Street Racing & Kill Stories Basic Technical Questions & Advice

lucille vs pray tune 6th gen

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Old 09-19-2018, 07:47 PM
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Originally Posted by Pray
Not at all what I was ever saying. I was just saying he doesn't reach the end mph first. Car in front does if he maintains his acceleration.
I don't think this is valid all the time. Whichever car is pulling away or reeling someone in is going at the faster speed. So car A has a strong low/mid range & pulls away at the beginning. Then car B is faster on top end & starts to reel car A in. As pulling on car it is going faster mph. It will reach said speed first. If going any faster than other car. If only going by speed, distance has no merit. It's time. But that's not how street races go. The car may not even be in front but if going any faster it will reach a said speed first. But that definitely doesn't tell the whole story. Lol.
Old 09-19-2018, 08:04 PM
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Originally Posted by UltraZLS1
I was back halfing 26-27 mph last time out in positive da. 99-100 1/8 mile and 126-127 1/4

You really think 125-126 on a 28 tall tire and ported stock manifold? My car was never capable of that. But we never totally sorted the tune either on that setup. It was a 123-124 car at best on that same wheel and tire package and same mods. I suppose 124-125 could happen in ridiculous da or something
Before I went to the converter I trapped 125 at 3,840lbs on 28's with my ported stock stuff. I know it was positive DA since I went 10.90's the next week in +2,100 DA with the 4C with no other changes. So with Drew's car being one of the strongest A8 cars I have seen and stripped as a 1SS I could easily see those mph's in -DA.

I rarely see over 24 mph on the back half with any of my cars. Even my cam cars barely do 27mph or so on the back half.
Old 09-19-2018, 08:06 PM
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Originally Posted by BlkMach1



i disagree with those estimates. But then again I don’t math base MIR standards at -1500 DA. I’m basing myself on what I’m seeing and what I’ve ran.
Reduce the mph to what ever you want. But the split is the same. My FBO 1SS cars have trapped 122+ in +3,800 DA on multiple occasions.
Old 09-19-2018, 08:07 PM
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Originally Posted by Pray
Right. That is static speed vs acceleration. Maybe this will make sense. If the car in front is already at 115 and accelerating at a steady pace gaining mph, you are at 100 mph when you start to gain back. If you don't catch that car before he hits the end mph you are not going the same mph as that guy. You have to cover the 15mph deficit first and then start to add mph to be going faster. So the rear car is definitely accelerating faster now shooting for the same end mph. But since he started so much lower, his actual mph is not the same when the guy in front hits it. It seems everyone is confusing speed/mph with acceleration.

Or another way. Two cars run 10.5@130 in the 1/4. Car one goes 6.90@105 and car 2 goes 7.20@102 in the 1/8. Car two obviously has a better acceleration on the back half but they both get there at the same time and mph. But since he was behind at the 1/8 he had to cover the lost mph first. That is all we are seeing here but in a highway roll.
If the car in front is 115mph. The other car will not stop the pull, or start pulling back, until it reaches the same speed. At the same time. When neither car is pulling on the other. Which ever car is going faster, while it's going faster, will be at a higher mph. Therefore reaching higher numbers first. Even if it's behind. Speed & acceleration are two different things.

I was also going to post some track times. Say a car runs 9.9 @134mph. Another car runs 10.0 @153mph. Clearly the 9.9 car covered the distance faster. Clearly the 10.0 car was going way faster, after a certain point, & hit 134mph way before the 9.9 car. Two totally different cars doing different things. Lol.
Old 09-19-2018, 08:08 PM
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Originally Posted by SoFla01SSLookinstok
I don't think this is valid all the time. Whichever car is pulling away or reeling someone in is going at the faster speed. So car A has a strong low/mid range & pulls away at the beginning. Then car B is faster on top end & starts to reel car A in. As pulling on car it is going faster mph. It will reach said speed first. If going any faster than other car. If only going by speed, distance has no merit. It's time. But that's not how street races go. The car may not even be in front but if going any faster it will reach a said speed first. But that definitely doesn't tell the whole story. Lol.
So how do we account for the mph that the "faster" car is already down and has to make up? Do we just forget about it and assume that it is now traveling at the same speed as the car in front of it? The car that got out down low is going faster to begin with.
Old 09-19-2018, 08:11 PM
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Let me be clear because ya’ll hyping Swapped’s car big time. Leo is NOT a 130mph. He’s ran a couple people who have track times and none are by distances that a 12mph trap advantage would give you. Henry...recently 117.xx, Buster 118-119, Soflo 122. It seemed like Soflo had a slight advantage from on top end. Granted he wasn’t exactly in the trim he was when he ran Drew but 70lbs and maybe 10whp isn’t going to give you 8mph at the track.
Old 09-19-2018, 08:12 PM
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Originally Posted by SoFla01SSLookinstok
If the car in front is 115mph. The other car will not stop the pull, or start pulling back, until it reaches the same speed. At the same time. When neither car is pulling on the other. Which ever car is going faster, while it's going faster, will be at a higher mph. Therefore reaching higher numbers first. Even if it's behind. Speed & acceleration are two different things.

