trex600450

Gentlemen,

The time has come. I'm ready to upgrade to a higher rpm TC. The car is an 00 A4 TA, with no mods other than a Volant and flow master cat back, both which the car came with. The car will be a DD.

Of the three indicated, it appears the SS3600 is the most recommended, at least on this forum.

I've read some use the ss3600 with a lower STR, such as 2.2 instead of 2.5.

Any advice on what TC rpm stall and what STR number will be appreciated.

It should be noted that a Yank rep. recommended a 2600 TC rpm for an OEM LS1 TA car.

neblackshirts

I have a Yank 3600 in my 01 Camaro and like it as I feel it has good street manners. But it's also in a level 5 4l60e from Finish Line Transmissions with a 12-bolt 3.73. I've had guys that work/own transmission shops ride/drive the car and seriously came away impressed with the Yank converters manners versus others.


Now someone correct me if I'm wrong, but the power that is being put to the converter can have effects on the actual stall. So a 3600 from Yank might not flash/stall in a 350rwhp as high or the same as say in a 480rwhp car. Might be why Yank rep recommended the 2600 as to you don't have the other modifications to support it, your just not going to benefit from a 3600.

RPM WS6

iTrader: (3)

You don't need any other modifications to benefit from a 3600 stall speed on an LS1. Just having a stock LS1 engine is enough. Ideal stall speed, from a performance-only perspective, is likely closer to a 3800-4200, even for a stock engine, but something in the 3500 range is a good blend of street manners and WOT performance.

2600rpm is a waste. If you plan to never use a tire that's better than a typical Z-rated street tire then 3200 might make sense to aid traction, but you'd still be giving up the slightly better shift extension of the 3600. So a lower STR 3600 (as suggested above) would be a great compromise there.

conexion914

iTrader: (5)

What gear is in the car?

I'm not sure if you're doing the labor, or not, BUT I've had to replace converters on the ground and it's not something I'd want to have to repeat because I didn't go big enough in the first place.

I've had street cars with stalls as high as 4200 that I daily drove and didn't have a problem. The 4L60E is a lockup transmission. Once the car is at cruising speed the computer commands lockup and no more slip occurs and it will drive just like your current converter assuming both are locked.

The car will still want to roll forward when you let off the brake pedal, and you can get it moving with light throttle as normal. The difference you'll notice is when you give it more throttle and you should smile from ear to ear.

If you have a taller gear, 2.73 for instance versus a 3.23, a looser converter will act looser. If you ever plan to change the gear ratios in the rear to something numerically higher than 3.23, then I'd go with the higher stalled converter and never look back.

I hope some of this helps and aids in your decision.

trex600450

Thank you to all that have replied so far. From what I know, the rear gears are 323.

In regards to the ss3600 TC, would it be better to have a 2.5 STR, or lower, such as 2.2 STR ?.. I read somewhere , that someone uses a 3600 or 3800 with a 2.2 STR.


As far as tires, I am planning on using 315/35/17 on the rear. What tires would you recommend, such as Toyo, Nitto 555, etc ?

RPM WS6

iTrader: (3)

I wish that Yank still made a ~3500 stall speed with an even lower STR. Many years ago they produced the SuperYank series, in 3500 and 4000 stall speeds with a 1.6 and 1.8 STR, respectively. I loved those for street use - traction was really quite decent even on normal 275mm street tires with proper launch technique, and 60-foots could still dip into the 1.6x second range on DRs at the track with a stock engine. You wouldn't break any ET records with these low STR units but street traction, high end efficiency and trap speed were excellent - plus all the shift extension of any other 3500+ stall speed. These were my favorite converters for a street car. I don't think anyone has an off-the-shelf unit comparable to these currently.

With a 3.23 gear, I would not be hesitant of any high quality unit in the 4k-rpm-or-less range in terms of street manners. Traction is really the bigger concern.

trex600450

ok. so a ss3600 with a 2.2 STR with 315 Nitto 555's ?

mrvedit

Yes that sounds like a good combo. I ran the SS3600 with 285 Nitto for several years.
Higher STR tend to have a very narrow torque multiplication range while a lower STR has a wider range and therefore feels tighter on the street.

sxc Z28

Yes. I have the same stall and tires but in 275s. If you ever add more power you will need a radial but for what you're doing you'll enjoy it.

Z28SteveA4

iTrader: (16)

I have had a yanks ss3600 2.5 in my car for years. It's a great converter does very well on the street but does not get traction at all on a street tire even a radial it spins. Honestly I was worried about going higher then a 3600 but I've driven a lot of these cars with stalls in them and I love the yanks ss4000. I wish I would have went with that converter over the 3600

trex600450

Ok, I'm confused. Its a great converter but I wont have traction ?

Based on that, then the ss3600 is too high ?....but you should have went higher, to a ss4000 ?

sxc Z28

Get the 3600. The end.

RPM WS6

iTrader: (3)

We've been over this before in your previous threads about this.

Traction comes and goes based on tire selection and launch technique, but shift extension is forever.

No higher stall converter is going to get full traction on any street tire if you just mash the pedal and shock the tires from a dead stop. Launch technique matters. But once you're moving, there's no denying the benefits of improved shift extension. If you're still confused, you can re-read the many posts made about this in your other related threads.

trex600450

Ok, so you recommend an ss3600 ?

JakeFusion

iTrader: (7)

SS3600 isn't very efficient up top.

I'd do something else.

CircleD 4C perhaps. Or anything from PTC.

FirstYrLS1Z

iTrader: (4)

As RPM WS6 stated in post #13
'We've been over this before in your previous threads about this.'

The OP has had 8 threads on the topic starting a year ago.
#1 6-5-2016
#2 6-6-2016
#3 8-24-2016
#4 8-27-2016
#5 3-13-2017
#6 3-20-2017
#7 6-11-2017
#8 6-11-2017

How long and how many post answers does it take to convince someone ?

StealthFormula

iTrader: (35)

As I stated in your other thread, you really need to find someone local to you with at least one of these converters and go for a ride/drive the car to see what you think. You can make as many threads about it as you want but at the end of the day this is a personal decision and since the car is your DD it's pretty critical that you end up with the right converter for YOU in the end. Also, keep in mind the focus of this forum is on performance and I think some people over recommend things that apply to daily driver cars that are not raced (i.e. converters, cams, etc.). I have personal experience with all three of the converters you are asking about and trust me the driving experience between all three is noticeably different. All three are great converters but for different reasons. There's no better way to make an informed decision then to experience these converters you are considering first hand. You could use the regional section of the forum that applies to your location and make a thread seeing if any local to you members may be able to take you for a ride.

FirstYrLS1Z

iTrader: (4)

^^^ test ride if possible. I did that 7 weeks ago for someone local to me. 'His shop' was advising to go 2400,others have told him 3600 is too much. After the ride he agreed my SS3600/3.23s' wasn't bad at all in city traffic. His followup post said he'd be contacting CircleD.

trex600450

Thank you SIR !

Is the circle D 3600 TC better than the Yank SS3600 TC, in any way ?

cals400ex

iTrader: (27)

Do you know of any data that I could check out that shows the circle d or PTC working better than the ss3600 on the ls1 f-bodies?