1977 GMC Powermaster Parts


Showing 1 - 10 of 22 products
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Powermaster
  • 12si; 150 Amp; 100 Idle; 1V; Baffle; Black
  • Alternator; 12si; 150 Amp; 100 Idle; 1V; Baffle; Black;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C25 V - 8 Cyl 5.7L 350

Powermaster
  • 12si; 150 Amp; 100 Idle; 1V; Baffle And Cone; Chrome
  • Alternator; 12si; 150 Amp; 100 Idle; 1V; Baffle And Cone; Chrome;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C15 L - 6 Cyl 4.1L 250

Powermaster
  • 153/168 Tooth Flywheel; 190 ft./lb. Torque; 16:1 Compression Ratio; 3.7-1 Gear Reduction; Straight Mount; Natural Finish
  • PowerMax Plus Starter; 153/168 Tooth Flywheel; 190 ft./lb. Torque; 16:1 Compression Ratio; 3.7-1 Gear Reduction; Straight Mount; Natural Finish;
  • PowerMax Plus Starter
  • Product Attributes:
    • Style: Oe
  • Features:
    • Hitachi Style PE106 Replacement
    • Clears Most Headers and Oil Pans
    • Can Be Inverted w/Solenoid Down
    • 4 Position Rotation
    • Supplied With Bolt and Shim Kit
    • Individually Dyno Tested with Proof of Performance Guarantee
  • Powermaster PowerMAX Plus Starter. PE106 Hitachi Style Replacement. 1.8kw/2.5HP Rated up to 16:1 Compression with 180 Ft-Lbs of Cranking Torque and a 3.7:1 Gear Reduction. Billet Aluminum Mounting Block with 4 Position Rotation. All Powermaster Starters Come With Our Dyno Tested Proof Of Performance Guarantee. Made in USA.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C25 Suburban V - 8 Cyl 5.7L 350

Powermaster
  • 12si; 150 Amp; 100 Idle; 1V; Baffle; Natural
  • Alternator; 12si; 150 Amp; 100 Idle; 1V; Baffle; Natural;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C15 Suburban L - 6 Cyl 4.1L 250

Powermaster
  • 12si; 100 Amp; 75 Idle; 1V; OE Look; Polished
  • Alternator; 12si; 100 Amp; 75 Idle; 1V; OE Look; Polished;
  • Alternator
  • Product Attributes:
    • Amperage: 100 Amp
  • Features:
    • Most Popular Classic Look
    • 100 Plus Amps At Top End/75 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • Popular Upgrade For 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C15 L - 6 Cyl 4.8L 292

Powermaster
  • 12si; Straight Mount; 100 Amp; 75 Idle; 1V Pulley; Natural
  • Racing Alternator; 12si; Straight Mount; 100 Amp; 75 Idle; 1V Pulley; Natural;
  • Racing Alternator
  • Product Attributes:
    • Amperage: 100 Amp
  • Features:
    • Most Popular Classic Look GM Style Race Prepped
    • 100 Plus Amps At Top End/75 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • Great Upgrade To Replace Lower Amp Units
    • Fits The Most Popular Straight Mount 12/6/6.61 in. Brackets
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C35 V - 8 Cyl 6.6L 400

Powermaster
  • 12si; 150 Amp; 100 Idle; 1V Pulley; Chrome
  • Alternator; 12si; 150 Amp; 100 Idle; 1V Pulley; Chrome;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C25 Suburban V - 8 Cyl 7.4L 454

Powermaster
  • 12si; 100 Amp; 75 Idle; 1V; OE Look; Chrome
  • Alternator; 12si; 100 Amp; 75 Idle; 1V; OE Look; Chrome;
  • Alternator
  • Product Attributes:
    • Amperage: 100 Amp
  • Features:
    • Most Popular Classic Look
    • 100 Plus Amps At Top End/75 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • Popular Upgrade For 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC K15 Suburban L - 6 Cyl 4.1L 250

Powermaster
  • 12si; 150 Amp; 100 Idle; 1V Pulley; Natural
  • Alternator; 12si; 150 Amp; 100 Idle; 1V Pulley; Natural;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC C15 Suburban V - 8 Cyl 7.4L 454

Powermaster
  • 12si; 150 Amp; 100 Idle; 1V Pulley; Polished
  • Alternator; 12si; 150 Amp; 100 Idle; 1V Pulley; Polished;
  • Alternator
  • Product Attributes:
    • Amperage: 150 Amp
  • Features:
    • Most Popular Classic Look
    • 150 Plus Amps At Top End/100 Plus Amps At Idle
    • One Unit For 1 Or 3 Wire Operation
    • Individually Dyno Tested with Proof of Performance Guarantee
    • High Output Replacement For Early 10DN/10SI/12SI Alternators
  • Powermaster has a variety of alternators available for various applications.

Additional Fitment Information:
Vehicle Block CC Engine CID
1977 - GMC K25 Suburban V - 8 Cyl 6.6L 400
Showing 1 - 10 of 22 products

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