What year did NHRA change the FI Class

Tom Meyer · 01-09-2025, 09:24 AM

When did Nhra change stock from FI classes back to reglar stock indexes? Also what was the indexes for FI combos? Somebody have some old rule books out there. Thanks Tom

Charles Stewart · 01-09-2025, 09:51 AM

Hi Sir,
In 2008.
FYI, FI Class weight breaks below.
Still searching for the FI index...

Nick Heath · 01-09-2025, 10:34 AM

Just scanning an old Indy qualifying sheet (and going off memory), I am pretty certain the indexes and weight breaks were the same as the corresponding "classic" stock class (so today's indexes plus 0.30). Although there was not a FI class for every classic stock class:.

Quote:

A/S = A/FI (11.25 / 11.30 Auto)
C/S = B/FI (11.65 / 11.70)
E/S = C/FI (11.95 / 12.00)
G/S = D/FI (12.20 / 12.30)
I/S = E/FI (12.50 / 12.60)
K/S = F/FI (12.85 / 12.95)
M/S = G/FI (13.15 / 13.15)
O/S = H/FI (13.40 / 13.45)
P/S = I/FI (13.65 / 13.75)
R/S = J/FI (14.25 / 14.35)
U/S = K/FI (14.95 / 15.15)
V/S = L/FI (15.55 / 15.80)
W/S = M/FI (16.70 / 16.95)

BRETV · 01-09-2025, 12:01 PM

It was 2003. I ran M/SA in 2002 and had to switch to G/FIA in 2003. Sorry Tom, I read it the wrong way LOL

Bret Velde
2003 I/SA

kdanner · 01-09-2025, 06:16 PM

A lot of times you can find things like this on the wayback macine. Here are indexes: https://web.archive.org/web/20060501...dexes_stk.html

Tom Meyer · 01-09-2025, 08:07 PM

If my memory is correct the injected cars started in reg stock, then because they were faster then switched to a injected class and then it was switched back to the reg classes. Big Al showed up at the winters and went in the nines with his. When did the half pound classes start? I guess what I am looking for is when the LS1 got power in 2012 what class was it in? Thanks Tom

Charles Stewart · 01-10-2025, 11:28 AM

Quote:

Originally Posted by kdanner

A lot of times you can find things like this on the wayback macine. Here are indexes: https://web.archive.org/web/20060501...dexes_stk.html

Thank kdanner,
Very useful link. I really appreciate it.

Jason Shepard · 01-11-2025, 01:45 AM

Quote:

Originally Posted by Tom Meyer

If my memory is correct the injected cars started in reg stock, then because they were faster then switched to a injected class and then it was switched back to the reg classes. Big Al showed up at the winters and went in the nines with his. When did the half pound classes start? I guess what I am looking for is when the LS1 got power in 2012 what class was it in? Thanks Tom

I wonder whatever happened to that car?��

01-09-2025, 09:24 AM	#1
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 932 Likes: 73 Liked 351 Times in 120 Posts	What year did NHRA change the FI Class When did Nhra change stock from FI classes back to reglar stock indexes? Also what was the indexes for FI combos? Somebody have some old rule books out there. Thanks Tom __________________ Tom Meyer 5240 SS Stock ???

01-09-2025, 09:51 AM	#2
Charles Stewart Member Join Date: Jul 2016 Posts: 389 Likes: 1,655 Liked 753 Times in 213 Posts	Re: What year did NHRA change the FI Class Hi Sir, In 2008. FYI, FI Class weight breaks below. Still searching for the FI index... Last edited by Charles Stewart; 01-31-2025 at 06:12 PM.

01-09-2025, 12:01 PM	#4
BRETV Senior Member Join Date: Oct 2003 Posts: 555 Likes: 4,051 Liked 759 Times in 193 Posts	Re: What year did NHRA change the FI Class It was 2003. I ran M/SA in 2002 and had to switch to G/FIA in 2003. Sorry Tom, I read it the wrong way LOL Bret Velde 2003 I/SA

01-09-2025, 06:16 PM	#5
kdanner Member Join Date: Nov 2003 Location: Austin, TX Posts: 221 Likes: 50 Liked 38 Times in 17 Posts	Re: What year did NHRA change the FI Class A lot of times you can find things like this on the wayback macine. Here are indexes: https://web.archive.org/web/20060501...dexes_stk.html __________________ K Danner STK 468

01-09-2025, 08:07 PM	#6
Tom Meyer Senior Member Join Date: Aug 2003 Location: Pierce NE Posts: 932 Likes: 73 Liked 351 Times in 120 Posts	Re: What year did NHRA change the FI Class If my memory is correct the injected cars started in reg stock, then because they were faster then switched to a injected class and then it was switched back to the reg classes. Big Al showed up at the winters and went in the nines with his. When did the half pound classes start? I guess what I am looking for is when the LS1 got power in 2012 what class was it in? Thanks Tom __________________ Tom Meyer 5240 SS Stock ???