C3 Owners are off-center.... - CorvetteForum - Chevrolet Corvette Forum Discussion


C3 General
General C3 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

C3 Owners are off-center....

Reply
 
 
 
Thread Tools Search this Thread
Old 04-02-2005, 12:45 PM   #1
kdlp
CF Senior Member
Thread Starter
 
Member Since: Jun 2004
Location: Juneau AK
Posts: 553
Thanks: 0
Thanked 1 Time in 1 Post
Default C3 Owners are off-center....

There.... that oughta get some attention....

A buddy of mine recently put a supercharger (blower) on his small block and when getting ready to cut a hole in the hood realized that the engine in C3's (and maybe C2's as well since they share so many frame components, etc.) sits off the center line to the left by a couple of inches. If you haven't looked on your C3, notice that the frame member that holds the motor mount on one side is a different length on the other side.

For my buddy that means cutting a hole in his hood off centerline... something his **** self wasn't ready to accept until he figures out why. And to carry this a step further, he would like to know why C3's are built this way.

I think I've read something about this before but with the inefficient search engine I wasn't able to find anything. So what's the story? Better handling? Better balance? Offsetting engine torque? More room for fat-bottomed girls on the passengers side? Zora was slightly to the left politically?

Anyone? My **** buddy refuses to cut until he has a reason he feels makes sense..... and in the meantime his engine is getting wet... (but most of that is front the over-heating radiator while he waits for his "Be Cool" stuff to arrive.)

Thanks for any help....

kp
kdlp is offline   Reply With Quote
Old 04-02-2005, 02:10 PM   #2
mrvette
CF Senior Member
 
mrvette's Avatar
 
Member Since: Jul 1999
Location: Orange Park Florida
Posts: 59,595
Thanked 78 Times in 76 Posts
Default

I beleive the primar engineering problem was the requirement of IRS to have equal length 1/2 shafts, since they are acting as the upper arm in the suspension, serving dual purpose....
so to keep the suspension identical, the offset to the pass side of the entire drivetrain was required for the pinion gear to mate with the ring gear in the differential and the drive shaft to line up horizontally......with a solid axel rear that is not so much of a problem....
added in is the steering linkage, and other accessory space requirements....
also it's maybe not so bad a shift in the handling department as the weight of driver being ~170 lbs or so.....

GENE
mrvette is offline   Reply With Quote
Old 04-02-2005, 02:16 PM   #3
turtlevette
CF Senior Member
 
turtlevette's Avatar
 
Member Since: Feb 2003
Posts: 2,477
Thanks: 0
Thanked 1 Time in 1 Post
Default

Quote:
Originally Posted by mrvette
as the weight of driver being ~170 lbs or so.....

GENE

Damn,

170# driver??...... the other day someone talked about a 150# driver.

I gotta go on a diet.
turtlevette is online now   Reply With Quote
Old 04-02-2005, 02:40 PM   #4
69autoXr
CF Senior Member
 
69autoXr's Avatar
 
Member Since: Jan 2004
Location: Detroit MI
Posts: 2,669
Thanked 37 Times in 32 Posts
Default

Quote:
Originally Posted by mrvette

also it's maybe not so bad a shift in the handling department as the weight of driver being ~170 lbs or so.....

GENE
Not bad at all, I got my crossweights to 50% with less than two turns on the left rear spring bolt (raising), with me in the car (150 lbs).
69autoXr is offline   Reply With Quote
Old 04-02-2005, 03:29 PM   #5
chris75stingray
CF Senior Member
 
chris75stingray's Avatar
 
Member Since: Feb 2005
Location: Mesa AZ
Posts: 1,231
Thanks: 0
Thanked 0 Times in 0 Posts
Default

how much of the blower is sticking through? if the carb is above the hood line, then i would cut both sides evenly and then use the open side to run your fuel , vacuum lines etc.. If only an air scoop is going to stick through, you could probably cut the hole in the center and then modify the scoop to offset it .
chris75stingray is offline   Reply With Quote
Old 04-02-2005, 03:42 PM   #6
redwingvette
CF Senior Member
 
redwingvette's Avatar
 
Member Since: Aug 2001
Location: Waterford Mi
Posts: 3,387
Thanks: 0
Thanked 7 Times in 7 Posts
Default

