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Old 05-12-2002, 04:24 AM
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Post Stall Converte

Hey Guys, I want to know what is the best Stall Converter size to put in a turbo 400 trans which is going to bolt up to a CRATE Chev. Big Block Stock 502 Ci/502 Horse Motor, with whatever cam it comes with and 4 Barrell Carb with air scoop
Thanks. Harry Hut.
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Old 05-12-2002, 03:51 PM
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Hi Harry, There's a previous topic titled 'Best Torque Converter Choice' that's worth reading. There's more to picking a torque converter than just your engine and trans. Your rear end ratio will also play a role. Some of this is explained in other post. "Stall speed is directly related to the amount of torque your engine produces-the more torque, the higher the stall speed. For example, a converter with a 2,800 to 3,200rpm rating might provide approximately 2,800rpm of stall speed behind a mild small block V8, but about 5,000rpm behind a big block making 800-plus ft-lbs. of torque. While most converter manufactures list stall speed ranges, those numbers are very, very general guidelines; true stall speed is impossible to measure do to vehicle variables. Heat is the biggest enemy of your converter and transmission. Stepping up to a higher stall converter can impose higher loads and create more heat, so proper cooling is essential." All that was a direct guote from a converter book. It's verry easy to over due it on a torque converter choice. How much driving you're doing, what kind of driving, average rpm's, all play a role. Hope this helps.

[ May 12, 2002: Message edited by: dmorris1200 ]</p>
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Old 05-14-2002, 09:55 AM
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Hey thanks, you seem very knowlegeable, wHO SHOULD i TELL ALL MY STATS TO IN ORDER TO GET THE RIGHT STALL CONVERTER? i SUPPOSE THE TRANS gUY hUH?
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Old 05-14-2002, 09:57 AM
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aLSO, WHERE OR HOW CAN i FIND WRITINGS ABOUT PICKING THE BEST STALL CONVERTER? wHERE IS THE TOPIC LOCATED SO i CAN READ UP ON IT. tHANKS FOR ANY HELP. Harry Hut
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Old 05-14-2002, 05:21 PM
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Did you find the topic titled 'Best Torque Converter Choice'. [quote] Well here it is the way I understand it, maybe I'm just a little conservative. You need to find out what kind of driving your looking to do. Are you driving daily, highways, around town. Do you just want a car that only comes out on the weekends and will destroy anything off the line. These questions will help you determine what gears to put in the rear as they will control your engines operating rpm's. Then once you find out what your average rpms are during most of your driving (if you're driving this around regularly) you want to keep your stall speed below that. If you mostly cruise around at 2,500rpm and you have a 3,000rpm stall converter you will overheat your trans fluid over time. If bad enough she'll feel like she's slipping in and out of gear while driving. The main reason for using a high stall converter is for a race engine that can't idle. If you built an engine that hairy that it needs that high a stall speed you shouldn't be thinking about low gears anyway. I would finish the rear first and see where your rpms are. Then think about a converter. I would also recommend a trans temp gauge. Slippage creates heat so you want to monitor fluid temp closely after you change the converter. I'm running a 302ci engine in my car. About .471 lift, 218deg intake-228deg exhaust @ .050" on the cam. I'm building a 3.70 9-inch rear for her at the moment. After thats done I'll decide on a converter, but I'm thinking along the lines of a 2,000 to 2,400 TCI Breakaway or Saturday Night Special. <hr></blockquote> When you're ready to pick a converter check to see if any converter manufacturers offer a tech line. But the more you understand yourself the less you'll have to rely on outside opinions (there's a lot of different ones out there). I believe in only using as much stall as is needed. Some use it as a way of making there car seem badder than it is. A high stall converter does sound cool but I wouldn't want it in a daily driver. Good luck and happy reading.
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