Stall speed for street
TECH Resident
Joined: Nov 2011
Posts: 916
Likes: 5
From: Las Vegas, NV
Hate to piggyback, but since there was a TH400 comment in here, maybe this will help him too.
What stall speedfor a TH350/TH400 for street/strip?
My setup will be 273 gears on 26 in tires, looking for 600 rwhp. Is 3600 going to be too high? (will I run into issues on highway cruising if the Stall is 3600 and the motor is turning at 2500@ 70mph?)
Thnx.
What stall speedfor a TH350/TH400 for street/strip?
My setup will be 273 gears on 26 in tires, looking for 600 rwhp. Is 3600 going to be too high? (will I run into issues on highway cruising if the Stall is 3600 and the motor is turning at 2500@ 70mph?)
Thnx.
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
X2 - I mentioned I have a TH400 a couple of times and yet there's alot of "disk" talk. Pretty sure we have a couple of different scenerios being talked about here.
Pretty sure the valve body has to support lock up. i dont believe your standard th400 can have lock up unless you specifically asked for it. i may be wrong.
as far as price.. this is a good read..
https://ls1tech.com/forums/automatic...education.html
as far as price.. this is a good read..
https://ls1tech.com/forums/automatic...education.html
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
My great neighbor friend just gave me a freshly rebuilt BOP th400 and a 10" ATI "Streetmaster" converter. ATI says is good for 800-1000 more stall over stock. Not sure what the stock stall is. Friend says it was around 2800rpms or so. Since its free I'm going to try it, but I dont know if this converter will like the 3.27 rear. ATI specs this conveter for 4.11+ rears. I could then get this tightened up or just go ahead and get the "right" converter.
thoughts??
thoughts??
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My great neighbor friend just gave me a freshly rebuilt BOP th400 and a 10" ATI "Streetmaster" converter. ATI says is good for 800-1000 more stall over stock. Not sure what the stock stall is. Friend says it was around 2800rpms or so. Since its free I'm going to try it, but I dont know if this converter will like the 3.27 rear. ATI specs this conveter for 4.11+ rears. I could then get this tightened up or just go ahead and get the "right" converter.
thoughts??
thoughts??
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
Pretty sure my first ride was a 68 GTO had a 455 poncho motor in it TH-400, I ordered a stall for it and got one for a chevy, the bolt pattern on that converter was smaller, so I drilled the flywheel and ran it anyway, The input shaft is the same and so is the spacing but BOP has a wider bolt pattern by about 3/4 inch if I remember correctly This was about 8 years ago. so I had to drill new holes about 3/8 inch inside of the factory BOP holes on my pontiac flex plate. What you can do is have your converter shop weld on a pilot and adapter plate to the converter and it would be a direct bolt up then, no spacer or drilling required would be stronger than running spaced bolts and a spacer too and would probably be cheap to do around 100 dollars if I was to guess. The cameron converter in my T/A was done that way so it is now a direct bolt up. I can get a pic of it if your curious about what involved with what I am talking about.
Thread Starter
Joined: Nov 2009
Posts: 1,621
Likes: 31
From: THORNTON, PA (NEAR PHILLY)
Pretty sure my first ride was a 68 GTO had a 455 poncho motor in it TH-400, I ordered a stall for it and got one for a chevy, the bolt pattern on that converter was smaller, so I drilled the flywheel and ran it anyway, The input shaft is the same and so is the spacing but BOP has a wider bolt pattern by about 3/4 inch if I remember correctly This was about 8 years ago. so I had to drill new holes about 3/8 inch inside of the factory BOP holes on my pontiac flex plate. What you can do is have your converter shop weld on a pilot and adapter plate to the converter and it would be a direct bolt up then, no spacer or drilling required would be stronger than running spaced bolts and a spacer too and would probably be cheap to do around 100 dollars if I was to guess. The cameron converter in my T/A was done that way so it is now a direct bolt up. I can get a pic of it if your curious about what involved with what I am talking about.
Guys , Don't cheap out on converters for a turbo car. Get with a company that knows how to spec them out. You can get one for a th400 to LS flexplate, no spacers needed.
The Converter Makes or Breaks a turbo car.
The Converter Makes or Breaks a turbo car.
I agree but cameron built mine custom for my application at a fraction of the cost of competitors and you cant get much better than what he puts out. Besides from what I gather this converter was free so why not try it, if its loose run some John Deere hydraulic and tighten it up about 300-500 rpm, other benefits are reduced trans temps mine dropped about 30 degrees and firmer shifts as the fluid doesnt have any detergents like dextron 3.
Last edited by Preston99WS6; Dec 29, 2013 at 07:45 PM.