C3's are not the only car with this condition. I took out a V6 and put in a V8 in a 77 Mustang II and it was the same way. That was the only way the motor and exhuast would stay clear of the steering componates.
redwingvette is offline   Reply With Quote
Old 04-02-2005, 04:05 PM   #7
Gordonm
CF Senior Member
 
Gordonm's Avatar
 
Member Since: Dec 1999
Location: Voorhees NJ
Posts: 18,264
Thanked 78 Times in 62 Posts
Default

Quote:
Originally Posted by turtlevette
Damn,

170# driver??...... the other day someone talked about a 150# driver.

I gotta go on a diet.
That was me. I have an advantage over some drag racing due to low body weight. Kind of makes up for my crappy reaction time
Gordonm is offline   Reply With Quote
Old 04-02-2005, 05:01 PM   #8
norvalwilhelm
CF Senior Member
 
norvalwilhelm's Avatar
 
Member Since: Nov 2000
Location: Waterloo ontario Canada
Posts: 11,876
Thanks: 0
Thanked 0 Times in 0 Posts
Default

They are all offset and I discovered how much 4 years ago when I too cut a hole in the hood for the blower. I carefully cut the hood to match the motor, I did not cut a big concentric hole and use the extra 2 inch opening on one side for the carb linakage and fuel lines. I feel this would look stupid.
Cut where needed and as little as possible.
norvalwilhelm is offline   Reply With Quote
Old 04-02-2005, 05:36 PM   #9
Let 'er eat!
CF Senior Member
 
Let 'er eat!'s Avatar
 
Member Since: May 2003
Location: Cocoa Beach FL
Posts: 579
Thanks: 0
Thanked 0 Times in 0 Posts
Default

you can hardly tell.......
Let 'er eat! is offline   Reply With Quote
Old 04-02-2005, 06:22 PM   #10
kdlp
CF Senior Member
Thread Starter
 
Member Since: Jun 2004
Location: Juneau AK
Posts: 553
Thanks: 0
Thanked 1 Time in 1 Post
Default

I don't know how much of the supercharger/dual quads, etc. is above the hood. Right now he's cutting on a cardboard template trying to get an idea of where to cut the hood. I've printed a few of the pics from the photo galleries here (including the one just above, thanks) to give him some ideas.

I'll try and post a pic of the finished project when it happens.

As for why the offset in the first place, the 1/2 shafts seems a reasonable explanaition to me.... let's see what he says....

thanks,

kdlp
kdlp is offline   Reply With Quote
Old 04-02-2005, 07:30 PM   #11
litevette
CF Senior Member
 
litevette's Avatar
 
Member Since: Nov 2002
Location: of mind
Posts: 2,371
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I'm 250 now. If I lose 50 lbs that should free up 5 h.p. Man I gotta stop drinking so much beer!!!
litevette is offline   Reply With Quote
Old 04-02-2005, 09:39 PM   #12
stingr69
CF Senior Member
 
stingr69's Avatar
 
Member Since: Mar 2004
Location: Little Rock AR
Posts: 3,483
Thanks: 0
Thanked 8 Times in 8 Posts
Default

Early Camaros have a variable offset. The big block is off-set to the passenger side while the small blocks are centered. This is for clearance around the power steering box. The side effects of the offset includes special BB shifter mounting brackets, special BB shifter linkage, special BB motor stands, etc. I guess it is not that unusual to have the powertrain offset.

-Mark.
stingr69 is offline   Reply With Quote
Go Back   CorvetteForum - Chevrolet Corvette Forum Discussion >
Reload this Page
  • C3 Owners are off-center....
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    Factory Tour Day #2 kevincol C7 General Discussion 18 07-25-2015 03:22 PM
    When You are Lucky Enough to get "That Guy" varkwso Autocrossing & Roadracing 31 11-06-2014 08:13 AM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump

    Sponsored Ads
    Vendor Directory

    All times are GMT -4. The time now is 08:12 PM.


     
    • Ask a Question
      Get answers from community experts
    Question Title:
    Description:
    Your question will be posted in: