I've got everything I need performance wise I want on my ls1. I'm just stuck on what stall/converter to buy.

mods
TSP 2.5 5.3 Heads milled to 63cc
fast 92 intake/ PTM 92 TB
Magic Stick 3 MS3 Cam Camshaft 237/242 .603/.609 111
fast fuel rails & fuel line
SLP lid
Melling HP oil pump
42lb injectors

ANY info would be appreciated.

thank you

 

I would look at the Yank PT 4000 or maybe even the PT 4400.
How high you going to be spinning it ?

 

I havnt gotten it tuned yet but I was told around 7000 would be best.

would a yank 4000SS be a better choice just in case I spray in the future?

 

After doing a bit of Internet research I'm thinking the yank 3600ss might be a better option.
Opinions?

 

I have the ss4000 in my s10 and love it. Drives easily (granted in a 2900lb truck)

 

What mods do you have?

 

It's in my signature.

 

I would call yank but yes people spray with the SS series converter. How big of a shot ?
With the PT series nitrous really is not a option unless it's on the smaller size and other variables. But yes the SS series handles nitrous much better than the PT series.

 

I'm on a droid. It doesn't show a signature. If you could copy and paste that would be great thanks

 

100-150 shot.

why would anyone go with the PT series over the SS series? If they are the same thing but the SS can handle nitrous why not get it?

 

The PT series is a looser converter for N/A cars. It has higher shift extensions.

When I talked to Dave at yank he said the SS 4000 will 60' better but the PT 4000 will trap higher due to it's higher shift extensions.

I do plan on spraying a bit eventually but will probably only be able to do 100 shot with my 6800 shift points, my shift extensions are at 6100 rpms.

Where as with a SS 3600 many people spray a 150 with stock shift points and some get away with 150 shot on the SS 4000 with stock shift points and some blow threw the converter.

With stock shift points and a PT 4000 it is just to loose for a 150 shot and will push the converter right off the rev limiter.

Now again, I would call Dave at yank but I would imagine you would be more than fine spraying a 150 shot with the SS 4000 with you spinning it to 7000.

 

SS is an inefficient converter. 15-18% slip uptop (83-85% efficiency). I'd look at the PAS series if you want to spray. They are more efficient uptop (93-95%) and tight for regular driving. The 3800 would work. Same cost as the SS.

Another option would be the CircleD 4C Triple Disk. It's a 3600-3800 stall... and with the triple disk you can lock it WOT in third on the spray. You'll be faster doing that. Otherwise you need to spray out of the hole. But that's one reason the 3400-3600 stall triple disks are used for the turbo and sc guys. They can build boost with the stall and then lock it to gain 100-120HP uptop (100% efficient).

Or I'd call PTC. They'll build you something custom that'll work better than anything else. FTI is in that boat too. And they have a triple disk setup as well.

If you want NA performance, you need a loose stall that has a lot of shift extension. CircleD 3E or PT4400 so you're only dropping 800 RPM or so on the shift and are 95% efficient. But they are loose driving around. Say 3k+ to stay up with traffic with 10% throttle. Going to an SS3600 or 4C would be 500-800 better in traffic, but slower at the track NA. Nitrous will go right through E or PT and push them to 6000+ stall.

So to recap in order of price (least to most):

PAS3800
PTC Custom
FTI Custom
CircleD 4C Triple Disk

 

Thanks for posting this, this is useful information that is going to steer the direction I go with my next converter. The efficiency figures you posted of the Yank converters do not surprise me. My SS converter could not hold a candlestick to my PT converter at WOT, the PT is in a whole other league in that regard. I spoke with Yank, asked them what would bridge the gap between the SS series and the PT series and that I was specifically looking for a converter with street manners similar to my old SS3600 and the top-end similar to my current PT4000 (basically wanting a more efficient SS converter/tighter PT converter) and they recommend their PAS3800. I was planning on going back to the SS3600 given my comfort level with it and not wanting to necessarily try something that I am not familiar with but your post further solidifies the fact that it's the PAS3800 is the right choice for me.

OP, I agree with the above information that Jake posted, I think he provided some excellent options depending on which path you take.

 

I would throw in there a Precision Industries Vigilante 3600 stall. Launches harder than the yank 3600 and has a much more reliable lockup clutch (ask me how I know), and much better customer service as well. I have one of precisons converters in my dodge too. they are the best by far.

 

Re: Dave @ Yank

That is not correct information if the SS converter has at least 800-900 rpm drop on the WOT 2-3 shift it will stay fully coupled up. At that point the converter unlocked will have around 5% slip and that is it the same as a PAS series. The PAS series just couples up quicker which means you don’t need to shift the rpm as high to get the same 800-900 rpm drop you need on a ¼ mile setup. That is why we will tell people it works better with a power adder like spray turbo ProCharger etc.

-Yank Converters

 

Thank you for the really good info guys. After reading all of that I'm going to go with the yank PAS 3800 with lock up. My Fbody is just a weekend cruiser that I may take to the track a couple times. But I do have plans of hooking a bottle on it sooner or later.

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