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12-19-2004, 08:02 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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12-19-2004, 11:12 PM
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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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12-20-2004, 06:46 AM
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What kind of updates should it have?
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12-20-2004, 11:51 AM
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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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12-20-2004, 01:06 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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12-20-2004, 05:35 PM
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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
__________________
At the Bonneville Salt Flats, first gear is known as 130 mph. Last edited by Crosley; 12-21-2004 at 06:57 AM.
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12-20-2004, 10:55 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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12-21-2004, 06:58 AM
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I corrected the URL error.
the link functions now.
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At the Bonneville Salt Flats, first gear is known as 130 mph.
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