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Username Post: 2-piece driveshaft angles        (Topic#239436)
629C1 Impala 
Forum Newbie
Posts: 6

Reg: 04-04-10
04-05-10 07:43 PM - Post#1893586    

Hi, I'm brand new here so please bear with me....
I've read and been told that it is best to treat the front shaft as if it is an extension of the tail housing therefore aligning it almost straight (1/2 degree) with the engine and trans.
Then to set up the rear shaft as if it was a one piece shaft.
Problem I'm experiencing is a slight shudder on take off. Harder I push the pedal the worse it is. I'd have to look at my notes but I believe I have all three right close to 1.5 now.
Car is a 62 Impala with a 4L60e so front shaft is shorter and rear has a complete adjustable 4-link which also made the rear shaft shorter.
Ideas??
Thanks!

 
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doubleE 
Valued Contributor
Posts: 3804
doubleE
Loc: Eagan MN
Reg: 06-02-03
04-06-10 04:24 AM - Post#1893691    
    In response to 629C1 Impala

Angle at the tailshaft does not need to be stright but should be the same angle as at the rear end.

One thing to check is the u-joint "phasing". A search on here should come up many hits on this subject.

Eric
Proud owner of My Blue 62 Impala SS


 
Lynn63 
"5th Year" Gold Supporting Member
Posts: 577
Lynn63
Age: 74
Loc: Vicksburg, MI
Reg: 02-07-09
04-06-10 09:11 PM - Post#1894153    
    In response to doubleE

Eric, you are dead on with the phasing issue. I took my driveshaft in to be shortened after I installed a 200-4R in my 63 and the shop person noticed the front shaft was "out-of-phase" (or so he thought). Not knowing I told him to do what he felt necessary so he put it "in-phase" and I developed a pretty bad vibration. After reading a post about phasing on CT I took it back to him, along with the page from the assembly manual and he fixed it. Vibration was gone after that.
Lynn
Lynn63
63 Impala SS
07 Silverado DMax Classic
99 Venture van


Progress so far...


 
629C1 Impala 
Forum Newbie
Posts: 6

Reg: 04-04-10
04-06-10 10:05 PM - Post#1894169    
    In response to Lynn63

The phasing is correct and the balancing has been done by the best....
Somebody in this "X-Frame" group surely must have dealt with the angles of these driveshafts??

 
bborc 
Member
Posts: 29

Loc: MI
Reg: 02-03-06
04-07-10 03:51 AM - Post#1894223    
    In response to 629C1 Impala

Hi 629c1. I had the same problem on my 62 impala. The shop manual shows how to set the angles if you have one if not do a search on here or google two peice drive shaft. I had that same chutter when first taking off and ended up Installing one of thoses polyurathane center bearings from inland driveshaft. I also had the driveshaft place put in a slip joint in the rear shaft. No more problems after that.If you need more info contact me at my e mail address in my profile

Edited by bborc on 04-07-10 04:09 AM. Reason for edit: No reason given.

 
bowtieollie 
ChevyTalk Subject Matter Expert
Posts: 21128
bowtieollie
Loc: See the USA in your Chevr...
Reg: 12-06-99
04-07-10 04:20 AM - Post#1894231    
    In response to 629C1 Impala

Hi 629,

Do a search on this topic within the 58-64 forums.

The topic has been addressed perfectly.
No sense in me rehashing the topic....
Bowtieollie
Chevytalk.com Moderator


 
629C1 Impala 
Forum Newbie
Posts: 6

Reg: 04-04-10
04-07-10 09:04 AM - Post#1894358    
    In response to bowtieollie

Thanks to both of you!!

 
61ragtop 
Member
Posts: 622

Age: 38
Loc: Langley B.C. Canada
Reg: 07-30-03
04-08-10 06:42 AM - Post#1894827    
    In response to 629C1 Impala

http://www.chevytalk.org/fusionbb/showtopic.php?ti...

 
bowtieollie 
ChevyTalk Subject Matter Expert
Posts: 21128
bowtieollie
Loc: See the USA in your Chevr...
Reg: 12-06-99
04-08-10 02:23 PM - Post#1895084    
    In response to 61ragtop

Hi 61,

Thank you very much for posting the link to that topic....
Bowtieollie
Chevytalk.com Moderator


 
61ragtop 
Member
Posts: 622

Age: 38
Loc: Langley B.C. Canada
Reg: 07-30-03
04-09-10 06:25 AM - Post#1895416    
    In response to bowtieollie

No problem I have it saved in my fav links. I still have not gotten mine to the proper specs but no vibe or shudder here. It is also very modified suspension and WAY lower than stock too though.

 
629C1 Impala 
Forum Newbie
Posts: 6

Reg: 04-04-10
04-09-10 11:55 PM - Post#1895961    
    In response to 61ragtop

Bowtieollie, Thanks, I read all the past posts but I still have a nagging question...........
Since the front shaft does not move up or down why not just deal with the center and pinon angles of the rear shaft as if it were a one piece like any one piece shaft vehicle???
Granted you would need to put a slight,1/4-1/2, angle on the front angle to keep the needles rolling.
Help me understand why this isn't possible...
Thank you again!1

 
turbo38s10 
"4th Year" Platinum Supporting Member
Posts: 806
turbo38s10
Loc: Agawam,MA
Reg: 09-17-09
04-10-10 02:02 PM - Post#1896259    
    In response to 629C1 Impala

Go to the manuals section above. Open it and then open the 1961 Chevy Shop manual, open the rear axle section. About half way thru you see everuthing your asking , pictures and explanations as well as how to.

 
bowtieollie 
ChevyTalk Subject Matter Expert
Posts: 21128
bowtieollie
Loc: See the USA in your Chevr...
Reg: 12-06-99
04-11-10 07:00 AM - Post#1896606    
    In response to 629C1 Impala

Hi there,

Actually, the front shaft does move up and down!

If you put a video camera under the car, you may be shocked at how that engine/transmission bounces around merrily down the roadway....

I once had a GM Engineering video done for Hydramatic durability testing. The mule was a 1970 Buick Skylark 455. Hood was removed and cameras were installed under the car. Now get this... the "test driver" held his foot to the floor and shifted between D and R as the car rolled within a 20-30 foot section of concrete.

You should see the dynamics with the driveline and of course with the hood off - you could see that BEAUTIFUL Quadrajet WOT and the 455 at full song... and these guys got paid to do this....

Just remember to keep the front U joint angle the same as the rear. I always start at the front first - then measure the rear.
Bowtieollie
Chevytalk.com Moderator


Edited by bowtieollie on 04-11-10 07:02 AM. Reason for edit: No reason given.

 
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