LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Predictions TH400

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Old 05-08-2012, 12:04 AM
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Default Predictions TH400

Alright people, predictions... I'm going to test n tune with the new TH400 on weds. It went 12.20 @ 116.4 at 6900 DA with only a 1.9 60. Only changes are trans and drive line .... what do you predict it will run N/A assuming a similar DA?
Old 05-08-2012, 06:02 AM
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What size stall?
I'm hoping you say 3800-4200 with everything else as it was, you should see 1.5/6 60' and run 11.85 @ 112 MPH is hard to say due to altitude and going from an m6 to a 400
Old 05-08-2012, 06:14 AM
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Im gona say 11.7s@114. Good luck
Old 05-08-2012, 07:44 AM
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depends on the converter and rear gears. If you have a nice 4000 stall with 4.11's and a 26" tall tire, I would estimate it at 11.6-7@116 with ~1.5 low 1.6 60ft.
Old 05-08-2012, 08:41 AM
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14.2 @ 98
Old 05-08-2012, 10:16 AM
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Purple.
Old 05-08-2012, 10:20 AM
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12.00......
Old 05-08-2012, 02:12 PM
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Converter will go about 4700 N/A. Still has the 4.30s back there
Old 05-08-2012, 03:54 PM
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11.85@115.6
Old 05-08-2012, 04:10 PM
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1.54 60' foot
11.58 @ 117
Old 05-08-2012, 06:07 PM
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manual valve body? What kind of RPM will you be turning? I'll guess it picks up anywhere from .3 to .8 as long as it can sixty foot worth a damn.
Old 05-08-2012, 07:42 PM
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Yeah manual
Old 05-08-2012, 08:13 PM
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60 foot will be a 1.65
1/8th 7.35 at 94
1/4 11.55 at 115.8
Old 05-08-2012, 08:59 PM
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When is this going down?
Old 05-08-2012, 10:16 PM
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11.93/118.2
Old 05-08-2012, 10:21 PM
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Still have some bugs to work out with the swap unfortunately so no track time tomorrow, soon though.
Old 05-09-2012, 02:58 AM
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http://www.youtube.com/watch?v=qDL_JxFS01g
Old 05-09-2012, 03:06 AM
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did you get it retuned after the t400 swap?

your talking about the surging off of the gas?
i think your pcm is looking for a speed singal. im not 100% sure but thats has to do with the tune
Old 05-09-2012, 04:51 AM
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All I can do is compair what my swap did in my 4200 lb boat. I picked up 3-4 mph N/A and went from 11.40's with the 60 to 11.0's with the TH400. Also went 9.90's on Nitrous at 135 coming off the brake at 2800 and nitrous not coming in until 4600. You will love the PTC converter. Mine is awesome and works flawlessly. My TH400 is a reverse manual valve body with Trans Brake and a 3800 PTC converter with a upgraded steel stator. Let us know how it does.
Old 05-09-2012, 11:37 AM
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Originally Posted by tt383lt1
did you get it retuned after the t400 swap?

your talking about the surging off of the gas?
i think your pcm is looking for a speed singal. im not 100% sure but thats has to do with the tune
Where did I say anything about surging? It runs fine, just have some issues to work out with the trans itself.


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