If it's worn enough you'll likely end up with a bit of a leak. If you're dealing with used parts, check the driven gear shaft for wear where the seal rides on it. There's also a small lip seal in the sleeve to seal it to the driven gear shaft. This ensures that the driven gear properly engages the drive gear. The hole in the sleeve is slightly off-center and the sleeve may have to be rotated somewhat to properly index the tooth count number on the sleeve to a certain position in the extension housing, possibly the holdown bolt or a mark on the holdown clamp.
As mentioned already, make sure the sleeve is marked for the correct number of teeth for your driven gear. The TH700 and some other models use a larger sleeve to work with the larger driven gears. For most TH350 trans the sleeve is considerably smaller, about the same diameter as your thumb, and is bullet shaped. The part you're after is called a speedometer driven gear sleeve. Just to clear up some of the terminology if you end up dealing with a GM parts guy, especially if he's kind of new to the business. Converts Transmission Mechanical Signal to Electronic for Aftermarket Speedometer Gauge. I already have the driveshaft shortened (dont know if the earlier 700r4's had shorter tail shafts w/ mechanical speedo drives or not) So I am not sure If I want to dick around with swapping tail shafts. DAYTONA Motorcycle Speedometer Conversion Adapter Convert Mechanical to Electric Speedometer (93390) 4.4 out of 5 stars 119. I am running 225/75/R15's with a 3.90 gear ratio rear end.
#700R4 TRANSMISSION CONVERSION NO ELECTRONICS DRIVER#
15 tooth driver gear, 41 tooth driven gear. I am looking for the cheaper route here, but I already have the conversions and know what I need to get as far as a speedo gear. I plan on using the original speedo in my 59 apache, but have a 700r4 tranny, it is out of a 1986 camaro, which I believe is a electric readout as far as the speedometer.Ĭan you just swap electric speedo gears for mechanical and be on my way (without changing the tail shafts, which I think is just wishful thinking), do I have to swap out the entire tail shaft, or do I somehow get a VSS (vehicle speed sensor) and just find some kind of converter that fits under the dash? I was wondering if anyone has attempted a conversion from electric speedo gears to mechanical.
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