4 speed conversion
Thread Starter
2nd Gear
Joined: Dec 2013
Posts: 2
Likes: 0
4 speed conversion
Does anyone have a list of parts that i need to convert my 1979 auto transmission to a manual 4 speed? Also is there a step by step process to do this conversion? Any help would be great. Thanks
Race Director
Joined: May 2006
Posts: 18,665
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Thread Starter
2nd Gear
Joined: Dec 2013
Posts: 2
Likes: 0
4 speed conversion
if you are going through the effort why not a 5 speed?
http://shiftsst.com/gm-corvette-c3-1968-1982
http://shiftsst.com/gm-corvette-c3-1968-1982
Race Director
Joined: May 2006
Posts: 18,665
Likes: 2,564
a rough list
4 speed transmission
Bell Housing
Shifter
All clutch linkages
Z Bar with reinforced Frame Bracket
flywheel
Driveshaft
Pedals
Throwout Bearing
Clutch
http://www.4speedconversions.com/68-...onversion.html
4 speed transmission
Bell Housing
Shifter
All clutch linkages
Z Bar with reinforced Frame Bracket
flywheel
Driveshaft
Pedals
Throwout Bearing
Clutch
http://www.4speedconversions.com/68-...onversion.html
Melting Slicks
Joined: Oct 2006
Posts: 2,938
Likes: 173
From: hebron IL
C3 of Year Finalist (appearance mods) 2019
Ball studs
clutch fork boot
shifter lower boot
reverse light switch
pressure plate bolts
flywheel bolts
clutch bushing
yoke
u-joints
there is more I am forgetting
clutch fork boot
shifter lower boot
reverse light switch
pressure plate bolts
flywheel bolts
clutch bushing
yoke
u-joints
there is more I am forgetting
Melting Slicks
Joined: Jun 2011
Posts: 3,114
Likes: 597
Things to decide. Hydraulic Clutch vs mechanical linkage. Once you know this step then the pedal conversion will fall into place.
Using a hydraulic kit requires possible additional changes to your pedal arrangement.
https://www.corvetteforum.com/forums...-corvette.html
I also tested a few 4 speed cars after my conversion and noticed a big difference in the shifting. The 4 speed cars shift like old cars, no spring loaded center gates, shifting throws are very long etc.
I am glad I didn't go with the easy 4-speed conversion, but the costs are much much higher.
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3rd Gear
Joined: Sep 2016
Posts: 3
Likes: 0
For speed conversion
I was looking at your post a couple of years ago and was wondering if you ever completed your 4 speed conversion on your car I am thinking about doing the same thing on my 1973
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
hi. new guy. welcome aboard. 2-1/2 year old thread. the guy you were asking hasn't been on here since jan. 2016. start a new thread after using the search function to find out as much as you can first. there is a metric s**t ton of info on 4-5-6 speed conversions. 5-speed makes the most sense. the Borg T5 is the most cost-effective way to go. any relation to Don?
3rd Gear
Joined: Sep 2016
Posts: 3
Likes: 0
hi. new guy. welcome aboard. 2-1/2 year old thread. the guy you were asking hasn't been on here since jan. 2016. start a new thread after using the search function to find out as much as you can first. there is a metric s**t ton of info on 4-5-6 speed conversions. 5-speed makes the most sense. the Borg T5 is the most cost-effective way to go. any relation to Don?
