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| 3800 SC Manual Transmission Swap (Page 1/1) |
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GWSFieroGT
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JAN 26, 08:46 PM
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Just curious (at the moment, anyway) - is there a common 3800 SC/manual transmission swap?
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MstangsBware
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JAN 26, 08:57 PM
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| quote | Originally posted by GWSFieroGT:
Just curious (at the moment, anyway) - is there a common 3800 SC/manual transmission swap? |
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Yes
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jonathan2014
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JAN 26, 10:44 PM
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| quote | Originally posted by GWSFieroGT:
Just curious (at the moment, anyway) - is there a common 3800 SC/manual transmission swap? |
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It how I did mine and I love it!
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mitchjl22
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JAN 27, 12:13 AM
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FIEROFLYER
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JAN 27, 11:13 AM
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Most of the manual swaps are using the Getrag 5 speed that came in the Fiero or the V6 4 speed also from the Fiero. A better option is the F23 manual 5 speed which has now been done many times or the F40 6 speed which is a bit more involved but still able to be done. Dan ------------------
DARN Cars now open with
Over 30 years wiring experience between cars and trade as an avionics technician in both Canadian Air Force and civilian aviation.
Over 25 years experience building and modifying cars.
Over 10 years of full Fiero engine swaps and harnesses building and still going.
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Monstertone
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FEB 19, 02:20 PM
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Regarding the 87/88 Fiero 5 speed transaxle, aka Muncie/Getrag 282 MG2. The common shortcomings that always come up when mating this transmission to the 3800 is, it was never designed to take the amount of torque the 3800 is capable of producing. (repeated off the line dumping the clutch) The alternatives usually recommended are either the Fiero Getrag 4 speed, the F-23, or the F-40. While the latter two are excellent trannie's, they involve a lot more money than the application of a little common sense and keeping the 282 5 speed.
I found these figures on gears ratios for Muncie/Getrag Fiero 5 speed transaxles.
Manual Transmission Gear Ratios
Year ____Style __Code Axle 1st 2nd 3rd 4th 5th rev.
1988 4cyl 5 speed MT2 3.35 3.73 2.04 1.45 1.03 0.74 3.50
1988 V6 5 speed MG2 3.61 3.50 2.05 1.38 0.94 0.72 3.41
OK, this may either sound like a dumb question or, a too good to be true question. The question is, are the final drive gear sets interchangeable? Upping the final drive ratio from 3.61 to 3.35 in the MG2 Tranny would result in approx 9% taller final drive ratio. If this is possible, why has no one done it? Like said, sounds too good to be true. For a 3800SC swap having more than enough low end torque, it would not only offer lower rpms at highway speeds, but lessen the stresses fed back thru the drive train in the lower gears.
And, if this IS possible, since I am facing a rebuild of my 282 anyway, should anyone have that 3.35 final drive gear set laying around gathering dust, I sure would be interested in taking it off your hands.  Please PM me with any offers.[This message has been edited by Monstertone (edited 02-19-2020).]
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OntarioKev
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FEB 19, 05:56 PM
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6 year revival
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hnthomps
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FEB 19, 09:13 PM
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I still have operational Getrag 282 transmissions mated with 3800 SC Series II and III engines for at least six years with no issues.
Nelson
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Spoon
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FEB 20, 08:20 PM
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| quote | Originally posted by GWSFieroGT:
Just curious (at the moment, anyway) - is there a common 3800 SC/manual transmission swap? |
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Yes. Look in the archives and you will find plenty. 3800 SC/manual transmission swaps are not uncommon.
These have been done with 4 spd, 5 spd and 6 spd manual transmissions.
Spoon
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"Kilgore Trout once wrote a short story which was a dialogue between two pieces of yeast. They were discussing the possible purposes of life as they ate sugar and suffocated in their own excrement. Because of their limited intelligence, they never came close to guessing that they were making champagne." - Kurt Vonnegut
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