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TH400 2,3 shift not occuring

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Old May 24, 2010 | 07:32 PM
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Default TH400 2,3 shift not occuring

I got a 85 fox ls1 th400 swap that I finally got together and took it to the track last Friday.
The car 1,2 shift is occuring at 4,200 rpms, I think the govenor just needs re-weighted to fix that.
However the 2,3 shift never occured, so the last 300 feet I was bouncing off the rev-limiter. Was wondering what could be wrong with it not doing the 2,3 shift, and what to look at.
Thank you
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Old May 27, 2010 | 07:22 AM
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Any ideas?
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Old May 28, 2010 | 11:27 PM
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Originally Posted by groundczero
Any ideas?
Make sure you have manifold vacuum first not ported.
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