What do you think of my drive line Angles? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Arl37 · 01-19-2015, 11:06 AM

I have a 69 C10 long bed with a 350 crate and 700R4 transmission. 3.07 rear end. I just finished installin 2 1/2 dropped spindles and 4 inch dropped rear springs. I think I may have a slight vibration under hard acceleration that I didn't notice before installing the dropped rear springs. I had the front end aligned and tires balanced two days ago. To eliminate drive line as the cause I determined my two piece drive line angles as set forth below.
What do you think of them? do they look acceptable? If not why not.
Thanks

Sorry I couldnt figure out how to rotate immage

Bigdav160 · 01-19-2015, 12:34 PM

I think it looks good. How does it drive? Any vibration?

hamjet · 01-19-2015, 12:40 PM

Gotta love those angles of the dangles....

Arl37 · 01-19-2015, 01:03 PM

I have s slight vibration under full throttle. Nothing at cruising. Could be something other than drive shaft alignment.
Just trying to eliminate all possibilities.

**VetteVet** · 01-19-2015, 01:42 PM

Quote:

Originally Posted by arl37

i have a 69 c10 long bed with a 350 crate and 700r4 transmission. 3.07 rear end. I just finished installin 2 1/2 dropped spindles and 4 inch dropped rear springs. I think i may have a slight vibration under hard acceleration that i didn't notice before installing the dropped rear springs. I had the front end aligned and tires balanced two days ago. To eliminate drive line as the cause i determined my two piece drive line angles as set forth below.
What do you think of them? Do they look acceptable? If not why not.
Thanks

sorry i couldnt figure out how to rotate immage

Name: drive shaft 002.jpg
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geezer#99 · 01-19-2015, 02:17 PM

Your centre bearing is where the problem is. The u-joint there has no working angle.
Here's a link to figure it out.
http://www2.dana.com/pdf/J3311-1-DSSP.pdf

And another one.
http://www.drivetrain.com/parts_cata..._problems.html

Bigdav160 · 01-19-2015, 03:02 PM

Looking at that again, Geezer right. Although the front and rear joint will cancel themselves out the acceleration and deceleration the shaft are likely transferred to the bearing and frame.

Arl37 · 01-19-2015, 09:05 PM

you guys are such geniuses. i had one hole in the carriage bearing bracket left and i moved it up to that hole and solved all my vibration problems. moreover i checked my angles angles he 2nd shaft was up 3,7 not down.
thanks for your help.

01-19-2015, 11:06 AM	#1
Arl37 Registered User Join Date: Jul 2011 Location: Valley Center, Ca Posts: 277	What do you think of my drive line Angles? I have a 69 C10 long bed with a 350 crate and 700R4 transmission. 3.07 rear end. I just finished installin 2 1/2 dropped spindles and 4 inch dropped rear springs. I think I may have a slight vibration under hard acceleration that I didn't notice before installing the dropped rear springs. I had the front end aligned and tires balanced two days ago. To eliminate drive line as the cause I determined my two piece drive line angles as set forth below. What do you think of them? do they look acceptable? If not why not. Thanks Sorry I couldnt figure out how to rotate immage Attached Images

01-19-2015, 12:34 PM	#2
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: What do you think of my drive line Angles? I think it looks good. How does it drive? Any vibration? __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

01-19-2015, 12:40 PM	#3
hamjet Registered User Join Date: Apr 2013 Location: South Westerlo, New York Posts: 1,325	Re: What do you think of my drive line Angles? Gotta love those angles of the dangles.... __________________ Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB.

01-19-2015, 01:03 PM	#4
Arl37 Registered User Join Date: Jul 2011 Location: Valley Center, Ca Posts: 277	Re: What do you think of my drive line Angles? I have s slight vibration under full throttle. Nothing at cruising. Could be something other than drive shaft alignment. Just trying to eliminate all possibilities.

01-19-2015, 02:17 PM	#6
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,731	Re: What do you think of my drive line Angles? Your centre bearing is where the problem is. The u-joint there has no working angle. Here's a link to figure it out. http://www2.dana.com/pdf/J3311-1-DSSP.pdf And another one. http://www.drivetrain.com/parts_cata..._problems.html

01-19-2015, 03:02 PM	#7
Bigdav160 Registered User Join Date: Apr 2011 Location: Klein Texas Posts: 3,852	Re: What do you think of my drive line Angles? Looking at that again, Geezer right. Although the front and rear joint will cancel themselves out the acceleration and deceleration the shaft are likely transferred to the bearing and frame. __________________ My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe

01-19-2015, 09:05 PM	#8
Arl37 Registered User Join Date: Jul 2011 Location: Valley Center, Ca Posts: 277	Re: What do you think of my drive line Angles? you guys are such geniuses. i had one hole in the carriage bearing bracket left and i moved it up to that hole and solved all my vibration problems. moreover i checked my angles angles he 2nd shaft was up 3,7 not down. thanks for your help.

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