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4 to 5 gear conversion 1967 Fstb 390 GT

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Old 08-19-2009, 09:30 AM
  #1  
K-Arts
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Default 4 to 5 gear conversion 1967 Fstb 390 GT

Hi all,

i was wondering which the most uncomlicated way would be, to convert the 4 speed to a 5 speed. Maybe a T-5 Tremec?

thx for all input!

Michael
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Old 08-19-2009, 09:49 AM
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i checked the FAQ, but i only found Auto to T5 conversions.
Is it then the easiest thing to change from toploader-4 to T5?

thx
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Old 08-19-2009, 09:50 AM
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TexasAxMan
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T-5. All you would need would be a fulcrum spacer (if you use the T-5 bell) and a crossmember. You might have to shorten the driveshaft as well.

If you want to use your existing bell, you'll need the adapter.

Check out the link below, it pretty much explains it all.

http://www.sacramento-mustang.com/Ne.../t5_swap.shtml
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Old 08-19-2009, 10:06 AM
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Norm Peterson
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Might want something a bit stouter than a T-5 if you've still got a 390 under the hood.


Norm
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Old 08-19-2009, 10:33 AM
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Starfury
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I agree. Even the T5z is only rated to 330ft-lbs, which is very easy to exceed with a big block.

If you're set on a 5sp, I'd start looking at TKO's.
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Old 08-19-2009, 12:19 PM
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1965screamer
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What about G-force internals? They can handle some power and probly a little cheaper then a TKO.
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