One piece drive shaft runners - The 1947 - Present Chevrolet & GMC Truck Message Board Network

71meangreenc10 · 10-27-2009, 08:08 PM

Now that Shane has hooked me up with the shims.....What are your pinion angles on the rear end and trans?????

I think any adjustments I do will help, but never hurts to ask. (Unless I ask the wife for time to work on the trucks, thats another story)

Thanks

Smitty

**N2TRUX** · 10-31-2009, 10:06 AM

Anyone?

71meangreenc10 · 10-31-2009, 12:02 PM

My thoughts exactly.....

Someone has to be running a good one piece shaft,,,,,,,would love to know the pinion angle......

Smitty

LONGHAIR · 10-31-2009, 03:29 PM

I'm not totally sure what you are asking?
Is this an extremely lowered truck? Something that makes you think you ned to adjust the angle away from stock?

"Ideally" the front and rear should be as close to equal as possible, but it's not necessarily easy to achieve.
In stock form the pinion is tilted up a few degrees and the transmission is tilted down an equal amount, so the angles are matched. Lowering with a trailing arm suspension affects the pinion but not the transmission, so "in theory" the pinion needs to be shimmed upward...how much would depend upon a few things. How much drop, LWB or SWB, etc.
A problem comes in with shimming though. Tipping the pinion upward affects both angles.....so you have reduced the actual angle of both but done nothing to equalize them to each other.

How's that for a long-winded answer for a question I didn't understand?...LOL

71meangreenc10 · 10-31-2009, 06:12 PM

this is what i got.....

When i did my frame off and put it all back together with oe parts, I had a 1 piece shaft that worked fine, after re-assembly with new springs the pinion angle is too far up and about 60 mph it will shake you out of the truck.

the shaft is fine, u joints fine, I want to shim it from the rear thus pushing the pinion angle down.

i would like to know who is using a 1 piece shaft and if they have the ability to measure the angles so I can test mine.

This truck came with a 2 piece shaft originally.

Smitty

SCOTI · 11-01-2009, 12:07 AM

Quote:

Originally Posted by 71meangreenc10

this is what i got.....

When i did my frame off and put it all back together with oe parts, I had a 1 piece shaft that worked fine, after re-assembly with new springs the pinion angle is too far up and about 60 mph it will shake you out of the truck.

How is it lowered?
How much is it lowered?

71meangreenc10 · 11-01-2009, 12:09 PM

Its stock ride height, no suspension mods have been done.

If I put the shims in the rear of the axle perchs it will push the angle down.

Smitty

Read this post to envision the shims.....

http://67-72chevytrucks.com/vboard/s...d.php?t=369008

SCOTI · 11-01-2009, 01:17 PM

I don't understand why your stock height truck would require pinion shims unless something was changed. The difference between 1pc & 2pc shafts shouldn't impact pinion angle. Is it possible the vibration is from the driveshaft itself since longer d.shafts want to flex in the center of the shaft when they exceed a given dimension?

The pinion on the rear should be 'in phase' w/the end of the drivetrain (tranny tailshaft). Everyone's truck will possibly be different so it's best to crawl under your truck & measure w/an angle finder type gauge available from your local Lowes, HomeDepot, or Sears.

LONGHAIR · 11-01-2009, 07:42 PM

This sounds like a driveshaft problem not a pinion angle problem. The shaft is bent, out of balance, out of phase.....something.

effects66 · 11-17-2009, 04:57 PM

This company
http://www.stockcarproducts.com/trkarm1.htm

doesn't make those shims any more. Any one know of another place to get them. I know CPP has them but they are $69 for a pair.

71meangreenc10 · 11-18-2009, 10:26 PM

CPP = $$69, figures, how can they explain that cost? Are they 24K gold plated, no matter, they wont get my money....

Smitty

effects66 · 11-18-2009, 11:25 PM

Yeah just rediculous. It sucks that Stock car parts isn't making them them any more.

**Hart_Rod** · 11-20-2009, 11:51 PM

Quote:

Originally Posted by 71meangreenc10

Now that Shane has hooked me up with the shims.....What are your pinion angles on the rear end and trans?????

