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Currently my C5 has run a best of 12.65 at 111.4mph with a 2.03 60 foot. This was deep staged and with a DA of around -200 feet. If I was normal staged I probably would have run a high 12.5. My car is and auto with 3.15 gears, with a LS6 intake, Kooks headers, vararam, and dyno tuning. I want to be able to run very low 12's. It would be OK if I occasionally hit the high 11's in great air but I don't want to have to install a roll bar. In order to get to the low 12's I am going to change gears and the convertor. What would you guys recommend for gears and the stall. I was thinking of going with 3.42 gears and something like a 3500 stall.
gears with a higher stall TC should be good for .3, at least.
Sorry, I disagree. I went from a SY3500 with 3.15's to 3.73's, and it was only about a tenth difference. Once you install a high stall, gears don't make much of a difference. Only with the stock converter they make a big difference.
If you're stuck on 3.42's, go with the Yank SS3600. The SS series feels very tight. The SS4000 I have now feels about the same as my old SY3500 in terms of looseness. If you can deal with 3.73's, that would make the car feel even tighter. As long as you don't cruise at 75+, 3.73's are fine IMO.
Don't forget, you're going to need some sticky tires now.
.3? haha Install a SS3800 alone on that combo and it's good for .5-.6 depending on traction. Gears added to that would just smoke the tires all through first gear no question. If you can hook it up 3.90 gears and an SS3600-3800 is good for 1 second. BTW new rules any stock non-engine modified car can run 11.50's at NHRA tracks with no cage.
.3? haha Install a SS3800 alone on that combo and it's good for .5-.6 depending on traction. Gears added to that would just smoke the tires all through first gear no question. If you can hook it up 3.90 gears and an SS3600-3800 is good for 1 second. BTW new rules any stock non-engine modified car can run 11.50's at NHRA tracks with no cage.
11.50 for time shots only. During competition E-Town still enforces the 12.00 rule.
Sorry, I disagree. I went from a SY3500 with 3.15's to 3.73's, and it was only about a tenth difference. Once you install a high stall, gears don't make much of a difference. Only with the stock converter they make a big difference.
If you're stuck on 3.42's, go with the Yank SS3600. The SS series feels very tight. The SS4000 I have now feels about the same as my old SY3500 in terms of looseness. If you can deal with 3.73's, that would make the car feel even tighter. As long as you don't cruise at 75+, 3.73's are fine IMO.
Don't forget, you're going to need some sticky tires now.
I like the SS3600 and 3.42 combo. However I am worried that this will routinely put me in the high 11's.
What combo were you running when you ran the 11.62 with your stock motor. What was the air like? How did you run in bad air.
I like the SS3600 and 3.42 combo. However I am worried that this will routinely put me in the high 11's.
What combo were you running when you ran the 11.62 with your stock motor. What was the air like? How did you run in bad air.
Yank SS4000, Race prepped trans by Vette Doctors, 3.73's by ECS, CCW drag package, TPIS LT headers w/ Dr. Gas 3" offroad X pipe, VaraRam, Vette Doctors Tuning, NRC 5 point roll bar, removed passenger seat, ported T/B, and B&B PRT's. That's all I can remember. The air was around -1600. I ran low 12's in the summer with the same combo above but with a SY3500 converter and drag radials.
Sorry, I disagree. I went from a SY3500 with 3.15's to 3.73's, and it was only about a tenth difference. Once you install a high stall, gears don't make much of a difference. Only with the stock converter they make a big difference.
If you're stuck on 3.42's, go with the Yank SS3600. The SS series feels very tight. The SS4000 I have now feels about the same as my old SY3500 in terms of looseness. If you can deal with 3.73's, that would make the car feel even tighter. As long as you don't cruise at 75+, 3.73's are fine IMO.
Don't forget, you're going to need some sticky tires now.
Dave,
You can do it on converter alone. You will just need to choose wisely. Good luck.....Tony
I agree with Tony. Take the budget approach and install a converter only. If it doesn't get you where you want then go for lower gears.
Also the gear ratio change of 3.15 to 3.42 is an increase in torque multiplication of only 8%. Hardly worth the expense as a good torque converter will net you much more than that.
BIG CAM BABY! Thats what I would do.Id throw a cam at it and maybe some gears. With a cam you will be real close to 11's with your set up now. Gears would help though.
I ran a 12.2 @ 116 mph on Nitto street radials. At that time I was running 3.42's with a 2400 stall speed Pro-Torque converter. It can be done without a large converter so that you can keep your "streetability". A 2400 gives the car a ride similar to stock.
I ran a 12.2 @ 116 mph on Nitto street radials. At that time I was running 3.42's with a 2400 stall speed Pro-Torque converter. It can be done without a large converter so that you can keep your "streetability". A 2400 gives the car a ride similar to stock.
12.2 @ 116 is great with that setup. Its what I am running now