Need pictures of .... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Hart_Rod** · 01-05-2011, 04:47 PM

.... installed rear pinon adjustment shims. TIA

R/

dirtball · 01-05-2011, 05:12 PM

Kind of hard to get a picture of, they are just sandwiched between the bearing and the base of the helical cut gear. Does that make sense?

faribran · 01-05-2011, 05:19 PM

Rob,
are you playing with a rear end?

*project 67 sub* · 01-05-2011, 05:22 PM

Quote:

Originally Posted by dirtball

Kind of hard to get a picture of, they are just sandwiched between the bearing and the base of the helical cut gear. Does that make sense?

i believe he is talking about the wedge shaped shims that go between the trailing arms and the rear end mounting perch to adjust the pinion angle to the right degree

dirtball · 01-05-2011, 05:38 PM

Quote:

Originally Posted by project 67 sub

i believe he is talking about the wedge shaped shims that go between the trailing arms and the rear end mounting perch to adjust the pinion angle to the right degree

Gotcha! I was thinking pinion depth, not angle.

*project 67 sub* · 01-05-2011, 05:41 PM

haha no problem lol.

SCOTI · 01-05-2011, 07:04 PM

Quote:

Originally Posted by Hart_Rod

.... installed rear pinon adjustment shims. TIA

R/

What specifically are you looking for?

PBFAB.COM · 01-05-2011, 08:00 PM

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

**Hart_Rod** · 01-06-2011, 09:54 AM

Quote:

Originally Posted by porterbuilt

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

Nate - those are the ones I ordered. I just wanted to make sure I was installing them correctly....

.

Quote:

Originally Posted by SCOTI

They go between the rear-end housing 'pad' & the truck arm 'pad'. Which direction depends on which way you're trying to go. Mine are installed to yield 3° positive pinion angle.

The 1st pic is a 3/4 view from the front of the housing (driver side). 2nd pic is a 3/4 view from behind the housing (again driver side). Also note a little subliminal PB endorsement

....

Thanks Scoti. Any shots of the transmission and driveline to see your angles?

dznucks · 01-06-2011, 11:11 AM

I dont want to hi-jack Rob's thread, but would like to add more discussion to this topic.

When setting the pinion angle on a leaf spring rear, you allow for flex in the leafs so that the pinion angle matches the tranny angle while under load.

Since our trucks use trailing arms and dont flex (much), are you guys allowing for any extra degrees or are you matching your pinion angle equal and opposite of the tranny angle?

I almost bought those shims from stock car products, but had my cpp drop block machined so my pinion angle is the same angle as my tranny instead.

Mechanic77 · 01-06-2011, 12:15 PM

Quote:

Originally Posted by dznucks

I dont want to hi-jack Rob's thread, but would like to add more discussion to this topic.

When setting the pinion angle on a leaf spring rear, you allow for flex in the leafs so that the pinion angle matches the tranny angle while under load.

Since our trucks use trailing arms and dont flex (much), are you guys allowing for any extra degrees or are you matching your pinion angle equal and opposite of the tranny angle?

I almost bought those shims from stock car products, but had my cpp drop block machined so my pinion angle is the same angle as my tranny instead.

+1, I had the same question...I'm almost ready to weld my axle perches (sp?) on to my rearend and was wondering if you just set the pinion angle equal and opposite of the tranny angle? Because I'm putting a different rearend in and welding the perches on, I have the option of putting the pinion angle wherever it needs to be.

SCOTI · 01-06-2011, 11:30 AM

Quote:

Originally Posted by Hart_Rod

Nate - those are the ones I ordered. I just wanted to make sure I was installing them correctly....

.

Thanks Scoti. Any shots of the transmission and driveline to see your angles?

I haven't gotten the drivetrain in yet but my plan is to adjust the height @ the trans x-member if needed.

**Hart_Rod** · 01-06-2011, 11:34 AM

Quote:

Originally Posted by dznucks

I dont want to hi-jack Rob's thread, but would like to add more discussion to this topic.

When setting the pinion angle on a leaf spring rear, you allow for flex in the leafs so that the pinion angle matches the tranny angle while under load.

Since our trucks use trailing arms and dont flex (much), are you guys allowing for any extra degrees or are you matching your pinion angle equal and opposite of the tranny angle?

I almost bought those shims from stock car products, but had my cpp drop block machined so my pinion angle is the same angle as my tranny instead.

I will probaby do the same thing once I figure out the correct angle.

Quote:

Originally Posted by SCOTI

I haven't gotten the drivetrain in yet but my plan is to adjust the height @ the trans x-member if needed.

Roger that. I also notices that you flipped the trailing arm mounting brackets on your ECE crossmember. How much does that help on the pinion angle?

**Hart_Rod** · 01-05-2011, 09:42 PM

Quote:

Originally Posted by SCOTI

What specifically are you looking for?

