Drivetrain Clutch, Torque Converter, Transmission, Driveline, Axles, Rear Ends

Lock-up or non-lock up???

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Old Aug 13, 2007 | 12:59 PM
  #1  
ChevyTuffD.A.'s Avatar
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Joined: Aug 2003
Posts: 1,214
From: Fort Bragg, NC
Lock-up or non-lock up???

Alright guys I am really wanting a new converter. Right now I am stuck with one of those re-built 12" converters that are supposedly re-stalled to 2400 rpm, yea right. I realize that this converter is junk and probably isnt giving me much of a gain at all at the track. Right now I am trying to figure out what type of converter I want. Originally I was set on getting a lock-up converter bc my car is drivin on the street. But then I realized how little I actually drive my car. I usually only drive the car on the weekend. Usually just at night time to go meet up with some fellow car buddies. I dont ever drive the car more then 10 miles away. Heck, the track probably isnt any more then 10 miles away. I have 2 other cars so this car is FAR from being my daily driver. Having said that, gas mileage isnt an issue for me bc I drive the car so little. I've only put maybe 9k miles on the car in the 4 years Ive had it. So now I am thinking about getting a non lock-up converter. Mostly bc they are cheaper and I dont feel I have the need for a lock-up. Also, wouldnt a non lock-up be lighter then a lock-up bc it doesnt contain the lock-up clutch? I know they generate more heat and I already have some back-up for that problem. I havent installed it yet but I have one of those 12"x12" coolers with the electric fan on the back of it. Would I be able to drive the car say, 45 miles one way? The shop I want to get my dyno tune from is about that far away. Please give me some input on this and tell me what you think. Thanks. Dustin.
Old Aug 13, 2007 | 02:31 PM
  #2  
izzyz28's Avatar
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Joined: Oct 2003
Posts: 618
From: Chicago burbs
Trust me, you'll want to spend the extra money on a good 9.5" lockup converter. I have a Yank SS 3600 that is currently not locking up due to other issues, and driving the car around in OD sucks! Even on the interstate at 75 MPH the converter is still very loose, and accelerating up hills or passing someone without downshifting causes the converter to slip a LOT. Around town in 3rd gear you'll be all right, but in OD you'll really miss the lockup. Also, non-lockup converters can cause overheating problems and I believe the trans. needs to be modified if you do run a non-lockup TC. Spend the money on a good Yank/Fuddle/other reputable brand converter.
Old Aug 13, 2007 | 03:57 PM
  #3  
Pro Built Automatics's Avatar
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Joined: Apr 2001
Posts: 716
From: Calimesa, California. US
There are many reasons to keep the lockup, and they have been covered numerous times here. "Do not" get rid of the lockup.
Old Aug 13, 2007 | 04:40 PM
  #4  
TobyZ28's Avatar
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Joined: Aug 2002
Posts: 2,325
From: BC
Get a yank 3000+ Lockup converter and youll be grinning for weeks (It should match your hotcam well)
(Bout a year for me and im still grinning haha)
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