. if you got the most power in the parking lot, being consistent is less of an issue for the simple reason you can use everyone else's consistency, as your own.

Ya gotta win the tree though.

Even with a plate in index racing you can still hold some numbers.

I ran S/ST some back in the early 1980's
.400 tree 10.90
Trans brake, small block Vega
I could go around 10.40 with the engine I had at the time
I tried a 500CFM 2 barrel and lost 6 tenths, did not like that setup
Went back to my 750 Holley and just drove it.
Went a bunch of rounds just doing exactly what Mike says.....
Lost a close double B/out and we were very close on the tree....both going 10.85x

One of the most fun days I ever had.....my foot was my throttle stop and it was a riot....

quote:

Originally posted by Curly1:
Even with a plate in index racing you can still hold some numbers.

Very true

The problem with a restrictor plate is it kills power. banjo has a 3200 lb car, 400 pro tree, killing power won't be an option.

Killing mph isn't an option either IMO

banjo already has good power.

With all the technology today grid + power, you're going backwards restrictor plate racing

There's four must haves in index racing IMHO.

The most n/a power, the smallest tires, hold a minimum of a tent, Rip the living daylights out of em.

Tighter torque converter. Kill several tenths of ET without decreasing your MPH.

quote:

Originally posted by SlyFox:
Tighter torque converter. Kill several tenths of ET without decreasing your MPH.

I am thinking that may hurt Consistency as it is no longer working in peak power band.