Simplicity and extra durability, that's what the S4 delivers. No more H pattern, just pull to shift up, push to shift down, just like a motorcycle. This exciting new transaxle fills the void for many high powered off-road applications. It goes beyond the capabilities of our MD4-2D in many ways, yet it fits the same chassis mounts. If you're considering an upgrade from an MD4 some minor spacer work will be needed on your motor mounts to raise the motor slightly. With the larger transmission gears of the S4 the input shaft had to be raised, which in turn raises the bell housing about 3/4" higher compared to the MD4 transaxle. The other area to confirm is the clearance on the top of the transmission case. Although the differential area on the S4 is the same height as the MD4, the S4 transmission area (the right 50% of the picture below) of the case is about 2" higher than the MD4 case.
The other major difference on the S4 is the shift linkage. Since the S4 uses cables to shift, versus a shift shaft on the MD4, you should make sure you have the routing of the S4 shift cables planned out for your adaptation.
Other than the caveats noted above, an S4 transaxle will bolt up to the same mounts of the MD4 box.
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Cable activated shifter |
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Many Ring & Pinion ratios available |
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Dog ring engagement |
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All new EN36C gear sets - 1" face widths, much larger shaft centers |
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Dual disc 1 3/16 - 18 clutch packs |
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935 or 930 drive stubs |
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Uses same chassis mount pattern as the MD4 (3/4" difference in engine height) |
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Cooling pump, optional |
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Up to 750 HP range, sand applications |
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A perfect match for LS1 or Northstar V8s |
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Weight 180 |
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Chevy bell housing option |
Transaxle ratio choices:
This 2 seater is powered by a mid-engine mounted LS1 with supercharger, hooked up to an S4 transaxle. This is an awesome looking car. Seems like all the ultimate sandcars have Mendeola transaxles.
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