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05-13-2017, 12:08 PM | #261 | |
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Re: '66 Malibu N/SA
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05-13-2017, 03:10 PM | #262 |
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Re: '66 Malibu N/SA
I don't really see anything wrong with the driveshaft. It pulls back 1 1/16" from fully inserted into the trans. And it's a 3 1/2" shaft. Maybe there's just a problem with the balance? There is room to go even larger on the shaft.
Here's how it looks installed. There's a little over a half inch of output shaft protruding from the transmission. Last edited by Dave Muller; 07-08-2017 at 05:32 PM. |
05-13-2017, 04:18 PM | #263 |
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Re: '66 Malibu N/SA
That's plenty big for the shaft.You could use a stock driveshaft in that car.
If you've got time, I'd take it to Phx rack and axle , north of the airport. See Bernie. Have him check runout and balance. He's the best. Maybe it's the camera angle, but I don't see any down angle on the U-joint.
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05-13-2017, 05:45 PM | #264 |
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Re: '66 Malibu N/SA
You can't really tell from that picture.
I just got the slicks dynamically balanced, and the prior job was done with clip-on weights on the inside only. This time they're stuck on in the middle of the wheel. I have three days, I'll check into that Mark, thanks for the tip. |
05-13-2017, 10:12 PM | #265 |
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Re: '66 Malibu N/SA
We've always bubble balanced our tires ourselves and use stick on weights in the inside (duct tape) for additional security. Never had a problem. The two times we experienced vibrations at speed it was the driveshaft. Have it rebalanced by a shop that can spin it fast enough. I took one to a local shop and had it balanced and still had a vibration. Mark Williams told.md you have to find a shop that can turn it 10k I believe is the number they gave me. I did that and no problem.
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Ed Carpenter 2005 Chevy Cobalt A/SM Race Engine Development Last edited by Ed Carpenter; 05-13-2017 at 10:19 PM. |
05-13-2017, 11:40 PM | #266 | |
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Re: '66 Malibu N/SA
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But , if you can get the wheel and tire under the safety hood, it's good way to check for wheel runout or a defective or improperly mounted tire.
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05-14-2017, 11:02 PM | #267 |
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Re: '66 Malibu N/SA
Here's a couple of pictures from my test session, courtesy of Jerry Hutchcroft, of Roddin' & Racin' magazine.
Last edited by Dave Muller; 07-08-2017 at 05:34 PM. |
05-15-2017, 11:53 AM | #268 |
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Re: '66 Malibu N/SA
Great looking car!
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05-15-2017, 08:57 PM | #269 |
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Re: '66 Malibu N/SA
I took the driveshaft in to Bernie today and he found .019" of run-out. He straightened and rebalanced it while I waited; didn't even use up my whole lunch hour. I'm very optimistic at this point.
I also hope to have enough ballast in to remove the headers. Oops--I meant remove the mufflers. My fingers type faster than my brain thinks sometimes! Last edited by Dave Muller; 05-16-2017 at 02:02 AM. |
05-16-2017, 11:54 AM | #270 |
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Re: '66 Malibu N/SA
Dave, You found that rulebook section on ballast for Stock Elim.?
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