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turbo 350 swap

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Old 06-08-2012, 02:23 PM
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Default turbo 350 swap

I know this isn't the first time this question has been asked, I've used the search bar and cannot find the answer to my question, i have a 01 5.3 rcsb I'm tired of pulling the 60e and don't have the funds for a 80e, but i have a few turbo 350s laying around, i know i have to put the 5 speed tune in and need the flywheel spacer and prob make a new crossmember, but my question is, will a long tailshaft not require me to cut my drive shaft? thanks everyone
Old 06-08-2012, 02:26 PM
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Depends on how long the tailshaft is.. dont they have about 3 or 4 diff lengths?
Old 06-08-2012, 09:26 PM
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I've only heard of a short tail and a long tailshaft, I've read somewhere before that one will work but forgot which one
Old 06-09-2012, 05:29 AM
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the th350 is shorter, but not sure how much. long tailshaft might make up for it. i know going 5 speed to th400 is same yoke and driveshaft lenth. you can get a 4l80 for a couple hundred bucks. i paid $220 for the flywheel and spacer to go old school tranny.
Old 06-09-2012, 06:27 PM
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i work for a towing yard and we got parts laying around but no 4l60s or 80s, I've done this swap before in a 98 ls1 camaro. you can reuse the stock flex pate just gotta drill your own converter wholes and get the spacer
Old 06-10-2012, 06:05 PM
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I'm still trying to find someones build that has done this
Old 06-10-2012, 06:35 PM
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I am not bashing you, but typically people go to a stronger trans. Someone that did an actual actual swap to a TH 350 may be difficult to find.

The Long Shaft TH350 will be your closest bet.

This is the first thing that pooped up in a google search.

Reference Manual: Chapter 2: Transmissions: Transmission Lengths

Good luck with swap!!! Hope this helps

Last edited by 1FastBrick; 06-10-2012 at 06:41 PM.
Old 06-10-2012, 07:10 PM
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i'd go w/ th400 over the 350. going from the nv3500 to th400 (4"tail) crossmember and driveshaft were the exact same. don't know about 4l60 tho.
Old 06-11-2012, 12:03 AM
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Originally Posted by 1FastBrick
I am not bashing you, but typically people go to a stronger trans. Someone that did an actual actual swap to a TH 350 may be difficult to find.

The Long Shaft TH350 will be your closest bet.

This is the first thing that pooped up in a google search.

Reference Manual: Chapter 2: Transmissions: Transmission Lengths

Good luck with swap!!! Hope this helps
thank you that answered my question, the reason behind the th350 choice, i work for a towing company, i traded out a few tows for a built th350. manual valve body shift kit and stall. i would swap in a th400 but i don't have one laying around wished i did
Old 06-11-2012, 05:41 AM
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The 9" tailshaft th350 will be almost the same length. The 12" tailshaft is frm an rv and not desirable. Irc the 9" tail is like 1/4-1/2" shorter than a 4l60


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