121 mph in the 1/4. What should it dyno?
08-23-2010, 08:34 PM
#1
11 Second Club
Thread Starter
121 mph in the 1/4. What should it dyno? The car is 3650+ with me. It has run 121.8 in 1000' da. Any idea how much rw it might be putting down?
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08-24-2010, 05:42 AM
#8
08-24-2010, 06:12 AM
#9
What are the rest of the time slip numbers, with a 11.82 and that MPH you are spinning a lot which will increase the MPH on the big end. If you get a good 60 ft, which I am guessing you didn't on street tires, the ET will go down but the MPH will also go down.
08-24-2010, 11:38 AM
#15
my car made 430-440 rwhp (depending on the pull) on a dynojet and went 124-125 mph in 80 degree air (cool for FL). its a TH400 with tight nitrous converter @ 3600 lbs
you guys talking about 475 rwhp and 121 mph - what in the world are you doing? lol
you guys talking about 475 rwhp and 121 mph - what in the world are you doing? lol
08-24-2010, 11:59 AM
#16
Depends on the dyno, the DA, and the driving. I've seen an M6 fbody trap 121 in about the best weather you're gonna get and dyno 408 rwhp on a Dynojet. There's also the other end of the spectrum, with 500 rwhp cars that can't get out of the high teens for various reasons.
With the average numbers out there, I'm with all these guys, that it's probably 425-440ish on a Dynojet.
Just from my experience, without changing anything else (tires, gear ratio, etc.) I have never trapped higher due to less traction. I haven't seen anyone else do this either. Usually it happens when someone throws a bias ply slick on there with low air pressure, vs a radial with higher pressure, or puts a taller tire on, which aids traction, but changes the gear ratio.
Make a clean pass and then make a second pass without changing anything, but blow the tires off on purpose and I do not believe that the mph will go up. Never has for me.
I could definitely be wrong about this, but haven't seen it to be true so far
With the average numbers out there, I'm with all these guys, that it's probably 425-440ish on a Dynojet.
Just from my experience, without changing anything else (tires, gear ratio, etc.) I have never trapped higher due to less traction. I haven't seen anyone else do this either. Usually it happens when someone throws a bias ply slick on there with low air pressure, vs a radial with higher pressure, or puts a taller tire on, which aids traction, but changes the gear ratio.
Make a clean pass and then make a second pass without changing anything, but blow the tires off on purpose and I do not believe that the mph will go up. Never has for me.
I could definitely be wrong about this, but haven't seen it to be true so far
08-24-2010, 03:15 PM
#19
I trapped 123 with 405rw in a Vette. It weighed 3360 with me in it. So I am going to go with 425-435rw. I also argee that the spinning equals MPH is a bunch of junk. It has never happend to me or any one I know. If you can't go WOT from hit to quit you will not trap higher. The only concession I will make is if you bog really bad due to lack of power and allot of traction. Then a hair of spin may keep you in your power band and increase trap speed.