My new motor is complete and is more than capable of a 9 second pass, but this is a street car, and I will not compromise on the drivability by going with a shorter gear or a looser coverter. I currently have 3.42's and a stock converter which is being swapped out for 3.73 gears and a 2800 stall Vigilante converter. I also have a custom torque arm and new lower control arms. Edit: I have only removed about a 150 pounds.

So my question is how low of a 60 foot time will I need to break the 9 second barrier, and will my new gears and stall be aggressive enough to make that possible?

 

You will need to be in the high 1.2 to low to mid 1.3 range to run 9's. Good luck.

Coach

 

id think it depends what kinda power you have up top..if you can trap 145+ then you can have a softer 60'

 

I was running 9.9x @ 135 with a 1.40-1.39 60 foots.

1.25-1.27 60's now is good for very low 9s @ 147 or so.

Depending on what car weighs but with an NA engine a 2800 isnt going to be enough. I use a 5000 converter and a 3.70 w/28" tires. If you drove this car you would never think it has this loose of a converter, matter of fact it 'feels' tighter driving around then my old vig2800 years ago..

Only one way to find out for sure though - good luck with it

 

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Agree ^^ more around 1.40-1.45 depending on weight & HP.
A motor with enough HP for 9's don't usually like less than 5000 ish stall.
At least none I've had or helped with ran good. As said, only 1 way to know.

High 1.20's put my slow car in the 8's.

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It makes sense that I could have a softer 60 foot and still make the 9 second mark if I had enough horsepower. My motor is completed but not yet installed, so I can only offer an educated guess to its performance numbers. My new motor is a solid roller stroker (388c.i.) LT4 with a TNT F-2 nitrous kit. I have been told by many that it should make over 450 to the tire naturally aspirated. I can go as high as 250 hp on the nitrous jetting I currently have, although I hope I don't have to go that high. The biggest jets I have used so far is the 150 shot. I have been told the motor can handle up to a 300 shot of nitrous if it done with a progressive, but for piece of mind I would rather limit the nitrous to a 250 shot or less and use a progressive as well to lessen the stress.

Anyone have a guess on trap numbers with this amount of power? Keep in mind that about two hundred pounds has been removed so far.

 

So with a 2800 stall and 3.73's with 26 inch tall tires, do I have enough power to pull it off?

 

In theory that makes complete sense. A top fuel dragster could run a 4 second 60 foot and likely pull off a 9 second time. I have no idea what my motor on a 250 shot on nitrous would trap with my current weight reduction...135, 140, 145?

 

Big difference between 5000 and 700hp though. Whats more impressive is when a top fuel car shuts off at 150' out and still runs a 7-8 second ET, at like 50mph

Getting in the 9s with a crappy 60' (say 1.6x) takes a shitload of power, most of the ET is made in the first 200' or so. Best thing to do is look through the timeslip database and you will see pretty similar 60 foots/mph. Then go check out some import sites and look for the 9.90 @ 160mph timeslips and look at the 60 foots.

But hitting it with a 250 shot of nitrous changes everything lol. if you can hook it (good luck on 26" tires unless you have some very well prpped tracks around) nines shouldnt be a problem at all..

 

good luck, 2800 stall wont do it

 

It would interesting to see what such 60 foot times would look like on a 9.9 pass at 160 mph. Not sure how much it would help me though considering a 300 shot on my car would not touch 150 mph. I suppose on a 250 shot it may be possible to pull it off with a high 1.3 or a low 1.4? We'll have to wait and see.

 

While that seems to be the case, I'm not absolutely convinced that it's not possible. Then again, I recently read about an LT1 running 9.90's with a 5000+ stall. Oh well, the 10 second club is very respectable for a street car; I shouldn't have a problem getting there with my set up.

 

mine had a 1.429 60 ft. on my 9.91 pass.

 

Running 602RWHP on LT1 with a soft 200RWHP hit. Car was 3,6xxLbs. Last time out the car had the best 60ft ever at 1.45 pulling down a 330 a tenth harder then it did on the 10.0 pass's.

In my car it will take a 1.40-1.45 to get it done. This is spinning to a hook just past the tree and trapping over 136.