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post #1 of (permalink) Old 10-31-2000, 01:40 PM
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shift speed

I just had my transmission rebuilt. It is a 3 sp with overdrive. I think it shifts way too late but would like to hear from others on how their's shifts. Mine shifts to second at 20mph and third at 40. Is this too late? And does anyone know if it is hard to set it so it shifts earlier?

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post #2 of (permalink) Old 11-01-2000, 12:29 AM
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Re: shift speed

I had the same tranny rebuilt (I believe it's an EL40 or something like that) and the guy that did it put a delay valve in it. But it made only overdrive shift in later. I was told (and I trust him, he's a fleet service manager) that overdrive was supposed to kick in at 40mph from the factory, and that the delay valve changed it to 45. Sounds like you have the opposite problem though. Check your tranny detent cable. It's connected to the throttle lever up under the air cleaner, opposite side of the lever from the throttle cable itself. You'll see that at the end of the detent casing there is a large black adjusting block with a semi-circle metal tab that you push in to adjust the casing length. Sounds like you want to want to shorten the casing, so press the tab, and bring casing towards open end (if that makes sense!) You'll hear clicks, only move a couple at a time then test drive. Should help. If it's too out of wack, truck'll rev high before shifting (like yours), or will shift to early and be real doggy. Mess around with it, just be sure you don't go so far that the tranny drops hard when shifting. This was what I had to do (and was told to do by him) and it worked. Did you put the tranny back in yourself? I did. But if someone did for you, they should've done it for you.

post #3 of (permalink) Old 11-01-2000, 11:24 AM
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Re: shift speed

I had it "professionally" rebuilt. Thanks for the info, now i have to decide whether to take it back and spend half a day there or mess with it myself.

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post #4 of (permalink) Old 11-01-2000, 01:30 PM
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Re: shift speed

I'm a TH-350 guy myself, so I don't know if this applies. On mine there is a vacuum modulator on the trans that is adjustable. I adjust it from the vacuum port with a screwdriver. I can make it shift into 3rd by 5mph, or rev to 4000 before shifting to 2nd.


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post #5 of (permalink) Old 11-03-2000, 05:12 PM
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Re: shift speed

Thanx for all the help. It worked and now my truck shifts normally once again. Will it mess anything up if it shifts too early?

post #6 of (permalink) Old 11-05-2000, 01:02 PM
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Re: shift speed

No, it'll be fine. What hurts them is the stock soft shifts. It shortens clutch life because they engage so slow and the clutches slip 'till lock-up. shifting sooner will make this a little worse, but a shift-kit will fix that by engaging the clutches quick enough that they will probably outlast the rest of the tranny.

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