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Tyler Townsley
Senior Member


186 posts [100%]
Nichols Florida

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 C 5 Basic seats in a C 3 Howto.Reply to this post

Well one can put the base C 5 seats in a C 3. I bought a set from a C 5, you get one manual seat and one power seat. First thing you have to drill out the rivets for the frount bracket. Photo with bracket.
seat_1.jpg

Rivets drilled out.
seat_7.jpg

You then center the manual operated seat in the passanger side on the floor making sure you can operate the lean back lever and drill holes for the bolts. I drilled the two frount and inner side rear. (you will see why when you get it in the car)
Bolt it down and you are done with the pass. side.
seat_3.jpg

Note the seat height compaired to the stock driver seat.
seat_4.jpg

If you use a manual seat on the drivers side then the install would be the same. However I chose to install the power seat which requires two notches in the floor. Note the cut on the tunnel side was too wide it can be the same as outside. One also has to cut the frount lip of the brace that runs under the floor. I plan to patch the holes from underneath later. The best way to get a feel for where to cut is to put the seats with one bolt in with a in or so play in and operate the controls which will leave scratches on the floor.
seat_6.jpg

When you put the seat in to drill the holes use the outer frount stock hole and the inner frount track hole and the position will be about right.
seat_8.jpg

Should look like this.
seat_5.jpg

Caviat is your height. I am 5 6 and it was comfortable for me but I am still going to swap out the 15 in wheel for a 13 1/2 aftermarket for a little extra clearance. This car does not have tilt/telly

Tyler



ylose
Senior Member




778 posts [100%]
East Troy WI

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

Nice work.....I love the C5 seats....
_______

1978 L-48 Custom Corvette Coupe full RPM package
estimated over 400HP/400TQ via desktop dyno

Click Here <----> Home Page, Pictures and Specs <-----> Click Here

Smokehouse69
Senior Member




3996 posts [100%]
Victoria TX

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

Very impressive! Those are some really nice seats. Make sure you post some pictures after the rest of the interior is installed. I know it is going to look really good!

_______


1969 Rallye Red 355, Vortec Heads, Comp XE262 Cam, 650 Holley Double Pumper, TH400 My Red 'Vette
Da Smokehouse
Steve Eddleman
My Homepage

Corellian Corvette
Senior Member


1003 posts [100%]
Kirkland WA

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 Re: C 5 Basic seats in a C 3 Howto. (Smokehouse69)Reply to this post

One real quick question I was unclear about:

With the stock seats, are you drilling holes in the C5 seat bracket, or are you drilling holes in the floorpan of the C3 and putting new holes below?
_______

1999 "Corellian Corvette"
Outside: M6. Z51. Halltech TRIC w/ Cobra CF. Aluminum MAF. Carbon fiber rail covers. CAGS bypass.
Cool Blue upgrade. Corsa "Pace Car" (New Tips) w/ X-Pipe. Y2K Painted Rims. Firehawk RFT's.
Inside: Valentine 1. In-Dash CD w/ 12 CD changer. Custom Lloyd Mats.
Dynoed: 323 HP / 337 TQ (before Halltech and Exhaust)

1973 Stingray
Silver/Black. 350ci L48. TH400 Auto. Aluminum Wheels. Kenwood stereo w/ CD Changer. Power Antenna.
Edelbrock Performer intake. No emissions. 1.60 roller-tip rockers. 2.5in duals w/ Flowmaster mufflers.

ME
MY WEBSITE
THE CORELLIAN CORVETTE
"...she'll do .5 past light speed!"

vettedan
Senior Member




515 posts [100%]
Bonney Lk, WA. USA

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

I would like to do this mod!
Dan
_______

1976 Stingray W/'95 LT1/4L60E 16" Torq Thrust II W/Yoko 255/50, Vette Brakes front mono spring suspension system with 1-1/8" front sway bar & 3/4" rear sway bar. VETTEWORKS C3 Harness Bar and fire extinguisher bracket, Autometer 5" Pro Comp Electronic Speedometer/tach and VAT alarm, Blaupunkt San Jose MP41 MP3/CD player. MSD 8.5 plug wires, Part Number for the American Racing wheels I have is 5056861. Best 1/4 mile so far is 13.600 sec @ 100.25 MPH.
GET A C3 FIRE EXTINGUISHER/BRACKET FOR YOUR VETTE!!!!! NEW!!! SEE THE VETTEWORKS C3 HARNESS BAR!!!!Go to my web page for details @
http://www.vetteworksonline.com


