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JThomas
03-31-2018, 01:39 PM
Does anyone know of a remedy to create a lower seat position in the C4? I have a '91 Corvette ZR-1 that I recently had the seats re-upholstered. The new foam/padding has caused me to lose what little headroom I had in the car.

I am looking for a solution to lower the seats in my car without compromising the padding or comfort of the seats.

Is there a way to remove the power seat mechanisms and possibly have the seats permanently mounted in the car? At 6'6" they need to be all the way back and as low as possible. I'm not concerned with resale of the car at this point or anyone else's comfort/ability to drive the car.

I have already removed the support straps under the cushions, but that is not enough. I'm looking for other solutions.

Thanks,

Joe

gbrtng
03-31-2018, 01:43 PM
Gurney bubble?

JThomas
03-31-2018, 01:46 PM
Gurney bubble?

Thanks but that doesn't fit the theme of this project.

secondchance
03-31-2018, 03:17 PM
Joe,

I think what can be done is to fabricate 2 (left and right) pieces, channel shaped, brackets that can be bolted to the floor in same location as the track. Then, seats can be bolted to the top of the track. Track total thickness when in the lowest seat position, based on my memory, is about 3-4 inches. Channel shaped bracket can 1-2 inches.
I'll hand sketch what can be done and email to you. You can talk to Dempsey - evolution motor sport, and have him fabricate the piece, paint and ship to you.
What is your Z model year?

https://www.google.com/search?q=c4+seat+track&client=safari&hl=en-us&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiou53wiJfaAhXnc98KHVH_CdkQ_AUIEigC&biw=1024&bih=672#imgrc=CYUNUeASyWwsqM:

JThomas
03-31-2018, 06:35 PM
Joe,

I think what can be done is to fabricate 2 (left and right) pieces, channel shaped, brackets that can be bolted to the floor in same location as the track. Then, seats can be bolted to the top of the track. Track total thickness when in the lowest seat position, based on my memory, is about 3-4 inches. Channel shaped bracket can 1-2 inches.
I'll hand sketch what can be done and email to you. You can talk to Dempsey - evolution motor sport, and have him fabricate the piece, paint and ship to you.
What is your Z model year?

https://www.google.com/search?q=c4+seat+track&client=safari&hl=en-us&prmd=sivn&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiou53wiJfaAhXnc98KHVH_CdkQ_AUIEigC&biw=1024&bih=672#imgrc=CYUNUeASyWwsqM:

My car is a 1991. I like your solution, but I thought for sure someone else had already been down this road.

-=Jeff=-
03-31-2018, 07:47 PM
Locobob had taken a manual seat track and made it lower as well, that could work for you

secondchance
03-31-2018, 07:57 PM
Locobob had taken a manual seat track and made it lower as well, that could work for you

Modify these?
That could work.

https://www.ebay.com/p/84-96-Corvette-C4-Manual-Seat-Track-Set-Left-or-Right-Tracks/658107292?iid=263100613780&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%2 6asc%3D44040%26meid%3D6d258449330d474791e2636907d0 8343%26pid%3D100005%26rk%3D3%26rkt%3D6%26sd%3D3817 23240548%26itm%3D263100613780&_trksid=p2047675.c100005.m1851

efnfast
03-31-2018, 09:02 PM
Joe, I assume you run with the Lexan roof. Its a little thinner than the solid top.

JThomas
03-31-2018, 10:47 PM
Joe, I assume you run with the Lexan roof. Its a little thinner than the solid top.

Absolutely! It gives me just a little more headroom.

XfireZ51
03-31-2018, 11:49 PM
Absolutely! It gives me just a little more headroom.

That was going to be my suggestion.
BTW Joe, speaking of extra room, I’m trying to get a group buy together for the Apsis D shape wheel. I know that would afford you some extra knee room and easier egress. Interested?
Full disclosure, I don’t know that Apsis would be interested but worth a try.

Z51JEFF
04-01-2018, 12:41 AM
Years ago I put a 4-speed in a 64 Nova I had and I made some seat extensions that allowed me to put the seat back a little further,what I made is basically what you would need. I took some 1/2 inch thick aluminum that was 2 inches wide and a few inches longer than the seat mounts. I had some counter sunk threaded allen bolts come up from the bottom of the bracket to the seat frame and then bolted the bracket to the floor. I’ve got a picture I can send in an email.

JThomas
04-01-2018, 12:05 PM
That was going to be my suggestion.
BTW Joe, speaking of extra room, I’m trying to get a group buy together for the Apsis D shape wheel. I know that would afford you some extra knee room and easier egress. Interested?
Full disclosure, I don’t know that Apsis would be interested but worth a try.

Yes Dom, I would be interested. I don't need the carbon fiber treatment, I just want the D shaped wheel with a "standard" leather wrap. That would fit my theme.

XfireZ51
04-01-2018, 12:56 PM
Yes Dom, I would be interested. I don't need the carbon fiber treatment, I just want the D shaped wheel with a "standard" leather wrap. That would fit my theme.

Yeah, I don't need the CF either.

Z51JEFF
04-01-2018, 08:09 PM
Joe you get my email?

JThomas
04-01-2018, 09:54 PM
Joe you get my email?

Yep, got it. Easter Sunday, responding a little slow.:handshak:

Z51JEFF
04-01-2018, 10:55 PM
Yep, got it. Easter Sunday, responding a little slow.:handshak:

Let me know if I can help with this,I might have some T6061 aluminum but not sure on what size. If anything you get the material,get it to me and I can whip these up.