So lets see the results and your experience when trying both ways. What works best and why do you think that is?

 

Your convertor will flash regardless of how you do it, just depends on how much you want ro "run up" on the flash point. Results will vary per application also. Mine when I foot brake at "stall it" in the 3000rpm range is a touch quicker in the 60's than if i leave it at a dead idle, but at the end of the track the car still ran the same number. When I'm on the transbrake the higher the staging rpm the harder the hit since Im that much closer to my peak torque, so 60's are typically better than footbraking but once again, at the end of the track when Tbraking at 3000rpm or 5000rpm ET is the same but mph will vary as does 60's.

Some cars like leaving at an idle and hitting the convertor hard for the best 60's, other cars dont. just comes down to trial and play time with yours and seeing what works

 

Mine likes leaving at 1800-2000 range. I have a 4200 in mine.
The real difference in converters are up high and down the track, it's how effecient they are. I have ran converters that 60' really good but did not MPH/ET that well and I had converters that 60' marginal and ran really good ET/MPH. Just need to decide which one you want. Once you find the sweet you will know.

 

I flash mine off idle and its dead consistent at 1.55 everytime I launch...I may experiment with leaving with a little rpm behind it next year, but I'll have 4.10s by then also so we'll see...Its seems like my car likes to leave while the suspension is at full rest, when I loaded it up last year it was inconsistent and blew the tires away half the time...

--Alan

 

I have the Vigilante 3200 and I've experimented with this quite a bit (foot brake car). My combination with the 396 stroker likes to be “flashed” and that is the “only” way to get good 60ft times (1.60s). When I attempt to stall it up with higher launch RPM, is slows down every time. Basically for the correct launch I have it at about 1150 RPM during the final stage, then release the brake and go WOT and let it flash-up.

Next year I’m going to 4.30 gears and 28” slicks (currently have 3.73s w/ small 26”) and hope to have 1.50, 60fts. I may also move up to a Vig 3600 to help the launch.

WD

 

So far I've used nothing but the transbrake at 5000rpm. Trying to be consistant racing, it could be quicker off the footbrake for all I know right now. I'll be footbraking it slightly when the nitrous starts flowing. Probably 3000rpm and then WOT with the kit armed.

 

My combo cuts better 60's w/the suspension at rest...I give it just enough throttle to get the car off idle..~1000rpm...then mat the gas. convertor flashes to ~3500 NA and ~3800 on the jug

 

My converter stalls at 6000 and I launch at 4500 off the transbrake. Launching higher than that doesn't improve my 60' times. Maybe it will for the 2007 season with the bigger tires.

 

Thank you gentlemen. Ray, whos converter and what stall are you running? So Ken, what make and stall rating did you finally wind up with? I know stalls are relevant to HP, weight, suspension, etc, I'm just trying to get a feeling for what has worked for most. I do believe my best 60ft. so far (1.75) was when I stalled it up less than max, max being about 1900 with my Vig. 2800. So it looks like slightly off idle is the way to go.

 

Now that I think about it, having the suspension "at rest" on my car may also improve my launches. When I attempt to "stall it up" real hard, the body lifts (front and rear) under the drive-train load. And, that may be hurting my weight transfer and causing me to break-loose during the launch.

I have been running 3.73s w/ small 26” ET streets and have 1.60, 60fts. However, next season I’m going to 4.30s w/ 28” slicks and hope to have my 60fts down to 1.50. I also need to keep the suspension loading issue on the table next season during my launches to see if that helps (launching at rest).

WD

 

It's a Viginlante 4200, Had Yank 3500 and a Vigilante 4800 in it. The car shifts about 6900. I cut in the low 1.5's to high 1.4's with it. I'm also running a Pete-Z style setup for the suspension as well.

http://members.***.net/ken95z28/Proj...Suspension.htm

 

So Ken, is the Pete-Z set-up the one that eleminates the torque arm? I'm happy with my Spohn TA, but I'd like your thoughts on the Pete-Z set-up if you don't mind.

 

i still have the stock stall.... and i like to foot brake it to about 1500rpms

 

I am running an Art Carr 10" billet stall.....the reason alot of car 60' better is if you load the car up on the convertor, the weight is over the front wheels. When you launch, depending on how fast your suspension can transfer the weight over the rear, the tires will break loose before there is enough weight to keep them planted.
Here is 2 vid's
first is NA w/a 1.5 60'
View Video on FQuick
this is on a 150 shot and a 1.4 60'
View Video on FQuick

 

sweet runs dave