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2003 Chevrolet Corvette Restoration Kit
The 6-speed, manual transmission (RPO MM6/M12), used in Corvettes, incorporates the following
features:
•
An aluminum case.
•
Fully synchronized gearing with an enhanced synchronizer cone arrangement:
•
Tripple-cone: FIRST, SECOND
•
Double-cone: THIRD, FOURTH, FIFTH, SIXTH
•
Single-cone: REVERSE
•
An internal shift rail mechanism.
•
A remote transmission shift control mounted forward of the transmission.
•. An external transmission shift rod enabling the forward mount location of the transmission shift
control.
•
An extended-length transmission output shaft mating directly to the rear axle drive pinion (in the
rear of the differential housing).
•
Tapered roller bearings supporting the mainshaft and countershaft.
•
Caged roller bearings under all speed gears.
•
Solenoid inhibit of SECOND and THIRD gears.
•
Solenoid inhibit of REVERSE gear during predefined forward motion.
These features combine to YIeld a rugged, reliable system capable of handling input torques of up to 610
N'm (450 Ib ft) for the MM6 and 540 N'm (400 Ib ft) for the M12.
The gear ratios used in this transmission offer a wide operating range providing excellent acceleration
and fuel economy.
The gear ratios are as follows:
Shift Control and Shift Rod
To allow the rear-of-vehicle transmission location, the transmission shift shaft has been relocated to the
front of the transmission. The shift shaft is connected to a transmission shift rod (2) which contains two
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