NHRA 283cid Stocker Engine

General engine tech -- Drag Racing to Circle Track

Moderator: Team

rustbucket79
Guru
Guru
Posts: 2151
Joined: Fri Apr 07, 2006 8:23 pm
Location:

Re: NHRA 283cid Stocker Engine

Post by rustbucket79 »

I saw on one of the posts what I assume to be dyno results up to 8000, any idea where he shifts and traps at? I have a theory and am curious how close to truth it actually is.
maxracesoftware
Vendor
Posts: 3647
Joined: Sat Feb 14, 2004 4:04 pm
Location: Abbeville, LA
Contact:

Re: NHRA 283cid Stocker Engine

Post by maxracesoftware »

rustbucket79 wrote: Mon Nov 29, 2021 11:46 pm I saw on one of the posts what I assume to be dyno results up to 8000, any idea where he shifts and traps at?
I have a theory and am curious how close to truth it actually is.
i'll try to calculate this for you later on .

meanwhile , you might be interested in this new "old" year 2011 NHRA ProStock info i just received
on Shift and Cross RPMs ... a decent Run for 2011 ... Qualified in lower half of 16 Car field

RacePak Data every 0.001 of a second :

NHRA ProStock
Year= 2011
6.640 ET at 209.20 MPH
every 0.001 of a second
1st-2nd Shift = 9968 RPM falls down to 8344 RPM
2nd-3rd Shift = 10627 RPM falls down to 9171 RPM
3rd-4th Shift = 10488 RPM falls down to 8805 RPM
4th-5th Shift = 10456 RPM falls down to 8468 RPM
10461 RPM Cross

somewhere around these Trans Gear Ratios : ???????
2.6099
1.9396
1.5539
1.2560
1.0000

the Geometric Progression Trans Ratios would be :
Geometric Progression Ratio = 0.78676319
Gear 1 = 2.610
Gear 2 = 2.053
Gear 3 = 1.616
Gear 4 = 1.271
Gear 5 = 1.000
MaxRace Software
PipeMax and ET_Analyst for DragRacers
https://www.maxracesoftwares.com
rustbucket79
Guru
Guru
Posts: 2151
Joined: Fri Apr 07, 2006 8:23 pm
Location:

Re: NHRA 283cid Stocker Engine

Post by rustbucket79 »

Much appreciated
barnym17
Guru
Guru
Posts: 1353
Joined: Fri May 12, 2006 4:37 pm
Location:

Re: NHRA 283cid Stocker Engine

Post by barnym17 »

On a side note What I've done is use my old version of et analyst as an et predictor for bracket racing works great.
Post Reply