Home page
SPONSOR AD

Topic: Automatic to manual conversion

in Forum: C3 Driveline Components


Automatic to manual conversion

Posted: 6/24/11 1:07pm Message 1 of 10
Former Member
Send PM
Raynham, MA - USA
Joined: 6/24/2011
Posts: 4
Vette(s): 76 L-82
I have a 76 L-82 with an TH400 today.

I want to get a 5 speed manual transmission.

So far looks like it's going to cost me $4000 to get a new RS400 with the conversion kit.

Anyone done this for less? Any advice appreciated.





SPONSOR AD:: (Our Sponsors help support C3VR)

Automatic to manual conversion

Posted: 6/25/11 1:55pm Message 2 of 10
Profile Pic
Lifetime MemberLifetime Member
Send PM
Indianapolis, IN - USA
Joined: 9/3/2006
Posts: 2429
Vette(s): Silver 1974 Convertible - L82 4 speed Low miles (was only 8,900 when I bought it in March 2006) - Now 54K miles. Original owner bought it as an investment for son's college expenses. 2008 Jetstream Blue Convertible
I don't know details, but I have heard that transition is VERY difficult and very expensive.  The hardest part is getting a place to put the clutch pedal


I wanted a Corvette my whole life, but I never dreamed of all the wonderful people I would meet because of it!


����� States Visited Map

target=_blank>Click for another pic!���� And yet another!

Automatic to manual conversion

Posted: 6/25/11 2:04pm Message 3 of 10
Profile Pic
Lifetime MemberLifetime Member
Send PM
spicewood, TX - USA
Joined: 9/13/2009
Posts: 72
Vette(s): Sold them Both
My understanding is that Keisler has the best Kits for conversion. Including a hydraulic Clutch setup.  Not sure how painless it is, but I have only heard that it is reasonable.



 

Automatic to manual conversion

Posted: 6/26/11 6:52am Message 4 of 10
Former Member
Send PM
Raynham, MA - USA
Joined: 6/24/2011
Posts: 4
Vette(s): 76 L-82
Keisler quoted me $4000+ for the transmission and kit that includes everything I need.

I'm also looking at a Muncie M20 4 speed and kit for the conversion. I can get this done for under $1800. Guess my concern is not having a hydraulic clutch. but it may be fine.:-)

Others have done this but most seem to go with the TKO 500 or TKO 600 route.



Automatic to manual conversion

Posted: 6/26/11 11:44am Message 5 of 10
Profile Pic
Standard Member
Send PM
Vancouver, WA - USA
Joined: 8/25/2005
Posts: 869
Vette(s): 1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
If you go with the 4 speed option you may consider using a BW Super T-10 which is stock for your '76. It would be newer and less likely to have been sitting behind a high torque monster motor for most of it's life.  Seems like there's debate on other sites about which one reigns supreme but a good guess would be they're both going to be OK for the majority of our engines.  

But, if money were no object, I'd go with the 5 speed - sure would be nice to have that extra gear for cruising at 70 mph.  Someday I may even go that route myself.    




 

1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.

Automatic to manual conversion

Posted: 6/26/11 5:28pm Message 6 of 10
Profile Pic
Former Member
Send PM
York, PA - USA
Joined: 5/18/2010
Posts: 1518
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
Really if you can..put the 5 speed in..going thru all that trouble for a 4 speed wouldn't be worth it to me..but you may have 336 gears in the back so it may not be that bad for top end..and mileage..also..have you thought of making your 400 a full manual?? Only the cost of the kit and some time on the valve body and your bangin gears?? Just a thought

Rich



My first parade at Carlisle 2010

Automatic to manual conversion

Posted: 6/26/11 5:37pm Message 7 of 10
Former Member
Send PM
Raynham, MA - USA
Joined: 6/24/2011
Posts: 4
Vette(s): 76 L-82
Yes, I have 3:36 gears.

As for the 5 speed I agree. just too much money for me. I have a way to get into a M20 that was rebuilt 500 miles ago with everything i need for the conversion for about $1700.

A 5 speed and conversion kit is over $4000. Just too much for me right now. But I really want a manual.

As for making my TH400 a manual. Wow, never knew that was an option. Hmm, I'll have to research that. Have you done it or know what I need to do it?



Automatic to manual conversion

Posted: 6/26/11 5:50pm Message 8 of 10
Profile Pic
Former Member
Send PM
York, PA - USA
Joined: 5/18/2010
Posts: 1518
Vette(s): 1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top
Doing a full manual auto is a blast..the only bad part is no matter where the throttle is it will chirp gears..hits like a rock all the time..it runs full line pressure all the time..the shifter operates as usual..start in one up to drive and down shift also..you will need a rev limiter as you can shift into 1st gear going 80to mph..its been a while since I did one but loved it..there are other options out there that are not as extreme but add a huge amount of performance above stock..good ol gill younger made a good kit and B&M and others I have used..if your trans is in good shape it only takes dropping the valve body and drilling it and the spacer plate..now if it were mine I would put the money into the auto with new redline frictions and kolene steels..update a sprag and drum and you are good to go..these things are really easy to build and cheap to do..only really need a reverse drum tool and clutch pack tool to do the job..there are some good videos out there..should be able to do the whole job for around 600$..

Rich



My first parade at Carlisle 2010

Automatic to manual conversion

Posted: 7/1/11 8:26am Message 9 of 10
Profile Pic
Lifetime MemberLifetime Member
Send PM
Cadiz, KY - USA
Joined: 8/26/2002
Posts: 249
Vette(s): 74 Convertible
I have converted 3 cars.  While not a simple task, it is worth it.  Still have two of them, both with Keisler 5 speeds and wouldn't go back.  The hardest part is getting the dash out to install the clutch lever.  PM for discussion if you wish.


C3VR Life Member #4
NCM Life Member #994
Vietnam Helicopter Pilots Association Life Member

Automatic to manual conversion

Posted: 7/1/11 10:44am Message 10 of 10
Lifetime MemberLifetime Member
Send PM
Equinunk, PA - USA
Joined: 10/31/2007
Posts: 2466
Vette(s): 1972 conv, 4-speed, 350, 200hp, numbers match, rally wheels, war bonnett yellow w/white top. good condition, nice driver.
Confused I was under the impression that ALL turbo's had 3.08 rears. I guess that is not so now. At least from the factory.


in Forum: C3 Driveline Components


SPONSOR AD: (Our Sponsors help support C3VR)