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#12576 06/01/2003 6:40 PM
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Pal
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Hi guys. I have a 68 chevy that has had some tranny problems. Engine is a 250. Originally it had a 3 on the tree, 4 side bolt side Muncie. Due to unavailabilty (and severe lack of funds at the time) I swapped it for a Muncie 4 spd. Now, I have to swap it to an automatic (bum knee). I've read the articles listed, but the seem to be geared (sorry, had to) for trucks older than mine. Q: What automatics will fit and work well?
Thanks, Pal


35 + years of rollin' steel!
#12577 06/01/2003 7:01 PM
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Hello Pal,

Welcome to the Stovebolt cool

I would go with a TH-350,,, a TH-400 or a TH-700R4 for the overdrive capability. I would not use O.D. around town or going over long hills especially when towing. Other than that. You will need to use a driveline for the same truck you have W/automatic. Should be fairly easy to find. The TH-400 will have a different output shaft so you will need the slip-yoke for the TH-400 and there are u-joints that will fit the yoke to the driveline if needed.


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#12578 06/01/2003 11:12 PM
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Pal, if you are going to go to all the work to put in a tranny - double check your rearend gears before you make your choice. If you have 3.90 or 4.10 or 4.11 gears go ahead and put in a 700R4 - expecially if you do any long distance driving without a load.

Sorry to hear about your knee - I would be bummin if I couldn't use a clutch.

#12579 06/03/2003 12:24 AM
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You can also go with the 200R4 behind the 250. It's not as strong as the 700R4, but more than adequate for the 250. I would advise against the TH400, it robs several horses. The TH350 would be a better choice for a 3 speed behind your engine.

Some people swear by the Powerglide, which was available in 68. I had experience with the back then, the only one I had success with was in a Nova behind a 194. It is another option.


Fred
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69 C-10
#12580 06/03/2003 2:04 AM
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Hi, I don't know how much you want to lay out for the OD, but Chevy High Performance magasine has a good article (may 03) on making the th200-4r bullet-proof. It is said the ratios in the lower gears is closer compared to the 700r4. Not all mods would be needed for lower power daily drivers. Supposed to be an easy install(conversion) Good luck and let us know how things go.Tom


65 C10 292/700R4 long fleet...Gettin closer by the day.
#12581 06/03/2003 2:08 AM
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Hi, I don't know how much you want to lay out for the OD, but Chevy High Performance magasine has a good article (may 03) on making the th200-4r bullet-proof. It is said the ratios in the lower gears is closer compared to the 700r4. Not all mods would be needed for lower power daily drivers. Supposed to be an easy install(conversion) Good luck and let us know how things go.Tom


65 C10 292/700R4 long fleet...Gettin closer by the day.
#12582 06/03/2003 2:42 AM
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Thanks for the info and the welcomes. And Ken, the knee isn't terrible, just gives me trouble if I get stuck in traffic jams (in Seattle area? Naw, we don't get those) Mama just gets tired of me limping......
Anyway, it'll probable be awhile till I make the conversion. I just blew all my spare cash on 250 LB from Ram in Spokane. I get to install it in a week. Thanks again all.
Dave
30+ years of rollin steel!


35 + years of rollin' steel!
#12583 06/03/2003 3:11 AM
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Hey Pal - where abouts in Puyallup you at? I grew up in Black Diamond and remember "Doin the Puyallup" on several occations with my '49.

#12584 06/03/2003 3:31 AM
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South Hill area. I own a couple of acres out here. Now if I just had a garage! :mad: cool


35 + years of rollin' steel!

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