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OMC 400-800 rebuilt upper gearcase cost

Stringer rebuilt upper gearcase years 1970 to 1985

$360 core charge deposit will be refunded after we receive your core (trade in)

OMC rebuilt 400-800 Stringer outdrive upper gearcase

OMC rebuilt 400-800 Stringer outdrive upper gearcase

  • Rebuilt unit includes: Removal and shimming
  • New Parts:
  • Gears (drive / driven)
  • Water pump shaft / drive shaft
  • 4 Bearings
  • Oil seals, o-rings and gaskets
  • Water pump assembly (impeller housing and impeller)
  • Ball gear, plug, shims and nut
  • For a complete list of new parts installed, please see: OMC 800 outdrive rebuild page

Machined parts:

Pinion drive shaft*

*If drive shaft groves from seal wear requires machining of more than .010 of an inch or water pump shaft splines male or female are more than 20% worn, new shafts will be installed into the upper housing

upper gearcase gears

upper gearcase gears

Different size engines require different gear ratios in the drive. The manufacturer changes these ratios with different gear sets. The ratio change is in the upper housing. All 1973 - 1985 upper housings are identical* except for the tooth count on the gears and left or right steering worm. Below is a chart showing the tooth count for the different size engines used with sterndrives. All lower housing ratios are either 2.0:1 for the four-cylinder engines or 1.83:1 for the six,, and eight-cylinder engines. *The original driven gears in 1970 - 1974 upper housings are not machined for a centering cone. All 1975 and newer driven gears and all GLM replacement driven gears are machine for a centering cone. A new drive shaft with shorter splines and a centering cone must be installed when replacing the original (non-centering cone) driven gear.

Low profile case

Gear Ratio

Left hand steering

Right hand steering

4 Cylinder engines with 120 hp. Years 1970 to 1977 will have used set installed in rebuild units

16 / 20
Call to order
 

4 Cylinder engines with 140 hp. Years 1970 to 1977 will have used set installed in rebuild units

19 / 20
Call to order
 

4 cylinder engines 1978 and up $1499.09 *after trade in

21 / 18

P/N 27500R OEM 982486

3.8 Liter 229 cubic inch V6 $1499.09 after trade in

21 / 20

P/N 27400R OEM 982739

165 to 190 hp. with inline 6-cylinder years 1972 to 1977 $1499.09

21 / 19

P/N 27300R OEM 981229

4.3 Litre 262 / 264 cubic inch V6 years 1986 and up $1499.09 *after trade in

21 / 19

P/N 27300R OEM 981229

5.0L / 302 Ford V8 $1499.09 *after trade in

21 / 17

P/N 27200R OEM 982487

5.0L / 305 Chevy V8 $1499.09 *after trade in

21 / 17

P/N 27100R OEM 982488

5.7 Liter / 350 Chevy V8 $1499.09 *after trade in

21 / 16

P/N 27100R OEM 982488

5.8 Liter / 351 Ford V8 $1499.09 *after trade in

21 / 16

P/N 27100R OEM 982488

Rebuilt high profile upper case $1699.09 *after trade in

   

New high profile Stringer $2499.09 *after trade in