..... How to determine an optimum RPM setting for Trans Brake launch ... 3600# ... 5000rpm stall ... 4.86 gear ... 28 x 11.50 bias ... 1.44 60' ... 6.70's in 1/8th .....
On good tracks we set at 3400 on our 6k converter. Track gets hot we up the rpm. Seems to help us in that scenario by not hitting the tire so hard. 2900lb ladder bar car 1.24-.26 60ft on 10.5 slick..
I like getting a run at the converter.
You also don't want to go too low and make the engine unhappy.
I have absolutely no clue about a car that slow, but I would bet 4000 would be a decent place to start.
Should be high enough to leave crisp, and still give a nice run at the converter??
Good luck, race safe.
I'm curious where that philosophy comes from? Our car had a 245/275 with 645 HP.(Superstocker) Stall was well over 6000. I'm not going to say it on here as I will get phone calls bitchin me out if I do. But using your formula I would have been chipped at at LEAST 5500. With a 5.57 gear and a 2.63 first gear....I would have flipped completely over on my back ! LOLTake out the chip from tb slot, push the button and mash the throttle, see where the rpm stops. Dont hold it there too long, just few seconds to observe the rpm.
Then 500 rpm below true stall speed is a good starting point. On a poor track move closer to stall speed as it hits the tire softer.
Just pissin with ya ...Hey wanger It's not a philosophy just tried and true method with many SST, SG, and SC cars. Your setup for sure is way too extreme to utilize that formula lol
but we have found that to work on bracket combos. Some guys leave 1000rpm below but my own ride I get tire shake, lacking power there.