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Old 12-19-2004, 09:02 PM
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Astro 700r4 any good for my 350??

I'm searching around for a 700R4 to put behind my stock 350 sbs and have found a 86 or 87 Chevy Astro (4.3) with a good 700r4. Is this a good donor tranny for my 350??

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Old 12-20-2004, 12:12 AM
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An early 700 like that should be torn down, and have the updates done. Then, it should be fine.
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Old 12-20-2004, 07:46 AM
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What kind of updates should it have?
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Old 12-20-2004, 12:51 PM
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There's a whole list of stuff that was changed/updated, on the 700, almost up to the advent of the 700E.

I'm not confident enough about 700 guts to try and list them, here.

A good tranny shop should be able to do it all, into a rebuild.
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Old 12-20-2004, 02:06 PM
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Do you know what the last year was that the 700R4 had a gear speedo, not electronic? Or is the electronic one convertable to gear speedo somehow?
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Old 12-20-2004, 06:35 PM
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Cool

murrsue,

the tranny you mention will be fine for a stock 350 chevy motor.

the 4.3 trany will need larger boost valves, servo besides the usual parts for a quality rebuid.

I would recomend a TransGo shift kit for it also.

If you are going to hotrod this tranny then some changes / upgrades would be prudent.

visit my pages for speedo conversion inforamtion


http://www.geocities.com/crosley_az/700spd.htm
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Last edited by Crosley; 12-21-2004 at 07:57 AM.
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Old 12-20-2004, 11:55 PM
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Crosley, I'm very interested in your speedo conversion but that link won't work. Please check that it's correct. Murray
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Old 12-21-2004, 07:58 AM
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I corrected the URL error.

the link functions now.
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