Mechman 240A 1963-1985 GM Replacement Alternator
$429.00 – $519.00
240A 1963-1985 GM 10DN, 10SI, 12SI Replacement
Specifications:
- Idle Output – 140 Amps
- Cruise Output – 240 Amps
- 2 1/2″ diameter single V pulley
Note: Output graph is plotted with a 7″ diameter crankshaft pulley. 240A units are supplied with a 6-rib serpentine pulley and a v-belt pulley is not recommended due to the load these place on the crankshaft at full output.
Available in natural, satin black, polished, and chrome finishes.
Complete description below.
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Description
This is the 170A unit’s larger brother. The 240A unit makes greater output above 800 engine RPM (2,400 Alternator RPM) and the 170A unit makes greater output below 800 engine RPM plain and simple.
Mechman “Hot Rod” Alternators
These are designed as direct replacements for 1963-1985 GM Vehicles originally fitted with a 10DN, 10SI, or 12SI alternator. They utilize 6-phase Hairpin stators which use less horsepower than traditional 3-phase designs. The following are the features of these outstanding units:
- Bolt-in Replacement for 10DN, 10SI, or 12SI GM Alternators
- Internally Regulated
- Internal Fans
- Available in 170A and 240A Sizes
- Available in Natural, Polished, or Chrome Finish
- Single connection to switched +12V to excite
- Heavy Duty 5/16″ Output Stud
- Fitted with 6-rib Serpentine Belt Pulley
- 2 Year Manufacturer’s Warranty
The 170A and 240A units share the same housing. Download a complete Hot Rod Alternator Drawing including all dimensions.
We recommend our 1/0 AWG Charging System Upgrade Kits or Big 3 Upgrade Kits for 240A units!
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