PST DRA3.5 3-1/2" 120 Wall Alum Forged Slip Yoke W/31 Spline

PST DRA3.5  Drag Racing 3-1/2" 120 Wall Aluminum Shaft with 31 spline 1350 Cast Slip Yoke

9 Inch (45-1/4" seal to center)

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3.5″ X .120″ 6061-T6 DOM Aluminum Shaft

Street - Strip Aluminum Driveshafts. 1000 HP Rating! 5 to 6 lbs lighter than the PST Chromoly Driveshaft.

Product Description

3.5″ Shaft with, 1350 Series “Gold” Cryo treated Solid U-joints, are built under the most Stringent Tolerances in the industry.   Tubing is Factory Straightened to .010″ total runout at the center of the tube.  Tube yokes are welded to within .006″ runout on each end.  The shafts are Electronically Computer Balanced to less than 1/8 Oz/Inch, as an assembly, assuring smooth operation at the Big end as well out of the hole.

Critical Speed is calculated on each shaft to insure your Safety and Ultimate Shaft longevity.  We recommend the 3.5″ shaft in most cases to 1000 Horse Power.  4″ Shafts are recommended to 2000 Horse Power.  The shafts are given a brushed finish.

 

                                                                Driveshaft Measurements

If PST is supplying you with transmission slip yoke, Pinion yoke and driveshaft yoke measure Dim W. See Diagram N.

If PST is supplying you with transmission slip yoke and driveshaft measure Dim X. See Diagram N.

2 Piece driveshafts use Dim Y + Z. See Diagram N.

Note that to get these measurements the rearend needs to be in the loaded position, as in when the vehicle is being driven.  DO NOT take measurements if the rear is hanging down loose. 

 

Identify Transmission

Chrysler – Dodge
727 – 30 Spline 1 11/16″ Seal Diameter
904 – 26 Spline 1 9/16″ Seal Diameter

Ford
C6-T56 – 31 Spline 1 11/16″ Seal Diameter
AOD & C4 & T5 – 28 Spline 1 1/2″ Seal Diameter
4 R 7OW – 28 Spline 1.598″ Seal Diameter

General Motors
T-350 700R4-4LLOE – 27 Spline 1 1/2″ Seal Diameter
T-400-4L80E – 32 Spline 1 7/8″ Seal Diameter

Note: Transmission slip yokes are manufactured with various U-Joint Series. It is important to match Horsepower and Torque requirements to U-Joint Series. For aftermarket transmission applications usually a spline count and seal diameter will identify slip yoke required.

 

Identify Rear U-Joint

diagram-d

If Pinion Yoke has Placement tabs that retain the U-Joint, measure inside tabs. See Diagram D.

diagram-e

If Pinion Yoke does not have Placement Tabs that retain U-Joint, measure from flat of yoke inside to inside. See Diagram E.

diagram-l

If 4 bolt Flange is used on pinion, measure Pilot Diameter and center to center diagonally bolt hole to bolt hole. See Diagram L.

diagram-a

Universal Joint Size. There are hundreds of U-Joint sizes or “Series” to accomodate many different applications of power and desired longevity for your automotive, 4×4 truck or auto racing requirements, these 4 series of joints cover most needs.

1310 Spicer Series: 1 1/16″ Cup Diameter (Dim C – Diagram A) 3 7/32″ length (Dim B – Diagram A) Certain Ford applications have 2 cups 1 1/8 Diameter. Appropriate horse power range is up to 500 in circle track or road racing, small tire drag racing and 4×4. Also available: Performance Dynamic Cryo Joint.

1330 Spicer Series: 1 1/16″ Cup Diameter (Dim C – Diagram A) 3 5/8″ length (Dim B – Diagram A) Certain Ford applications have 2 cups 1 1/8 Diameter. Slightly stronger than 1310, Used in 5.0 Mustangs. Also available: Performance Dynamic Cryo Joint.

3R Saginaw Series: 1 1/8″ Cup Diameter (Dim C – Diagram A) Retained with internal clip 2 5/8″ (Dim B – Diagram A). Most common GM joint. Horse power range up to 700 in road racing and circle track. Solid drag racing U-Joint can accomodate most sportsman classes. Also available: Performance Dynamic Cryo Joint.

1350 Spicer Series: Manufactured with OEM tolerances and treated with our Cryogenic Process to yeild the strongest U-Joint available. For drag racing applications a solid non-lube design U-Joint is recommended because of the tremendous initial shock load, or short duration of high torque the joint must be able to withstand.

 

                           How tight should I tighten my u-bolts?

1310 series and 1330 series should be tightened to 17 ft/lbs and 1350 series to 20 ft/lbs. You should never tighten the nuts on any u-bolt excessively. This will cause the cap to distort and the u-joint will fail prematurely.
 
PST DRA3.5 3-1/2" 120 Wall Alum Forged Slip Yoke W/31 Spline - Free Shipping!!!
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  • Item #: PST DRA3.5 3-1/2" Special
  • Manufacturer: Precision Shaft Technologies
  • Condition: New
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