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Auto to 4 spd swap - Need tutorial

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Old May 25, 2006 | 12:05 PM
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Default Auto to 4 spd swap - Need tutorial

Am converting my Th400 to a BW Super T-10 on my
74. I'm pretty mechanically inclined but this in fairly unchartered territory for me. Question: are there any write-ups on the forum or anywhere else than I can use to guide me thru the process.
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Old May 25, 2006 | 12:24 PM
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I don't have an answer, but I do have a question (the answer is probably obvious to most here), but why not go to a 5-spd or 6-spd instead of the 4-spd? I have a 4-spd and when money permits I'd like to swap in a a 5-spd, or maybe even 6-spd, along with a new engine of course.
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Old May 25, 2006 | 12:35 PM
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That's easy.....money. Picked up a complete set-up for $1,100. Pedals and everything. Looked at going the Keisler route but lack of dinero helped me make up my mind. Think of it this way. Could've gone Keisler for $5k or the route I went and now have $3,900 of beer money. I drink the cheap beer so that's like 7,800 bottles of the Beast. Maybe I need to factor in a liver transplant as well. Hmmm.......this changes things. Maybe Keisler is cheaper with all things considered???

Last edited by TXredc3; May 25, 2006 at 12:39 PM.
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Old May 25, 2006 | 12:47 PM
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Originally Posted by jcoulter
....or anywhere else than I can use to guide me thru the process.
Buy the '74 assembly instruction manual (AIM). It will show the the TH400 and the 4 speed stock set ups and you will be able to compare the differences between the two, including the clutch pedal arrangement. The AIM will also list the original parts and their original part numbers if you need to do some further parts searching. The 4 speed and auto frames are different, so you've got some changes to make.
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Old May 25, 2006 | 01:22 PM
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Originally Posted by skeptic
I don't have an answer, but I do have a question (the answer is probably obvious to most here), but why not go to a 5-spd or 6-spd instead of the 4-spd? I have a 4-spd and when money permits I'd like to swap in a a 5-spd, or maybe even 6-spd, along with a new engine of course.


Stick with the TH400 unless you are really looking for better gas mileage, which would merit buying the 5 or 6 speed. The money savings in fuel alone would cover any excess costs. Otherwise the th400 is a VERY good transmission, almost bullet proof...



Gonzo
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Old May 25, 2006 | 01:49 PM
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Originally Posted by gonzo14


Stick with the TH400 unless you are really looking for better gas mileage, which would merit buying the 5 or 6 speed. The money savings in fuel alone would cover any excess costs. Otherwise the th400 is a VERY good transmission, almost bullet proof...



Gonzo
Gas mileage and highway cruising at lower RPMs are the main reasons I want a 5-spd, plus 1st gear is a bit tall when stuck in stop and go traffic. On the other hand, I didn't realize the 5-spd setup was $5k just in parts. With as little as I drive it would be decades before the fuel savings made up for the cost difference. I'd still prefer a 5-speed over a 4-speed, and any manual over an auto, but I see where jcoulter is coming from and why he want that route.

Back on topic..
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