I think any adjustments I do will help, but never hurts to ask. (Unless I ask the wife for time to work on the trucks, thats another story)

Thanks

Smitty

Smitty - here's a good article on pinion angles:

http://www.carcraft.com/howto/91758/index.html

10-27-2009, 08:08 PM	#1
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	One piece drive shaft runners Now that Shane has hooked me up with the shims.....What are your pinion angles on the rear end and trans????? I think any adjustments I do will help, but never hurts to ask. (Unless I ask the wife for time to work on the trucks, thats another story) Thanks Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van" Last edited by 71meangreenc10; 10-27-2009 at 08:09 PM.

10-31-2009, 10:06 AM	#2
N2TRUX Happy to be here Join Date: Mar 2000 Location: Cypress, TX Posts: 39,021	Re: One piece drive shaft runners Anyone? __________________ Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra"

10-31-2009, 12:02 PM	#3
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: One piece drive shaft runners My thoughts exactly..... Someone has to be running a good one piece shaft,,,,,,,would love to know the pinion angle...... Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

10-31-2009, 06:12 PM	#5
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: One piece drive shaft runners this is what i got..... When i did my frame off and put it all back together with oe parts, I had a 1 piece shaft that worked fine, after re-assembly with new springs the pinion angle is too far up and about 60 mph it will shake you out of the truck. the shaft is fine, u joints fine, I want to shim it from the rear thus pushing the pinion angle down. i would like to know who is using a 1 piece shaft and if they have the ability to measure the angles so I can test mine. This truck came with a 2 piece shaft originally. Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van"

11-01-2009, 12:09 PM	#7
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: One piece drive shaft runners Its stock ride height, no suspension mods have been done. If I put the shims in the rear of the axle perchs it will push the angle down. Smitty Read this post to envision the shims..... http://67-72chevytrucks.com/vboard/s...d.php?t=369008 __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van" Last edited by 71meangreenc10; 11-01-2009 at 12:11 PM.

11-01-2009, 01:17 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,071	Re: One piece drive shaft runners I don't understand why your stock height truck would require pinion shims unless something was changed. The difference between 1pc & 2pc shafts shouldn't impact pinion angle. Is it possible the vibration is from the driveshaft itself since longer d.shafts want to flex in the center of the shaft when they exceed a given dimension? The pinion on the rear should be 'in phase' w/the end of the drivetrain (tranny tailshaft). Everyone's truck will possibly be different so it's best to crawl under your truck & measure w/an angle finder type gauge available from your local Lowes, HomeDepot, or Sears. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

11-17-2009, 04:57 PM	#10
effects66 Registered User Join Date: Dec 2008 Location: San Jose Posts: 206	Re: One piece drive shaft runners This company http://www.stockcarproducts.com/trkarm1.htm doesn't make those shims any more. Any one know of another place to get them. I know CPP has them but they are $69 for a pair. Last edited by effects66; 11-17-2009 at 05:18 PM.

11-18-2009, 10:26 PM	#11
71meangreenc10 Its a Truck Thing...... Join Date: Dec 2004 Location: Sierra Vista, Arizona Posts: 3,179	Re: One piece drive shaft runners CPP = $$69, figures, how can they explain that cost? Are they 24K gold plated, no matter, they wont get my money.... Smitty __________________ 71 C10 283/3SPD Full Resto 71 GMC 1500 Sierra Grande http://67-72chevytrucks.com/vboard/s...d.php?t=518599 70 C10 Suburban Former military GSA truck. 72 Chevy Blazer 4X4, Sloppy Jo, Mountain Climber. Wife says no more trucks. http://67-72chevytrucks.com/vboard/s...d.php?t=707378 72 GMC 1 Ton Motor Home, wife said no more trucks until she saw this one. Gen 3 6.0/4L80E 4.10 http://67-72chevytrucks.com/vboard/s...d.php?t=761110 68 GMC Suburban was 3/4 ton, now 1/2.Wife shook her head 71 C30 Wrecker 71 C20 Scott-Bilt As weird as it gets..BB Cheyenne AC Truck 68 GMC Long Stepside. They keep following me home 69 C30 Former Motor Home, Flat Bed time 70 G20 Red-E-Kamp Conversion "I'm your Boogy Van" Last edited by 71meangreenc10; 11-18-2009 at 10:27 PM.

11-18-2009, 11:25 PM	#12
effects66 Registered User Join Date: Dec 2008 Location: San Jose Posts: 206	Re: One piece drive shaft runners Yeah just rediculous. It sucks that Stock car parts isn't making them them any more.



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