I was also going to post some track times. Say a car runs 9.9 @134mph. Another car runs 10.0 @153mph. Clearly the 9.9 car covered the distance faster. Clearly the 10.0 car was going way faster, after a certain point, & hit 134mph way before the 9.9 car. Two totally different cars doing different things. Lol.
As I stated earlier. Give both those cars the same traction on the starting line and the theory goes out the window. The roll racing with no traction issues defeats the two cars with wildly different mph's at the track theory. With even traction the 153 mph car will run 8's and would be out the entire way on the 134mph car.
Old 09-19-2018, 08:19 PM
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Originally Posted by BlkMach1
Let me be clear because ya’ll hyping Swapped’s car big time. Leo is NOT a 130mph. He’s ran a couple people who have track times and none are by distances that a 12mph trap advantage would give you. Henry...recently 117.xx, Buster 118-119, Soflo 122. It seemed like Soflo had a slight advantage from on top end. Granted he wasn’t exactly in the trim he was when he ran Drew but 70lbs and maybe 10whp isn’t going to give you 8mph at the track.
I am going to have to send some of my guys down there then. My M6 2SS cars up here run 123 in bad weather on a tire.

I am basing my A10 5.0 times off what I see around here. My good friend and shop owner I work with a lot is a big dog in the Mustang game. His 18' ran 10's at 127 or 128 with way less mods than Leo's car. I know he has been faster since but haven't cared to check how much faster. The weather hasn't been good here for quite a while either so his times are not unicorn. I think he actually has a 3.15 gear as well and didn't buy the "track pack" version.

What track do you all go to? The DA can't be that bad since you all are under sea level.
Old 09-19-2018, 08:23 PM
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Yea, ok. Please send those 3800lb/480whp cars down here to run mid 10s at 130.

Old 09-19-2018, 08:27 PM
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Originally Posted by BlkMach1
Yea, ok. Please send those 3800lb/480whp cars down here to run mid 10s at 130.

I have all the slips documented to back up what my car and all of my customers cars have run. My stuff is well documented on Camaro6 and my page. Not to mention it has been done in very public places like Camaro Fest two years in a row. If you were questioning my stuff.

I can get the 5.0's slips as well. If you are questioning his.
Old 09-19-2018, 08:33 PM
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My statement is specific and still valid.
Old 09-19-2018, 08:38 PM
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Originally Posted by Pray
So how do we account for the mph that the "faster" car is already down and has to make up? Do we just forget about it and assume that it is now traveling at the same speed as the car in front of it? The car that got out down low is going faster to begin with.
No of coarse not. If a car pulls out on another it is going faster no matter where he is. If wherever he is the pull stops the cars are going at equal speed now. The car in front still covered more distance in less time, accelerate, to get out front. So still has it's lead in distance. If the other car is pulling on front car. The front car is going slower & getting caught by a faster moving vehicle. Doesn't mean it will end in front, or win race, or stay like that. But it could.

Originally Posted by Pray
As I stated earlier. Give both those cars the same traction on the starting line and the theory goes out the window. The roll racing with no traction issues defeats the two cars with wildly different mph's at the track theory. With even traction the 153 mph car will run 8's and would be out the entire way on the 134mph car.
Well, it's more than just traction. Different cars, setups, trannys, gears, weights, power, etc. Different cars may have different strong spots. It's all good.

Old 09-19-2018, 08:46 PM
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I wanna see Pray get an NA A8 sis gen to not hit the 5th gear wall.
Old 09-19-2018, 08:53 PM
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They do fall off a bit in 5th. But you also have to give the mustang some credit. It’s strong up there. Just like the Camaro is super strong 0-120
Old 09-19-2018, 08:56 PM
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Originally Posted by Pray
Hey Leo, what is the height or your rear tire, or the average tire height of what the A10 5.0 guys are running? And what is your shift mph? I am trying to do some math. Thanks.
i run for races a 27 inch tire and optimal shift points are at 7600 rpm , and tbh i have no animosity against you or your abilities as a tuner just things were blown out of proportions and some comments were too quick to appear before the whole race was even posted at the end this is just for fun , no disrespect was intended towards you . people's opinion and my opinion of the race might not be the same as you or other members here

Last edited by swapped3vgt; 09-19-2018 at 09:04 PM.
Old 09-19-2018, 09:04 PM
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Originally Posted by UltraZLS1
They do fall off a bit in 5th. But you also have to give the mustang some credit. It’s strong up there. Just like the Camaro is super strong 0-120
0-120 would be ok in the 1/8
Old 09-19-2018, 09:05 PM
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Originally Posted by islander033
0-120 would be ok in the 1/8
some gears would be ok too
Old 09-19-2018, 09:13 PM
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Originally Posted by UltraZLS1


some gears would be ok too
Maybe A10 will save the LT1?

My 3 speed does ok some times....weird the LT1 is screaming for 10 speeds.
Old 09-19-2018, 09:18 PM
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Originally Posted by islander033
Maybe A10 will save the LT1?

My 3 speed does ok some times....weird the LT1 is screaming for 10 speeds.
not really sure it needs saving. I’m sure it will help maybe a tenth in the 1/4. Probably help a little more in high speed rolls. Really wish I could try my car against some of these guys

Its about 5 years old now still doing ok. Something else coming soon I’m sure
Old 09-20-2018, 12:35 AM
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Originally Posted by islander033
Maybe A10 will save the LT1?

My 3 speed does ok some times....weird the LT1 is screaming for 10 speeds.
Idc if the a10 in the new camaro is half a second faster in the quarter that car is HIDEOUS, I wouldn't trade up to it, il just mod the zl1 instead lol



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