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Sequential 4-speed with a hefty 11.5" R&P. Does your engine make power that most gearboxes can't handle? The Weddle S4D is designed for big cars with big power. Originally known as the Mendeola S4D, the Weddle S4D features the same proven gear stacks of the S4 mated to an 11.5" ring and pinion. Comes standard with a Chevy LS bell housing set up for a 8" triple disc or a 9" twin disc clutch.

Part Number: 


Shipping Weight: 

200 lb



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This item cannot be purchased online.

To purchase this product, please call us
at 805-562-8600 or email us

Questions? Call us at 805 562 8600 or email us.

  • Industry proven Weddle Klingelnberg 11.5" diameter ring and pinion
  • Spiral bevel ring and pinion reduces frictional losses and can be run mid or rear engine
  • Bronze load bolt prevents ring gear displacement
  • Weddle Racing gears with extra wide faces. Design based on 85mm shaft center distance
  • Sequentially shifted forward gears
  • Hemi spline 300M input shaft (1-3/16" x 18-spline)
  • 934 drive flanges standard
  • External housings cast from A356 aluminum and heat treated to T6 condition
  • Housings stainless shot blasted after casting
  • Bell housing with Chevy bolt pattern standard
  • Billet aluminum sidecovers
  • Differential supported by heavy-duty tapered roller bearings
  • Outboard ball bearings support the drive flanges
  • Housings pre-drilled for external oil system
  • Download Installation Instructions
  • Download Exploded View Diagrams
  • Download Drawing CH BH
  • Download Drawing VW BH

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  • Ring and Pinions: 4.88, 4.63
  • 1st Gears: 3.27, 3.09, 2.91
  • 2nd, 3rd, and 4th gears: 2.21, 2.14, 2.08, 1.93, 1.67, 1.59, 1.56, 1.50, 1.44, 1.37, 1.32, 1.26, 1.20, 1.14, 1.10