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Old 10-09-2008, 05:33 PM
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Driveline Angles on V-8 Vega

Greetings

I get a vibration on deceleration only,under power it's smooth.

The car is a street/strip 75 Vega with a 383,turbo 350,12 bolt 4-link rear with adjustable upper & lower control arms.

The trans is at 2 degrees down,the pinion at 3 degrees up,the driveshaft is sitting at 5 degrees and it's 41'' long.In this configuration it's ran 11.76@113

Are the working angles of the driveshaft O.K.? Am I missing something?

Hoonbash
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Old 10-10-2008, 11:10 AM
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Pinion Angles

Here's some Info on Pinion Angles.
http://www.buickperformance.com/Pinion.htm

http://www.2quicknovas.com/happypinions.html

http://www.wolferacecraft.com/pinionangle.aspx
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Old 10-10-2008, 05:39 PM
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Thanks for the links, I think the Wolferacecraft site has the answer for me.



Pinion Angle Recommendations:

Suspension Recommended Angle
Using Full Wolfe Race Craft Suspension - all solid mounting points. -1 to -1.5
Half Solid & Half Poly Mounting points -1.5- to -2.5
All Poly mounting points -2.5 to -3.5
All Rubber mounting points -3 to -4.5
The more you get away from having all solid mounting points the more the rearend is going to try and rotate upward during launch. Therefore the more angle you must start with to prevent the angle from becoming positive (+). The idea is that when the rearend rotates you want the angle between the driveshaft and the pinion would be 0.
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