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05-14-2018, 02:29 PM | #1 |
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4L60E Trans and Converters
Can you install a non locking racing converter in place of a locking converter without issue?
D |
05-14-2018, 04:20 PM | #2 |
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Re: 4L60E Trans and Converters
There were 4 different turbine shafts available for the 700-R4 and 4L60e . The 4L60e came with 2 of them , a 298mm style , 30 spline , with a short stub journal with a seal on it , on the engine end of the shaft , and a second style meant for the 300 mm converter , 30 spline , but with a larger o-ring seal after the spline closer to the pump . As long as you inform the converter manufacturer which style shaft you have , there should be no problem using a converter without a converter clutch in it .
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05-14-2018, 05:00 PM | #3 |
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Re: 4L60E Trans and Converters
Been a few years since I delt with this, while my race car was still a street car. Seems like it required an input shaft without the passage through it, or the hole in the shaft plugged. Wish I could remember which. The people at TCI or ATI could tell you.
That 3.06 low gear is not likely a big issue for your car. Mine was like a tractor. Standing straight up, or spinning the tires. Front end stayed up through second gear in good air, if it hooked well. Likely not so much of an issue in a 4000 lb car with less hp. Big RPM drop at the shifts won't help anything. T350 trans was faster.
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Ed Wright 4156 SS/JA Last edited by Ed Wright; 05-15-2018 at 10:30 AM. |
05-15-2018, 07:56 AM | #4 |
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Re: 4L60E Trans and Converters
Concerning the 3.06 first gear, Sonnax offers a replacement 2.84 gear set.
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Jim Kaekel 3836 STK |
05-15-2018, 11:49 AM | #5 |
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Re: 4L60E Trans and Converters
That would be some help.
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Ed Wright 4156 SS/JA |
05-15-2018, 12:36 PM | #6 |
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Re: 4L60E Trans and Converters
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05-15-2018, 12:51 PM | #7 |
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Re: 4L60E Trans and Converters
I would certainly consider trying it. Although your car is hefty, a lower numerically gear set would provide closer ratios and less RPM drop on the gear changes, and may pick you up some E.T. The 3.06 may provide a quicker 60', for example, but that certainly doesn't guarantee that you will have a quicker E.T. slip. Just my .02.
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Jim Kaekel 3836 STK |
05-15-2018, 01:48 PM | #8 | |
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Re: 4L60E Trans and Converters
Quote:
Does great in 1/8 mile and does not bog in between. Already in third before the 1/8th mile.. D |
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05-15-2018, 02:50 PM | #9 |
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Re: 4L60E Trans and Converters
You need to modify the convertor clutch circuit to feed the torque convertor properly by using a kit like this https://www.summitracing.com/parts/trg-4l6-ccv.
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05-15-2018, 04:44 PM | #10 | |
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Re: 4L60E Trans and Converters
Quote:
http://www.performabuilt.com/gm%20pe...d%20truck.html Just called and talked to Frank at PerformaBuilt... I can install a Non-Locking converter in place of the Locking Converter with no issues. Should have spoken to him first. Now have to decide the correct size and stall. What is a good stall speed to start with 5000rpm? John Partridge suggested 5500/5600 with full up Stocker cam. Dan Last edited by Dan Fahey; 05-15-2018 at 05:04 PM. |
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