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-   C4 Tech/Performance (https://www.corvetteforum.com/forums/c4-tech-performance-48/)
-   -   Sequential shift (https://www.corvetteforum.com/forums/c4-tech-performance/4292932-sequential-shift.html)

PoprocksC4 07-06-2019 08:25 PM

Sequential shift
 
A tranny without a clutch? LOVE to replace my A4. Anybody done this swap?

dizwiz24 07-06-2019 10:04 PM


Originally Posted by PoprocksC4 (Post 1599708165)
A tranny without a clutch? LOVE to replace my A4. Anybody done this swap?

Would love to know if this has been done.

like if someone has put in an SMG clutchless manual paddleshift in their c4 or c4 zr1

65Z01 07-07-2019 01:53 AM

Can you just install a TransGo shift kit and set it up for manual shifting??

STL94LT1 07-07-2019 04:26 AM

https://www.lgmotorsports.com/corvet...nsmission.html

Robban_C 07-07-2019 05:45 AM

A C4 with a Lenco transmission:

This car is for sale nuw, but without engine, transmission etc.
No, it´s not my car but I have bought the turbo etc from it.

PoprocksC4 07-07-2019 11:04 AM

Whoa, At $28k!? Sorry i asked. Its cheaper to buy a C6 w/ a manual. But thanks for the info.

dizwiz24 07-07-2019 11:10 AM


Originally Posted by PoprocksC4 (Post 1599710367)
Whoa, At $28k!? Sorry i asked. Its cheaper to buy a C6 w/ a manual. But thanks for the info.

A C4 with this type of transmission you ask about is better than a C6 !

1985 Corvette 07-07-2019 12:44 PM

Roadkill had an episode with a Jericho clutchless 4 speed installed in a project. They got a kick out of it. I never searched for it too hard but I see their transmissions out there for 3 grand or so. Maybe can find one on eBay or racing junk’s for sale site. Sequential shift sounds fun until you realize the “cheap” end of it is 28K. I say cheap because I’ve seen them going for over 50 grand by some suppliers!

psychodiagnostik 07-07-2019 12:52 PM

I've thought about this as well for my '93A4. I have 3.73s & rebuilt 700r4 with shift kit. I like to manually shift it, & I chose to keep a converter with factory stall because it feels more "connected" when driving on backroads & it also barks tires on upshifts even at low speed.

What I've thought about is a ratchet shifter like a B&M. I've seen a couple of C4s with this, it takes some interior modding but it looks really nice with the knob up close to the steering wheel, like a racecar. I think this, with a nice built 700, shift kit, & nice shifter might give you the control & engagement you want when driving without going nuts on a Jericho or whatever.

You can also do manual valve body on the auto but I've heard not so good things about them when used in a street-driven daily or semi-daily car. You can get decent manual control with a shift kit.

ChumpVette 07-07-2019 09:57 PM


Originally Posted by PoprocksC4 (Post 1599710367)
Whoa, At $28k!? Sorry i asked. Its cheaper to buy a C6 w/ a manual. But thanks for the info.

What did you expect it to cost?

PoprocksC4 07-08-2019 08:03 AM

I had no clue what to expect as far as cost but I was shocked to find a price tag that high. I guess "if you have to ask...." applies here. I like the idea of looking for used on racing junk. For now I'll continue shift my A4 "manually" when i want to get a little "bark" out of the tires.
https://cimg2.ibsrv.net/gimg/www.cor...0f5c0dc2ba.jpg

vader86 07-08-2019 02:14 PM

I've looked into it in the past, it has been done a few times on here. It was always too custom, nothing really off-the-shelf, and prohibitively expensive to me.

64Scout 07-08-2019 08:21 PM

4l60e and paddle shifter.
https://www.summitracing.com/search?...e%20shifter%20

JoeNova 07-08-2019 09:03 PM

Paddle shifted 60e is definitely the easiest route.

dizwiz24 07-08-2019 09:45 PM


Originally Posted by JoeNova (Post 1599720089)
Paddle shifted 60e is definitely the easiest route.

Is that a robot clutch slave cylinder (like bmw smg) or a slushbox with torque converter

ChumpVette 07-08-2019 09:50 PM


Originally Posted by dizwiz24 (Post 1599720368)
Is that a robot clutch slave cylinder (like bmw smg) or a slushbox with torque converter

Its just like the garbage GM used with the 2006 Corvette A6 Trans. It will still shift slow.

gman35 07-08-2019 09:59 PM

hurst his and hers shifter
 

Originally Posted by psychodiagnostik (Post 1599710942)
I've thought about this as well for my '93A4. I have 3.73s & rebuilt 700r4 with shift kit. I like to manually shift it, & I chose to keep a converter with factory stall because it feels more "connected" when driving on backroads & it also barks tires on upshifts even at low speed.

What I've thought about is a ratchet shifter like a B&M. I've seen a couple of C4s with this, it takes some interior modding but it looks really nice with the knob up close to the steering wheel, like a racecar. I think this, with a nice built 700, shift kit, & nice shifter might give you the control & engagement you want when driving without going nuts on a Jericho or whatever.

You can also do manual valve body on the auto but I've heard not so good things about them when used in a street-driven daily or semi-daily car. You can get decent manual control with a shift kit.

I am in the process of fitting a 4 speed Hurst his and hers shifter into the console of my 1987 C4. It will be the first one that I have ever seen done. It has actually been pretty easy so far.

vader86 07-09-2019 08:39 AM


Originally Posted by dizwiz24 (Post 1599720368)
Is that a robot clutch slave cylinder (like bmw smg) or a slushbox with torque converter

Its still a GM tranny, and it still shifts slow. You want a robot clutch, better look elsewhere or design one.

JoeNova 07-09-2019 08:48 AM


Originally Posted by ChumpVette (Post 1599720391)
Its just like the garbage GM used with the 2006 Corvette A6 Trans. It will still shift slow.

A shift kit and a trans tune and it will shift much faster.
Paddle shifters can be programmed to control the 2 shift solenoids very quickly for upshift/downshift.

ChumpVette 07-09-2019 11:13 AM


Originally Posted by JoeNova (Post 1599722034)
A shift kit and a trans tune and it will shift much faster.
Paddle shifters can be programmed to control the 2 shift solenoids very quickly for upshift/downshift.


PDK fast?

It's still a GM auto.


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