Do you have any pictures of your shims installed? I just want to make sure I put them in the correct way.....

.

SCOTI · 01-05-2011, 09:59 PM

They go between the rear-end housing 'pad' & the truck arm 'pad'. Which direction depends on which way you're trying to go. Mine are installed to yield 3° positive pinion angle.

The 1st pic is a 3/4 view from the front of the housing (driver side). 2nd pic is a 3/4 view from behind the housing (again driver side). Also note a little subliminal PB endorsement

....

jmedero · 01-06-2011, 11:12 PM

This will be fun to figure out on mine. How does this relate to a two piece drive shaft? Once I get panhard bar mount done this is next.
Posted via Mobile Device

01-05-2011, 04:47 PM	#1
Hart_Rod ************* Join Date: Apr 2005 Location: Pensacola, FL Posts: 17,858	Need pictures of .... .... installed rear pinon adjustment shims. TIA R/ __________________ Rob - https://www.instagram.com/hart_rod_c10 As Iron Sharpens Iron, So One Man Sharpens Another. Proverbs 27:17 FOR SALE: DBW pedal bracket - http://67-72chevytrucks.com/vboard/s...d.php?t=651123 FOR SALE: Hood Brackets http://67-72chevytrucks.com/vboard/s...d.php?t=679945 1987 Silverado SWB - 34.5K original miles http://67-72chevytrucks.com/vboard/s...d.php?t=801834 1969 SuperBurb - http://67-72chevytrucks.com/vboard/s...d.php?t=200387 1968 Farm truck - http://67-72chevytrucks.com/vboard/s...d.php?t=358692 1968 SWB - http://67-72chevytrucks.com/vboard/s...d.php?t=551258 1948 Chevy - http://67-72chevytrucks.com/vboard/s...=122164&page=3

01-05-2011, 05:12 PM	#2
dirtball Registered User Join Date: May 2006 Location: Colorado Posts: 412	Re: Need pictures of .... Kind of hard to get a picture of, they are just sandwiched between the bearing and the base of the helical cut gear. Does that make sense? __________________ Brett

01-05-2011, 05:19 PM	#3
faribran Registered User Join Date: Jul 2005 Location: AL Posts: 1,828	Re: Need pictures of .... Rob, are you playing with a rear end? __________________ "

01-05-2011, 05:41 PM	#6
project 67 sub Account Suspended Join Date: Mar 2007 Location: san bernardino ca. everywhere Posts: 3,938	Re: Need pictures of .... haha no problem lol.

01-05-2011, 08:00 PM	#8
PBFAB.COM Senior Member Join Date: Dec 2003 Location: Mesa,Az Posts: 3,981	Re: Need pictures of .... http://www.stockcarproducts.com/trkarm1.htm __________________ www.PorterbuiltFabrication.com Phone: 480-297-2621 E-mail: sales@pbfab.com Find us on FaceBook under Porterbuilt Fabrication Specializing in Chassis and Suspension Components for your Classic Chevrolet Truck. We offer components from the following manufacturers: Porterbuilt Accuair Ridetech (Air Ride Technologies) Air Lift Wilwood Intro Unisteer ECE Gotta Show Air Lift Borgeson CPP Supporting this forum since 2003!

01-06-2011, 11:11 AM	#10
dznucks Registered User Join Date: Feb 2006 Location: Smyrna, Ga Posts: 1,647	Re: Need pictures of .... I dont want to hi-jack Rob's thread, but would like to add more discussion to this topic. When setting the pinion angle on a leaf spring rear, you allow for flex in the leafs so that the pinion angle matches the tranny angle while under load. Since our trucks use trailing arms and dont flex (much), are you guys allowing for any extra degrees or are you matching your pinion angle equal and opposite of the tranny angle? I almost bought those shims from stock car products, but had my cpp drop block machined so my pinion angle is the same angle as my tranny instead. Last edited by dznucks; 01-06-2011 at 11:15 AM.

01-05-2011, 09:59 PM	#15
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Re: Need pictures of .... They go between the rear-end housing 'pad' & the truck arm 'pad'. Which direction depends on which way you're trying to go. Mine are installed to yield 3° positive pinion angle. The 1st pic is a 3/4 view from the front of the housing (driver side). 2nd pic is a 3/4 view from behind the housing (again driver side). Also note a little subliminal PB endorsement .... Attached Images __________________ 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.* Last edited by SCOTI; 01-05-2011 at 10:02 PM.

01-06-2011, 11:12 PM	#16
jmedero Registered User Join Date: Jun 2008 Location: pensacola fl Posts: 3,073	Re: Need pictures of .... This will be fun to figure out on mine. How does this relate to a two piece drive shaft? Once I get panhard bar mount done this is next. Posted via Mobile Device __________________ 68 BB burb build thread Scott's super slam front/rear http://67-72chevytrucks.com/vboard/s...d.php?t=378084

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