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Author Topic: 1981 SX/4 transmision swap  (Read 4430 times)

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Offline amcman73

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1981 SX/4 transmision swap
« on: December 08, 2015, 10:15:26 PM »
I have a 1981 SX/4 Iron duke with the SR4 manual transmission has any one swapped it for the 5-Speed  T5 Transmission  I would rather put a 5 speed in the car than fix my 4 speed. Any suggestions to the swap ?
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Offline carnuck

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Re: 1981 SX/4 transmision swap
« Reply #1 on: December 11, 2015, 10:21:49 PM »
Get the bellhousing, etc from a Chev S10. IIRC, it's an SBC or 4.3L V6 pattern?
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Offline amcman73

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Re: 1981 SX/4 transmision swap
« Reply #2 on: January 09, 2016, 01:43:00 PM »
Well I went ahead and had the 4 speed rebuild . I didn't want to mess with doing a swap . I just wanted to get my Eagle back on the road! Its a world of difference in shifting with the new clutch , rebuilt the clutch pedal assembly!
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Offline vangremlin

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Re: 1981 SX/4 transmision swap
« Reply #3 on: January 09, 2016, 02:20:48 PM »
Good to hear that its back on the road!
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1981 Kammback 258 - "Pepe"
1980 Coupe 258 - "Ginger
1972 Gremlin X 304
1978 Gremlin 4 cyl 121 - sold
1964 TBird 390 - sold

Offline Prafeston

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Re: 1981 SX/4 transmision swap
« Reply #4 on: January 10, 2016, 11:20:26 AM »
I don't really have any experience with it, but from what I've heard the 5th gear on the T5 is basically useless. So maybe it's a good think you just had the SR4 rebuilt. Glad it's back on the road!
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1983 AMC Eagle SX/4 - Penny

Offline priya

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Re: 1981 SX/4 transmision swap
« Reply #5 on: January 10, 2016, 11:28:08 AM »
Quote from: Prafeston on January 10, 2016, 11:20:26 AM
I don't really have any experience with it, but from what I've heard the 5th gear on the T5 is basically useless.

Useless in what way?
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Offline Prafeston

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Re: 1981 SX/4 transmision swap
« Reply #6 on: January 10, 2016, 11:49:06 AM »
I've heard that the 5th gear can basically only be used at speeds over 70 on flat ground or going downhill. Like I said, I have no experience with this I just recall others talking about it.
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1983 AMC Eagle SX/4 - Penny

Offline johnbendik

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Re: 1981 SX/4 transmision swap
« Reply #7 on: January 10, 2016, 12:42:44 PM »
Don't know about the SX/4, but on my wagon (258 with the 5-speed), I routinely shift into 5th at around 55 mph.  Works pretty well.

JB
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1984 Eagle Sportwagon
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Offline amcman73

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Re: 1981 SX/4 transmision swap
« Reply #8 on: January 10, 2016, 01:03:30 PM »
Yeah with the little Iron Duke does alright but it for sure doesn't have the pull of what the  258 does.
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Offline johnbendik

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Re: 1981 SX/4 transmision swap
« Reply #9 on: January 10, 2016, 01:42:43 PM »
Ah!  My mistake... I didn't realize that we were talking about the 4 cylinder.

JB
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1984 Eagle Sportwagon
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Offline carnuck

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Re: 1981 SX/4 transmision swap
« Reply #10 on: January 17, 2016, 11:13:25 PM »
It depends on the gears and tire size whether 5th is useful or not.
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