2/8/05

Mike, Can you tell me what would cause my TH350 to stay in 1st gear for about 500 to 600 rpm's after I shift into 2nd gear? Once it actually shifts it shifts hard, just stays in first for some reason. High gear shifts as soon as I hit the shifter. Thanks, MalibuMan

Malibu Man,

There are a few possibilities that we can check out on your 350 set up. First you really didn’t give us as much info about your transmission . Does it have a manual valve body or trans. Brake? I am guessing that it is a modulated unit or a street strip unit as we call them. On this type of unit there are quite a few things that can affect shift timing.

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A. Modulator vacuum or lack of it.

B. Possibly a sticky 1-2 shift valve.

C. Miss aligned manual valve causing the circuit to not fill quickly enough.

D. Possible damaged intermediate clutches causing slipping.

E. 350’s are hard on stock style intermediate sprags, you may have a damaged sprag.

There are quite a few possibilities!

Thanks,

Mike
Mike’s Transmission
Lancaster CA
(661) 723-0081

To contact Mike Stewart email trannytech@dragracingonline.com