View Full Version : munci capability through quarter mile
MarcDant
08-19-2015, 01:57 AM
whats the best quarter mile time any one has run with a munci 4 speed and slick with out breakage. thanks marc.
Stage_2
08-19-2015, 02:00 AM
I ran an 11.40s with my 73 Z and the original M21 back in the day when I used to drag race it almost every weekend. Still works perfectly.
markjohnson
08-19-2015, 02:11 AM
Ask this same question next week after the Reunion in Bowling Green!
MarcDant
08-19-2015, 02:13 AM
Jeff what rear gear ratio.
MarcDant
08-19-2015, 02:51 AM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: markjohnson</div><div class="ubbcode-body">Ask this same question next week after the Reunion in Bowling Green! </div></div> Like theres no other race tracks in the world. <<GRAEMLIN_URL>>/hmmm.gif
markjohnson
08-19-2015, 03:18 AM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: marshall</div><div class="ubbcode-body">Jeff what rear gear ratio. </div></div>
What rear gears? I think what clutch is in front of it would have been a better question.
MarcDant
08-19-2015, 12:36 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: markjohnson</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: marshall</div><div class="ubbcode-body">Jeff what rear gear ratio. </div></div>
What rear gears? I think what clutch is in front of it would have been a better question. </div></div> Hey professer you just answered 2 questions with 2 questions.If i wanted to hear from a smart ass i would fart.Go find another pot to p-ss in.I know what questions i want to ask professer Johnson.
Stop being a jerk marshall. We're on a discussion forum and this ain't that far off topic. Not like it is paid tech support. You may have just chilled future replies man. Lighten up.
MarcDant
08-19-2015, 01:38 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: pxtx</div><div class="ubbcode-body">Stop being a jerk marshall. We're on a discussion forum and this ain't that far off topic. Not like it is paid tech support. You may have just chilled future replies man. Lighten up. </div></div>So im a jerk for deffening my simple question. Must take one to know one.you said it not me.You TRYING to get me kicked off this site.
cook_dw
08-19-2015, 02:09 PM
Geez... And I thought I was having a bad day...
http://www.yoyonation.com/talk/Smileys/alive/grouphug.gif
novadude
08-19-2015, 02:39 PM
If you want to know the ultimate strength of a Muncie, and if it will survive in your particular car, you might as well ask how many angels can dance on the head of a pin.
What clutch?
What gear ratio?
Vehicle weight?
M20, 21 or 22?
All factory gears, case, etc, or upgraded aftermarket parts?
Tires?
Chassis set-up?
How much of the gearbox fatigue life has been "used up"?
How hard is the launch?
Does it wheelhop?
etc, etc, etc....
The simple answer is to go to the track and find out. If it breaks, fix it.
1969L78Nova
08-19-2015, 02:43 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: novadude</div><div class="ubbcode-body">If you want to know the ultimate strength of a Muncie, and if it will survive in your particular car, you might as well ask how many angels can dance on the head of a pin.
What clutch?
What gear ratio?
Vehicle weight?
M20, 21 or 22?
All factory gears, case, etc, or upgraded aftermarket parts?
Tires?
Chassis set-up?
How much of the gearbox fatigue life has been "used up"?
How hard is the launch?
Does it wheelhop?
etc, etc, etc....
The simple answer is to go to the track and find out. If it breaks, fix it.
</div></div>
And a few missed power shifts !!!!
MarcDant
08-19-2015, 04:27 PM
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: novadude</div><div class="ubbcode-body">If you want to know the ultimate strength of a Muncie, and if it will survive in your particular car, you might as well ask how many angels can dance on the head of a pin.
What clutch?
What gear ratio?
Vehicle weight?
M20, 21 or 22?
All factory gears, case, etc, or upgraded aftermarket parts?
Tires?
Chassis set-up?
How much of the gearbox fatigue life has been "used up"?
How hard is the launch?
Does it wheelhop?
etc, etc, etc....
The simple answer is to go to the track and find out. If it breaks, fix it.
</div></div>Here are some pics of my m21 input shaft as you can see the splines are bent and close to breakage.Dint even make to the track.By the way it was a less than 300.dollar hays clutch and a stock balanced flywheel with a 3-73 rear.This was in a 70 nova with a small block.Dint damage the tranny made alittle metalic noise. when I took it apart noticed 3and4 gear knocked the snap ring off the main shaft due to the sudden load.Thats why i started this thread.Was just looking for simple input from the more experienced and the people that bought these cars new.Good thing i didnt drive to the track because the hook would have cost me 5or6 hundred dollars for transportation back home.Thanks marc. http://www.yenko.net/ubbthreads/pics/usergals/2015/08/full-18984-30604-img_1.png
http://www.yenko.net/ubbthreads/pics/usergals/2015/08/full-18984-30605-img_2.png
http://www.yenko.net/ubbthreads/pics/usergals/2015/08/full-18984-30606-img_3.png
Stage_2
08-19-2015, 06:05 PM
4.56 at the time. 3.73 currently, I dont drag race it anymore. I tamed it down, smaller cam, dual plane intake, smaller carb. I also recently put in a 5spd tko600
EZ Nova
08-19-2015, 11:31 PM
I have been 10.40's with a stock M21 behind a 396/402 BBc. 4.56 gear 9 X 29.5 slick in '69 Nova. Had a Ram clutch with 3 pads, not a mild clutch, just something we put together for a mild streetcar.
Put the wheels 3 feet in the air and streetrace/beat on weekly for 2 years. Sold it complete for a powerglide set-up.
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