Help! 12.994 @ 115, 2.26 60'
08-01-2015, 08:04 AM
#1
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Help! 12.994 @ 115, 2.26 60' https://youtu.be/MD0-_NvJ8P0
Well guys took the car out last night and finished off some bald BFG all season tires. I tried to launch conservatively and the car spun either just before the 60' or just after. Once it hooked, I applied WOT but it simply wouldn't take WOT before then. I powershifted 1-2 and 3-4 (I think my 3rd gear is weak so you can see by the flames that I lifted for that one).
My question is, what's this car really capable of? I put the LCA relocation brackets on and when I shift it the car squirms. How can I get rid of that?
How much difference would some decent tires make?
Well guys took the car out last night and finished off some bald BFG all season tires. I tried to launch conservatively and the car spun either just before the 60' or just after. Once it hooked, I applied WOT but it simply wouldn't take WOT before then. I powershifted 1-2 and 3-4 (I think my 3rd gear is weak so you can see by the flames that I lifted for that one).
My question is, what's this car really capable of? I put the LCA relocation brackets on and when I shift it the car squirms. How can I get rid of that?
How much difference would some decent tires make?
08-02-2015, 10:38 AM
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I agree with "guppymech" you need MT et Streets bias (26 x 11.50 15). As far as the rear goes, if you do a full on rpm launch it want live. Before the cam install i raced the car and ran pretty much the same times as you, slipping the clutch and i could not get the nt555's to hook at the track or on the street. If you check my sig were pretty close on some of the mods. I launch now at 5500 and shift at 5500 ran 11.88 @ 117 last time at the track with approx. 2800 da.
Just so you will understand my car was stock rear, trans, clutch, ls1 intake and headers w/magnaflow exhaust and ran low 13's trying not to destroy the rear using the nt555's same as you front and rear. (Driving the car to the track and back) approx. 500 miles each way.
So maybe this will give you some insight as to which way you need to go with your set-up.
Just so you will understand my car was stock rear, trans, clutch, ls1 intake and headers w/magnaflow exhaust and ran low 13's trying not to destroy the rear using the nt555's same as you front and rear. (Driving the car to the track and back) approx. 500 miles each way.
So maybe this will give you some insight as to which way you need to go with your set-up.
08-02-2015, 12:59 PM
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I agree with "guppymech" you need MT et Streets bias (26 x 11.50 15). As far as the rear goes, if you do a full on rpm launch it want live. Before the cam install i raced the car and ran pretty much the same times as you, slipping the clutch and i could not get the nt555's to hook at the track or on the street. If you check my sig were pretty close on some of the mods. I launch now at 5500 and shift at 5500 ran 11.88 @ 117 last time at the track with approx. 2800 da.
Just so you will understand my car was stock rear, trans, clutch, ls1 intake and headers w/magnaflow exhaust and ran low 13's trying not to destroy the rear using the nt555's same as you front and rear. (Driving the car to the track and back) approx. 500 miles each way.
So maybe this will give you some insight as to which way you need to go with your set-up.
Just so you will understand my car was stock rear, trans, clutch, ls1 intake and headers w/magnaflow exhaust and ran low 13's trying not to destroy the rear using the nt555's same as you front and rear. (Driving the car to the track and back) approx. 500 miles each way.
So maybe this will give you some insight as to which way you need to go with your set-up.
08-03-2015, 12:28 AM
#7
Help! 12.994 @ 115, 2.26 60' That's some serious trap speed, and I've read Texas is slow, due to high DA. I think you need some Mickey Thompson drag radials. If you put slicks on the 10 bolt won't last and who wants to spend $2k on a rearend, unless you plan on racing regularly. A 2.0 or better 60' will put you deep in the 12's.
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08-03-2015, 09:27 AM
#8
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Yeah I am afraid to put slicks on it. I just built it and am having to take it back already for making noise (before I took it to the track). I know it's gotta be faster than that because I have raced low 12 cars from a rolling start and beaten them. (C7 vete for example). The 5.0 cars I race from a roll stay with me till about 80-90 MPH and then I start pulling pretty hard.
Also I do not know what DA is. Can someone explain?
Also I do not know what DA is. Can someone explain?
08-03-2015, 09:42 AM
#9
Density Altitude. Normally Aspirated engines run best at sea level, the higher up in altitude you go the less oxygen there is in the atmosphere. Same thing happens with high heat or humidity, you get reduced engine power. Dyno runs are always converted to standard day (59 degrees and 29.92 in-Hg) and you can do the same with your track times. Plug the date you ran and your times into this DA calculator to see what you would've run at standard day conditions.http://www.dragtimes.com/da-density-...calculator.php
It's nice to convert your times because it takes the uncontrollable variable of weather out the equation.
It's nice to convert your times because it takes the uncontrollable variable of weather out the equation.
Last edited by guppymech; 08-03-2015 at 10:17 AM.
08-03-2015, 10:01 AM
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Density Altitude. Normally Aspirated engines run best at sea level, the higher up in altitude you go the less oxygen there is in the atmosphere. Same thing happens with high heat or humidity, you get reduced engine power. Dyno runs are always converted to sea level and you can do the same with your track times. Plug the date you ran and your times into this DA calculator to see what you would've run at sea level.http://www.dragtimes.com/da-density-...calculator.php
It's nice to convert your times because it takes the uncontrollable variable of weather out the equation.
It's nice to convert your times because it takes the uncontrollable variable of weather out the equation.
Corrected.
10-02-2015, 05:17 PM
#12
I doubt it but its possible. Youre probably making 380whp & you'll need a damn good launch, a 1.6 60 ft to do it. If the 10 bolt can handle it, a big IF! The best 26 inch tire to get is a 26x 10x 15 ET drag, 3053s is the part#. Its actually a 26.5 inch tall tire, its definitely better than a 26x 11.5x 15 ET street bias.
10-02-2015, 06:59 PM
#13
it should go 11's if you keep chipping away at it - its cammed so I wouldn't be happy if it stays stuck in the 12's , many stock internals cars out there that have gone 11's so even in texas heat the cam should make up for the da and don't you guys get decent da in the winter down there ? your trap says it should be solid 11's hooked up , my M6 stock internals car went 11.9 on a 111 trap and my stock internals stalled a4 car went 12.1 on a 112 trap and it had some fuel delivery issues that night. 115 yes it should be capable of 11's IMO
10-03-2015, 04:41 PM
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Well it's making a little over 400 wheel. The corrected mph is 117.6. I'm hoping it's an 11 second car, as I've beaten a lot of 12.0 cars like the new stingray, albeit from a roll. Thanks for the input guys.