Alwyn678
Senior Member




6839 posts [100%]
Roswell,Ga

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 Re: C 5 Basic seats in a C 3 Howto. (vettedan)Reply to this post

GREAT JOB........Looks Fantastic...I too would luv to do this
_______

74 Stingray Convertible- 355..041 Heads(64cc), Blue Racer 284 Cam, Edel. Performer, Holley 750 DP,10.5:1 compression.TCI BREAk-A-WAY 2400 Stall Converter,Dynomax Headers.Delta 40 Flowmasters
SAAB Intercooled Turbo 900 Conv.... Daily Driver
69 Jaguar XKE VERT
[http://hobbystage.net/corvette/roadster

71roadster
Senior Member




488 posts [100%]
Fremont, ca, us

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

Is the base of the c5 seat higher then the base of the c3 seat (do you sit higher)? Does it go back as far as the c3 seat or are you forced to sit closer to the wheel?

Also, how is your roll bar mounted? I am planning one and would really like a picture if you could. Does it clear the soft top mechanism?

Thanks
Chris

Chris O'
Senior Member


405 posts [100%]
Brisbane, Australia 1977 Coupe

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

Well done!
74-Roadster
Senior Member




543 posts [100%]
Fort Worth TX

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 Re: C 5 Basic seats in a C 3 Howto. (Corellian Corvette)Reply to this post

quote:
With the stock seats, are you drilling holes in the C5 seat bracket, or are you drilling holes in the floorpan of the C3 and putting new holes below?



I could use a little clarification as well, what is bolting to what and in what holes?

And how much higher do you sit vs the C3 seats? Can you measure that for us? Pleasssssssse?

I'm so curious because I have a pair of C5 seats (sitting in a BR closet), both power and I'm planning on rebuilding the whole floorboard 2"-3" lower and providing inlayed nuts in the C3 floorboard for the C5 track bolts. But don't intend to undertake that task until the body is off.

Thanks
_______

Meet Daphne



1974 two top car, L48, AC, PS/PB, TT & some temporary wheels, lots to come . . . Stay tuned!!

We can customize her, we have the technology. . .

Tyler Townsley
Senior Member


186 posts [100%]
Nichols Florida

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 Re: C 5 Basic seats in a C 3 Howto. (Corellian Corvette)Reply to this post

I used the holes in the C5 seat track track as a guide to drill the holes in the floor pan. Used new bolts/nuts/washers and a 2x2 1/4 in plate on the underside of the floor pan as backing. Since I retained the stock floor mounted belts I am not worried about it coming through the floor in a crash.

Tyler

Tyler Townsley
Senior Member


186 posts [100%]
Nichols Florida

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 Re: C 5 Basic seats in a C 3 Howto. (71roadster)Reply to this post

If you look at the picture with the new and old seat you see that the manual seat sits at the same level as the stock seat IF you drill out the rivets that hold the frount bracket. (THEY ARE HARD METAL). You do not have to do major surgery to the floor pan to make the Base electric seat fit. I do not know if the 6 way seat has more under seat levers than the base seat. As you can see it takes 2 cuts about 2 in wide and 4 in long in the pan and a 2x2 cut in the underpan brace for each slot. When you turn the seat over and operate you will see the arm that pivots which is what the slot is for. As near as I can tell the seat at its lowest point is at most an inch higher in frount which is why I plan on using a 13 in stearing wheel. The back is probably 2 in thicker than the stock seat so if you are tall you might wait and try one done by someone like me to see if it fits in the max rear position. The rearward seat travel is stopped by the back of the seat hitting the bulkhead just as it is for the stock seat.

The roll bar is welded to the frame and was done before I got the car, will try to make pictures next time I go to the paint shop which is where it is waiting for the guy to get done. I have to put in the six speed and 3.08 rear and hope to drive it to Monteray in Aug from Fl.

Tyler

Mike69
Senior Member




3419 posts [100%]
Voorhees NJ

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 Re: C 5 Basic seats in a C 3 Howto. (Tyler Townsley)Reply to this post

Great Work!!!!! I shyed away from doing this this past summer and now I'm !!!! Looks awesome!!!! I'll have to put it back on my list of things to do!!!


_______


Mack76
Senior Member




2242 posts [100%]
Lufkin, Texas

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 Re: C 5 Basic seats in a C 3 Howto. (Mike69)Reply to this post

I could live with a manual seat on the driver's side. Can you get one or would you use a passenger's side seat on the driver's side?
_______

Hangin' On & Hangin' In
Mack76
76ZZ4

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