Doing my first automatic build ever and having thoughts about converter.
Its ls1 with a d1-sc. its puts down 808Nm (595lb-ft) torque and 682hp at 5000-6000rpm to the hubs. I have bought a th400 and wonder about the stall. is this a sorta good converter for me? I know that no one can say for sure, but I just need some input. 4k stall is what I think.
I wouldn't say that is a good converter for you, not based on stall speed, but on efficiency I would not run that converter. The slip percentage will be very high because that is a cheap bullshit converter. If you want to discuss stall speed that is a separate question. You have to consider what you intend to do with the vehicle it's power band and decide where to compromise. For instance if its a race car the major considerations are power band vs rpm drop per shift down track, and power application vs weight, traction, and starting line gear ratio. If its more of a street car you're going to have to compromise differently. Generally speaking on a centrifugally supercharged combination stall speed will be in the neighborhood of the rpm where peak torque is reached, dependent on gear change rpm drop. In a lighter vehicle 4000rpm can be a fairly street able stall speed provided you don't live in say San Francisco. With that being said you really can't go wrong with something in the neighborhood of 3400-3600, very street able.
Your best bet is to call PTC answer their questions listen to their recommendation and purchase from them. If you're willing to spend $630 on a guess in a box, they're not going to be much more, and you will be happy with what they send you.
I would hope that wouldn't be a problem given the amount of good things you read about their product, but if no joy there try circle D. I'm in New Zealand and bought one from them a couple of years back, filled out their spec sheet and a few emails back and forth and all turned up quick smart and impeccably packed. I haven't used it yet but have no doubt it will do the business.
I got a hold of a guy working at PTC. He recomended 2 converters for my car. Both are 10". one is a 4000rpm stall at 499usd and would be good if the car is on the road alot, wich mine will be. The other is a 4500rpm stall at 900usd and would be the better choise for the track.
I went with the first one because I will be on the road quite a bit and will probobly switch to turbo next winter.
White if you're in Sweden have you heard of the Asconan? If so try messaging Dennis and Magnus through their Facebook page and ask them if they know anyone over there who can help you. They're good dudes.
went with PTC via Dusty Bradford. nearly everywhere i looked he was the answer given, so i did that. TH400 as well. getting the driveshaft shortened now..should be on the road just in time for winter storage haha.