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Why is a c3 engine not centered?

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Old Apr 28, 2013 | 05:53 AM
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Default Why is a c3 engine not centered?

Maybe an obvious question but i read all these stories about a c3 not having its engine in the center of the car, but offset a couple of cm (inches?) to the passenger side. And is this also the case for the entire drive train? (tranny, main driveshaft, diff?)

How much is the actual offset anyway?

Why is this? A V8 is one of the most symmetric engines on the planet so i can't figure out why GM would do it besides making room for the steering box, but if that was the issue couldn't they think of another solution?

Not that i am planning a huge blower on my '80 basket case but it just seems strange from an engineering point of view.

Thanks for clearing my head

Last edited by rene040269; Apr 28, 2013 at 05:56 AM.
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Old Apr 28, 2013 | 06:48 AM
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Hi,
This has puzzled more than a few people!
I believe the offset driveline has to do with the differential needing to be centered between the rear wheels, (same length half shafts), and thus the differential yoke not being centered in the car.
Regards,
Alan
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Old Apr 28, 2013 | 10:01 AM
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Ok, that was certainly not the first idea that popped up in my head. Could they not achieved that with a slightly tilted drive shaft, those swivable yokes should be able to handle a small angular displacement i guess? I have seen drive shafts in heavy machinery with angles as far as 15 degrees or more.
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Old Apr 28, 2013 | 10:34 AM
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Bout every car Ive seen is off center. Dont want a perfectly straight line for the Ujoints not sure if I explained that correctly. Dont worry about it.
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Old Apr 28, 2013 | 10:38 AM
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I read somewhere that it was done to provide a little more space in the driver's footwell which, we all know, is cramped even with the extra inch.
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Old Apr 28, 2013 | 11:27 AM
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The engine offset helps keep the car balanced to offset the weight of the driver, steering box and master cylinder.
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Old Apr 28, 2013 | 11:32 AM
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Does it matter?
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Old Apr 28, 2013 | 11:33 AM
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My understanding is similar to both Mr. BKbroiler and Mr. Larrywalk...that it was a matter of balancing the weight of the car side-to-side without a passenger. As well as the extra inch of much needed footroom.

Funny thing is that, when I was cutting some El-Cheapo floormats for my 2012 F250 (can't spring for the WeatherTech's yet), I trimmed LOTS of flab off the passenger's side mat, while the driver's side mat just set right in without any modification. HUGE difference in driver vs. passenger footroom.

I don't think the Scorpion engine in my F250 is offset (of course I haven't measured it...), but they definitely made some changes to give the driver more room to dance in. In my truck, definitely not for weight. But for driver comfort.

And how else would they expect us to stick our enormous heads in there to change the fuses without that extra inch? Tough enough already.
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Old Apr 28, 2013 | 11:34 AM
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All but one of the myths have been quoted so far as well as the real answer.
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Old Apr 28, 2013 | 12:14 PM
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Originally Posted by Mike Ward
All but one of the myths have been quoted so far as well as the real answer.
Are you referring to it being a Masonic conspiracy? That's my favorite theory.
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Old Apr 28, 2013 | 12:26 PM
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Originally Posted by rcread
Are you referring to it being a Masonic conspiracy? That's my favorite theory.
OK, I meant there were TWO myths.
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Old Apr 28, 2013 | 01:37 PM
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Ok, and the real answer is???
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Old Apr 28, 2013 | 06:07 PM
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Originally Posted by larrywalk
The engine offset helps keep the car balanced to offset the weight of the driver, steering box and master cylinder.
this makes the most sense
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Old Apr 28, 2013 | 06:09 PM
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Originally Posted by LS4 PILOT
this makes the most sense
Then why did they put the battery on the driver's side?
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Old Apr 28, 2013 | 06:23 PM
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Originally Posted by BKbroiler
Then why did they put the battery on the driver's side?
Cause my C2 66 BB battery blew up in my face , from the heat one hot august day before most of you were born.. It was to o close to the BB exhasut manifold. I was lucky not to sustain injuries nor did the other gentleman assisting me that day.

I think it was dangerous and horrible location and the weight front to back is what Chevy I think said.
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Old Apr 28, 2013 | 07:42 PM
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Originally Posted by LS4 PILOT
this makes the most sense
But is not the correct answer.
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Old Apr 28, 2013 | 07:54 PM
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Originally Posted by BKbroiler
I read somewhere that it was done to provide a little more space in the driver's footwell which, we all know, is cramped even with the extra inch.
That's what I read (and not in an Alex Jones book)...except this was done on the C2-and the C3 just inherited it...

Richard
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Old Apr 28, 2013 | 07:58 PM
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Originally Posted by LS4 PILOT
Cause my C2 66 BB battery blew up in my face , from the heat one hot august day before most of you were born.. It was to o close to the BB exhasut manifold. I was lucky not to sustain injuries nor did the other gentleman assisting me that day.

I think it was dangerous and horrible location and the weight front to back is what Chevy I think said.
I wasn't comparing the battery location to under the hood. I meant why didn't they put it on the passenger side, behind the seat if they were so concerned about side to side weight equalization.
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Old Apr 28, 2013 | 08:07 PM
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Originally Posted by Mike Ward
But is not the correct answer.
Alan 71 is the winner? mike...
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Old Apr 28, 2013 | 08:08 PM
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it is offset to achieve proper drive-line phasing.
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