Shifting heavy S/St car on Stop.....

sst7250 · 09-02-2011, 01:33 AM

Quote:

Originally Posted by sst7250

My 2895lb car we shift at .50, on the stop at .000 off at somewhere around 4.6-4.7. I also agree getting the car into high gear as soon as you can is key.

really?

Jeff saw you out there last weekend. That had to be brutal between the heat and sitting around that much. I think I'll pass for sure on that one. We were thinkoing of racing out there this weekend but I think I'll pass again. I did run the PSCA B1 deal in July, managed to win that deal but everyone gets lucky.

As for the stop, yep that is the dealio. I have not run the car at 10.90 in the heat yet. This 5000'+ DA stuff is for the birds. IIRC in July we saw 5800', just dumb. I put one of those fancy disc stops on and need to get out and see how that goes. But we both know I have no idea what I'm doing

Oh yeah having a non climate controlled shop out here is also for the birds....

CBS jr · 09-02-2011, 12:17 PM

I went outside and got a couple of nuts for you out of the bolt ben.
It wasn't that hot. What moparts can't run in the heat or 5000 plus feet.

sst7250 · 09-02-2011, 06:37 PM

We were racing too

I did not see a reason to go out and get any data at 5000' + of air. Cant see it as real useful but maybe I am wrong. We both know I have no clue what I'm doing anyway.

85transam · 09-21-2011, 09:17 AM

Trying to figure out running a throttle stop and have a couple questions hopefully you guys can answer. We have a heavy car (3500) that will run 10.30s. From what I have read I figure we should have the stop on very early ( .3-.5?). My main question comes from the fact that we have a three speed tranny. When is it best to shift into second gear, and I assume we should do both shifts on time? Thanks for all the help in advance.

gnicholson · 10-02-2011, 09:32 PM

not many guys throttle stop race with a 3 speed . that doesnt mean it cant be done.you should be able to shift into 2nd quicker than if it had a glide because you still have some gear multiplication. i would try .5 on the 1st shift and start with the 3rd shift right before the stop comes off say 1.5. this is just a guess on my part and you will have to experiment with timer settings as well as stop rpm adjustments

RacingRicki · 11-10-2011, 09:35 PM

i think you will have a hard time running the number shifting on time with that setup. you will probably have to set your rpm really high.

09-02-2011, 12:17 PM	#2
CBS jr Member Join Date: Jan 2005 Location: who cares Posts: 176 Likes: 0 Liked 0 Times in 0 Posts	Re: Shifting heavy S/St car on Stop..... I went outside and got a couple of nuts for you out of the bolt ben. It wasn't that hot. What moparts can't run in the heat or 5000 plus feet.

09-02-2011, 06:37 PM	#3
sst7250 Member Join Date: Jan 2009 Location: Las Vegas, NV Posts: 184 Likes: 9 Liked 45 Times in 32 Posts	Re: Shifting heavy S/St car on Stop..... We were racing too I did not see a reason to go out and get any data at 5000' + of air. Cant see it as real useful but maybe I am wrong. We both know I have no clue what I'm doing anyway.

09-21-2011, 09:17 AM	#4
85transam Junior Member Join Date: Sep 2010 Posts: 4 Likes: 0 Liked 0 Times in 0 Posts	Re: Shifting heavy S/St car on Stop..... Trying to figure out running a throttle stop and have a couple questions hopefully you guys can answer. We have a heavy car (3500) that will run 10.30s. From what I have read I figure we should have the stop on very early ( .3-.5?). My main question comes from the fact that we have a three speed tranny. When is it best to shift into second gear, and I assume we should do both shifts on time? Thanks for all the help in advance.

10-02-2011, 09:32 PM	#5
gnicholson Member Join Date: Sep 2011 Posts: 103 Likes: 15 Liked 4 Times in 3 Posts	Re: Shifting heavy S/St car on Stop..... not many guys throttle stop race with a 3 speed . that doesnt mean it cant be done.you should be able to shift into 2nd quicker than if it had a glide because you still have some gear multiplication. i would try .5 on the 1st shift and start with the 3rd shift right before the stop comes off say 1.5. this is just a guess on my part and you will have to experiment with timer settings as well as stop rpm adjustments

11-10-2011, 09:35 PM	#6
RacingRicki Sponsor Join Date: Sep 2005 Location: Colorado Posts: 106 Likes: 0 Liked 0 Times in 0 Posts	Re: Shifting heavy S/St car on Stop..... i think you will have a hard time running the number shifting on time with that setup. you will probably have to set your rpm really high.