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FLT Drivability

Old Jul 15, 2007 | 04:40 PM
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Default FLT Drivability

As I posted below, my tranny died after I tried to drive it with almost no fluid (89K miles on a stock 4L60e and most of that with a Maggie, so I can't complain). So I'm looking for a replacement. I like the FLT Level 3, but I notice they install the Transgo shift kit. From what I have read these kits produce very harsh shifts. Is this true with FLT's as well? I don't do the track anymore, and since the truck is a DD, I don't want neck snapping shifts, but don't insist on silky smooth either. I will be reinstalling the stock converter (not what is in the truck now) and replacing the 4.8 with a 6.0. Who would be a good person to talk to at FLT about my needs?
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Old Jul 15, 2007 | 04:43 PM
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Call Chuck @ FLT and discuss it with him. He will set ip up exactly the way you want it. I consider mine firm. I bark the tires during 1-2 shift. It is a little firm for daily driving but it is the way I like it overall. He can make it as firm as you want.
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Old Jul 15, 2007 | 05:03 PM
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Call them. They will hook you right up.


I installed the HD2 shift kit in mine before my transmission took a ****. I put in 1 washer. FLT usually sets up there trannies with 1 washer.

1 washer is enough to make it a really firm 1-2 shift. 2 washers is when its a harsh shift.

I'm sure you can request for them to put in 0 washers.




ah.. I can't wait to get my FLT in!
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Old Jul 15, 2007 | 05:10 PM
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I have put nearly 10,000 miles on my FLT since i got it and i had chuck set it up with mild shifts and it provides a firm positive shift but your dash doesnt shake or anything but at WOT...Good God
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Old Jul 15, 2007 | 06:01 PM
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I really like the way mine is. Firm, but not "jerk you out of the seat " harsh. No problems here.
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Old Jul 15, 2007 | 07:36 PM
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Same here I love my FLT. If you keep your foot out of it shifts are not harsh at all. I would also consider getting at least a level 4 since the cost over the Level 3 is minimal. Especially if you are planning on upgrading to a 6.0L
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Old Jul 19, 2007 | 02:39 AM
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Well, yesterday I talked to Chuck at FLT. Great guy and very knowledgeable, but man he could sell popsicles to polar bears. Anyway he talked me into getting a Level 5 (4L65e) along with a new beefed-up converter (back to stock stall this time). Hopefully this should handle the output of a blown 6.0 OK for my application.

Next is to order the 6.0.

Edit: Done! Well, OK I'm my checkbook is .

Last edited by GMC_DUDE; Jul 19, 2007 at 12:58 PM.
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Old Jul 19, 2007 | 06:28 AM
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is your new tranny going to be vacuum modulated?
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Old Jul 19, 2007 | 06:40 AM
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if daily driveability is a concern, get the vaccum modulator installed when they build it. Its only about a ~$120 upgrade IIRC and it will make driving that thing a dream...I have it on my level 5 4L65E from them.

Last edited by silver-mod-o; Jul 23, 2007 at 09:40 AM.
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Old Jul 19, 2007 | 07:02 AM
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Originally Posted by silver-mod-o
id daily driveability is a concern, get the vaccum modulator installed when they build it. Its only about a ~$120 upgrade is I'm not mistaken and it will make driving that thing a dream...I have it on my level 5 4L65E from them.
If not mistaken, the vac mod really proves its worth increasing reliability of trans shifting. I should've done this mod during my last rebuild, but once again, impatience pushed me to overlook long term gains.

Transmission Sponsors... input desired here!
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