liquafried
Forum Newbie
Posts: 21
Reg: 04-01-12
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05-02-12 08:45 AM - Post#2221517
I want to switch the old th350 out of my 86 c20 silverado 3\4t, with a 200r4 or 700r4. Anyone know if the driveshaft will fit without haveing to shorten or lenghten it. I need to by this fast and ive been beating my head agaisnt the wall trying to find any info on a 1986 c20 silverado shortbed.
Thanks in advance becuase any help is greatly appreciated.
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Allan In NE
Contributor
Posts: 898
Reg: 12-27-11
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05-02-12 11:11 AM - Post#2221578
In response to liquafried
Yep,
Should plug right in. If it's got a 350 in it now, someone, somewhere has already swapped in the other direction.
They didn't come out with 350s in '86. 
Allan
| Lifelong GM automatic transmission specialist |
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liquafried
Forum Newbie
Posts: 21
Reg: 04-01-12
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05-02-12 11:34 AM - Post#2221594
In response to Allan In NE
Nice. I didnt know that. I believe its got a 350 block in also.
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 Vaughn
"11th Year" Gold Supporting Member
Posts: 13552
Loc: Colorado Springs, CO
Reg: 08-08-04
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05-03-12 01:57 PM - Post#2222042
In response to liquafried
The 700r4 won't fit without modifying the driveshaft, but the 200r4 will.
200r4 won't hold up to a lot of torque or towing situations without modifications. Generally a 700r4 is better in this instance.
The 700r4 came stock in 86 trucks, so all you would need is to get a 82-87 truck 700r4 driveshaft and replace yours with it.
Having a driveshaft shortened is not a big deal. Usually most moderate sized cities will have a driveline shop that can do it within a day or so. You do have to have the output yoke from a 700r4 though, before taking it in to be shortened.
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liquafried
Forum Newbie
Posts: 21
Reg: 04-01-12
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05-04-12 07:09 AM - Post#2222318
In response to Vaughn
thanks man, the info is exactly what i needed. Ive got to this project rolling.
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drtyler (4)
