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NASCAR Transmission Slip Yokes


All MWE NASCAR transmission yokes are hardened and shot peened and won't wear when used with roller bearings. Yokes with a 1.885" barrel diameter are for use with a bushing style tailhousing while the 1.888" barrel diameter yokes are for use with the roller bearing style tailhousing. MWE measures the "D" dimension as the end of the transmission yoke to the u-joint center.
Part Number
"D" Dimension
"H" Dimension
Barrell Diameter
Spline Count
Price
39065
Reduced Mass
6-5/16"
5"
1.885
32
(2 omitted)
$234.00
39081
Reduced Mass
8-5/8"
6-11/16"
1.888
32
(2 omitted)
$234.00
39004
Reduced Mass
5-3/4"
3-13/16"
1.885
32
$204.00
5-3/4"
4-3/16"
1.885
32
$219.00
39057
Reduced Mass
5-3/4"
4-3/16"
1.888
32
$219.00
6-7/16"
4-7/16"
1.888
32
(1 omitted)
$219.00
39068
Reduced Mass
6-7/16"
4-1/2"
1.888
32
(2 omitted)
$219.00
6-7/16"
4-1/2"
1.888
32
(2 omitted)
$248.50
 

4" NASCAR MWX Series Driveshaft


PART NUMBER 39860
This 4" x .065" wall DOM Steel driveshaft includes Precision 1350 series low drag joints. This shaft is painted white to comply with NASCAR regulations. The close coupled weld yoke design is shot peened and has a 20 degree operating angle (maximum), balanced to G30 specifications, and meets SFI 43.1 specifications. The assembly price includes any transmission yoke listed above. $94500
 
 

Precision 1350 Series U-Joint


PART NUMBER 39029
This is a high-quality, true solid (non-grease-able) U-joint. $3325
 

Pinion Yokes

 

Bolt-Strap Retaining Design Yokes
PART NUMBER 39053
9" NASCAR Short Yoke, with pulley, 28 spline "B"=3-9/16" Nickel plated $35500
Used with P/N 39027 strap kit)
PART NUMBER 39024
9" NASCAR Winston Cup Yoke, with pulley $19600
Used with P/N 39027 strap kit)
PART NUMBER 39027
Bolt-Strap Retaining Kit, OE Spicer straps with bolts (pr) $950
Billet Retaining Cap Design Yokes
PART NUMBER 39063
9" NASCAR Short Winston Cup Yoke, no pulley, 28 spline "B"=3-9/16" Nickel Plated $20600
Used with P/N 39111 billet cap kit)
PART NUMBER 39064
9" NASCAR Long Winston Cup Yoke, no pulley, 28 spline "B"=3-7/8" $19600
Used with P/N 39111 cap kit)
PART NUMBER 39111
Billet Cap Kit for NASCAR, billet caps with studs and 12 point nuts (pr) $8450

Teflon Low Friction Seal


PART NUMBER 57924
Low drag 9" Ford standard pinion seal $5505
 

NASCAR Pinion Support


PART NUMBER 57690
To reduce friction and bearing pre-load this assembly uses an angular contact ball bearing in the rear and a heavy-duty Timken tapered bearing in the front. Bearing pre-load can be reduced from 18-20 inch lbs. to 3-5 inch lbs. Sold pre-assembled and the bearing pre-load is factory set using a hardened solid pre-load spacer rather than a crush sleeve or shims. Field shimming for preload is not required $30500.
 

9" Ford NASCAR Case


PART NUMBER 57465
3.062" bore with pump mounts and fluid ports. Load bolt provision, 3/8-16 threads for pinion support, lightened main caps. 27.7 lbs $60500
 

Internal Oil Pump Kit


PART NUMBER 57466
 Internal lubrication pumps pressure feed oil to areas that become starved from acceleration forces. The pump is internally mounted to the thirdmember case (special machining required). Circle tracl applications use the pump for flow to an oil cooler with the return flow providing cooling and lubrication. $49500