SST Starting Point

Lenny5160 · 11-06-2020, 02:04 PM

You'll have more MPH if you shift on RPM after you come off the stop. That's how I'd do it if I were you.

I'd probably stay wide open a bit longer, turning the stop on around 0.300 to get the car moving and allow you to be coasting on the stop through the 60' timer. I use 0.500 with my car that runs right at 6.40 in the 1/8 mile wide open.

Keith 944 · 11-06-2020, 09:42 PM

You have some good advice from some really good racers, take their advice.
My 2 cents, use it and test,test,test. every car-combo is different. it will show you what it likes. more important than mph or anything else is repeatability. there is a sweet spot for cruise rpm don't go too low....

J518 · 11-06-2020, 10:37 PM

You have a really close setup to mine. I'm 2815lbs, 4.88 rear, and closer to 700-725hp. At 1800DA in the 1/8th I ran 6.25.
So shift wise don't waste your time on shifting into high while on the stop. 2800lbs is still alot of weight and you are not going to break the tires loose in low.
I come on the stop at .375 and at topeka with 2100ft DA I had 1.95 in the stop and ran a 10.906. With that hp I think you should aim for higher dead stall rpm. I would shoot for 4600-4800rpm while on the stop.
Best of luck! Never understood why we like more complicated racing haha

StompNDump · 12-03-2020, 09:19 AM

Just wanted to say thanks to everyone for the info. I managed to go some rounds but had luck on my side also. Struggled with getting 60fts to repeat and 330. 2 passes would be close then the next would be a pick up or slow down in 60 ft or 330's. Im thinking the carb may not like the throttle stop, in the morning cool air there was a slight hesitation when coming off the stop, this later cleared out as the weather warmed up. Time to start testing more.

Regan Wilson · 12-03-2020, 05:34 PM

Where did you run? What race? Local or something else

Keith 944 · 12-03-2020, 06:39 PM

i don't know what your #s are but if they are close to or before your 60' it will change. this happens a lot with 1/8 mile because our #s are less then the 60' . example 1.60 in throttle stop duration at .01 out and sixtys are 1.90 when you change the stop it will also change 60' numbers.....

11-06-2020, 02:04 PM	#1
Lenny5160 Senior Member Join Date: Nov 2015 Location: Inver Grove Heights, MN Posts: 898 Likes: 604 Liked 431 Times in 224 Posts	Re: SST Starting Point You'll have more MPH if you shift on RPM after you come off the stop. That's how I'd do it if I were you. I'd probably stay wide open a bit longer, turning the stop on around 0.300 to get the car moving and allow you to be coasting on the stop through the 60' timer. I use 0.500 with my car that runs right at 6.40 in the 1/8 mile wide open. __________________ S/ST 51 S/C 53

11-06-2020, 09:42 PM	#2
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,193 Likes: 1,160 Liked 1,876 Times in 577 Posts	Re: SST Starting Point You have some good advice from some really good racers, take their advice. My 2 cents, use it and test,test,test. every car-combo is different. it will show you what it likes. more important than mph or anything else is repeatability. there is a sweet spot for cruise rpm don't go too low.... __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody

11-06-2020, 10:37 PM	#3
J518 Junior Member Join Date: Feb 2015 Posts: 73 Likes: 11 Liked 151 Times in 37 Posts	Re: SST Starting Point You have a really close setup to mine. I'm 2815lbs, 4.88 rear, and closer to 700-725hp. At 1800DA in the 1/8th I ran 6.25. So shift wise don't waste your time on shifting into high while on the stop. 2800lbs is still alot of weight and you are not going to break the tires loose in low. I come on the stop at .375 and at topeka with 2100ft DA I had 1.95 in the stop and ran a 10.906. With that hp I think you should aim for higher dead stall rpm. I would shoot for 4600-4800rpm while on the stop. Best of luck! Never understood why we like more complicated racing haha

12-03-2020, 09:19 AM	#4
StompNDump Junior Member Join Date: Nov 2019 Posts: 59 Likes: 0 Liked 3 Times in 3 Posts	Re: SST Starting Point Just wanted to say thanks to everyone for the info. I managed to go some rounds but had luck on my side also. Struggled with getting 60fts to repeat and 330. 2 passes would be close then the next would be a pick up or slow down in 60 ft or 330's. Im thinking the carb may not like the throttle stop, in the morning cool air there was a slight hesitation when coming off the stop, this later cleared out as the weather warmed up. Time to start testing more.

12-03-2020, 05:34 PM	#5
Regan Wilson Member Join Date: Nov 2007 Posts: 251 Likes: 158 Liked 134 Times in 70 Posts	Re: SST Starting Point Where did you run? What race? Local or something else

12-03-2020, 06:39 PM	#6
Keith 944 VIP Member Join Date: Feb 2006 Location: Dela-where? Posts: 2,193 Likes: 1,160 Liked 1,876 Times in 577 Posts	Re: SST Starting Point i don't know what your #s are but if they are close to or before your 60' it will change. this happens a lot with 1/8 mile because our #s are less then the 60' . example 1.60 in throttle stop duration at .01 out and sixtys are 1.90 when you change the stop it will also change 60' numbers..... __________________ KEITH MAYERS 2-1/2 X somebody Still many X nobody

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