Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2157860
09/20/16 12:19 AM
09/20/16 12:19 AM
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Joined: Jan 2003
Posts: 11,729 Portage,michigan
B3422W5
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I Live Here
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Portage,michigan
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To tell where the convertor hits/ flashes at, I put the car in high gear, and at a slow roll stab the pedal hard, watch the tach.
69 Dart GTS A4 Silver All steel, flat factory hood, 3360race weight 418 BPE factory replacement headed stroker, 565 lift solid cam Best so far, low 10.30’s 1/4 1.41 best 60 foot 6.56 at 104.17
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Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2157964
09/20/16 08:23 AM
09/20/16 08:23 AM
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Joined: Jan 2003
Posts: 17,926 Akron, Ohio
ProSport
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Akron, Ohio
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My favorite way is to point a video camera at the tachometer and watch it in slow motion but you can also do it the way these guys suggested, just don't do it too long or too often as it is not very good for the converter, my 8" ATI actually said not to do that in the instructions but we all do it.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2157990
09/20/16 10:33 AM
09/20/16 10:33 AM
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Joined: Oct 2007
Posts: 4,213 New York
polyspheric
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master
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New York
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Make sure your fluid temperature is up, or the results won't be consistent with actual use.
Boffin Emeritus
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Re: How to check for stall (converter) Schooling needed.
[Re: dvw]
#2157993
09/20/16 10:40 AM
09/20/16 10:40 AM
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Joined: Jan 2003
Posts: 10,021 Frostbitefalls MN (Rocky&Bullw...
gregsdart
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Check the rpm it falls back to on the shift. Doug I found that the tach fooled me when I tried to stall it in high gear, or against the trans brake. I didn't have traction anywhere but on the track, and tach needle momentum sent the needle too high when revving against the transbrake. You won't have accurate info though IMHO unless you have a video , playback tach, or a data logger.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2158061
09/20/16 12:39 PM
09/20/16 12:39 PM
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Joined: Feb 2012
Posts: 368 michigan
turbo toad
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enthusiast
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michigan
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Sorry this us kind of off the OP's topic but good info from some known names in the convertor industry. And I thought it was a good read if you guys have a couple minutes take a look in this thread it cleared up some misleading thoughts I had about how convertors work. http://www.yellowbullet.com/forum/showthread.php?t=1159754
Check out my build on Facebook Ttoad Hurley its updated regularly
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Re: How to check for stall (converter) Schooling needed.
[Re: dvw]
#2158196
09/20/16 06:17 PM
09/20/16 06:17 PM
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Joined: Sep 2003
Posts: 422 montana
BANDIT
mopar
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mopar
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Posts: 422
montana
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So my delay box has an rpm playback feature that shows the motor at 5600 rpm at launch, but it shows dropping to 6000 rpm after shift. You are saying that the 6000 number is the actual stall speed? jim
64 Dodge Coronet 440. In progress 1998. Dodge Avenger. 8.35@165. 4400 DA 250” Neil and Parks Slip Joint. 7.36@183. 4600 DA 242" Mullis Dragster. 6.90@ 200mph
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Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2158197
09/20/16 06:23 PM
09/20/16 06:23 PM
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Joined: Jan 2012
Posts: 2,686 Stuttgart, Arkansas
rickseeman
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master
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Stuttgart, Arkansas
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Everybody has their own idea of what "stall" is. To me it is the RPM that you see on the tach when you floor it at the starting line.
2011 Drag Pak Challenger
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Re: How to check for stall (converter) Schooling needed.
[Re: turbo toad]
#2158210
09/20/16 06:44 PM
09/20/16 06:44 PM
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Joined: Feb 2005
Posts: 20,203 PA.
pittsburghracer
"Little"John
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"Little"John
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Sorry this us kind of off the OP's topic but good info from some known names in the convertor industry. And I thought it was a good read if you guys have a couple minutes take a look in this thread it cleared up some misleading thoughts I had about how convertors work. http://www.yellowbullet.com/forum/showthread.php?t=1159754 I LOVE reading stuff like this and always save the link so I can re-read it several times to let the info have time to sink in my hard head. LOL Converter stall can make or break a good combo.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: How to check for stall (converter) Schooling needed.
[Re: modelmakerinc]
#2158243
09/20/16 07:37 PM
09/20/16 07:37 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Romeo MI
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The "stall" speed is a K factor rating(math).. the "flash" is what you see at the hit of the pedal(max load/rpm)... as some said.. its hard to get a true readings.. the drop back or the high gear or on the trans brake with no chip.. I like the trans brake way.. BUT you have to have the trans brake.. the drop back method is pretty decent but you dont see the multiplier in the conv but you still see max rpm
Last edited by MR_P_BODY; 09/20/16 07:39 PM.
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