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Author Topic: Tranny question  (Read 4414 times)

Offline low budget

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Tranny question
« on: September 18, 2009, 08:08:25 am »
I have an 86 long bed 2wd that has a bad TH350 in it now.  I would like to go with the 700r4 and want to know what mods need to be done to fit this in or will it just bolt in.  Thanks... 
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86 Chevy LWB 305 scrapped for 350, 3/5 drop

Offline Captkaos

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Re: Tranny question
« Reply #1 on: September 18, 2009, 02:34:55 pm »
If your Transmission has the 9" tail, you should be able to move the crossmember back to the predrilled 700R4 hole and reuse your driveshaft.
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Offline low budget

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Re: Tranny question
« Reply #2 on: September 18, 2009, 09:50:22 pm »
Yes, it has the tail.  I'll get under there and look for the holes, Thanks Capt...
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86 Chevy LWB 305 scrapped for 350, 3/5 drop

Offline rick_c

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Re: Tranny question
« Reply #3 on: September 19, 2009, 11:35:31 pm »
All the swb trucks Ive messed with didn't have two sets of holes and I have never had a problem with a trans swap from a th350 to a 700 or vice versa

maybe the lwb are different.
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Offline Irish_Alley

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Re: Tranny question
« Reply #4 on: September 20, 2009, 05:58:43 am »
well if it don't have the holes bolt the trany in place w/ cross member sitting on the frame and bolted to the trany if no holes still line up then take the cross member out put in on the underside of the frame and mark and drill
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Offline Captkaos

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Re: Tranny question
« Reply #5 on: September 20, 2009, 06:15:37 pm »
Putting it on the bottom and marking/drilling won't put it in the right spot.
All 82 and up trucks should have all the holes drilled for all transmissions.  All the ones I have had do.
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Offline low budget

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Re: Tranny question
« Reply #6 on: September 20, 2009, 09:59:13 pm »
Haven't had a chance to get under there and look yet, but I'll let you know...
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86 Chevy LWB 305 scrapped for 350, 3/5 drop

Offline Irish_Alley

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Re: Tranny question
« Reply #7 on: September 21, 2009, 11:56:43 pm »
Quote from: Captkaos on September 20, 2009, 06:15:37 pm
Putting it on the bottom and marking/drilling won't put it in the right spot.
All 82 and up trucks should have all the holes drilled for all transmissions.  All the ones I have had do.
why not if you line it up with the trany mount then square it up to the frame ?
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If you can’t tell yourself the truth, who can you tell it to?~Irish_Alley

When you have eliminated the impossible, whatever remains, however improbable, must be the truth ~Sherlock Holmes

Offline Captkaos

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Re: Tranny question
« Reply #8 on: September 22, 2009, 02:30:09 pm »
There is angles involved and you end up drilling the holes to far back.  Been there done that.
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