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Founder, 1929-2014
Speedy Bill
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Small Block Chevy Billet Alternator Brackets

Small Block Chevy Billet Alternator BracketsSmall Block Chevy Billet Alternator BracketsSmall Block Chevy Billet Alternator BracketsSmall Block Chevy Billet Alternator BracketsSmall Block Chevy Billet Alternator Brackets
Small Block Chevy Billet Alternator Brackets

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What's in the Box

Rugged, hi-tech aluminum bracket with a polished finish. Attaches to front of cylinder head of S/B Chevy. Mounting hardware included. Fully adjustable. For use with short water pump.

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King Chrome GM One Wire Alternator, 65 Amp
SKU-91067101
                        

Streamline the engine compartment in your street rod or muscle car by eliminating excess wires with this King Chrome 1-wire alternator. Based on the GM Delco-Remy 10SI alternators, these 65-amp units are perfect for vehicles with few electical accessories. King Chrome alternator housings are hand polished to a high luster prior to applying the show-quality triple chrome finish.

This one wire alternator simply needs hooked up direct to the main battery lead or power source. Then the internal regulator picks up the available current and kicks the alternator into the charge mode at the pre-set voltage. 

  • Hand polished, triple chrome plated finish
  • Quick, easy hook-up with supplied instructions
  • Internally-regulated GM 10SI style alternator
  • Attaches to all popular GM alternator brackets
  • Direct replacement for most 1969-85 GM cars and light trucks
  • Excellent idle output
King Chrome GM One Wire Alternator, 100 Amp
SKU-91067102
                        

Streamline the engine compartment in your street rod or muscle car by eliminating excess wires with this King Chrome 1-wire alternator. Based on the GM Delco-Remy 10SI alternators, these 100-amp units are perfect for vehicles with added electical accessories. King Chrome alternator housings are hand polished to a high luster prior to applying the show-quality triple chrome finish.

This one wire alternator simply needs hooked up direct to the main battery lead or power source. Then the internal regulator picks up the available current and kicks the alternator into the charge mode at the pre-set voltage.

  • Hand polished, triple chrome plated finish
  • Internally-regulated GM 10SI style "one-wire" alternator
  • Quick, easy hook-up with supplied instructions
  • Attaches to all popular GM alternator brackets
  • Direct replacement for most 1971-86 GM cars and light trucks
  • 100 amp max output
  • Excellent idle output
Tuff Stuff Silver Bullet One Wire Alternators - 100 Amp GM V-Belt Pulley
SKU-9107139
                        

The Silver Bullet 1-wire alternators are 100% new construction with a distinctive billet fan and pulley for good looks and increased performance. They are a one-wire hook-up with ultra low cut-in regulator which charges from a idle up to highway speeds.

Fits GM mounts with V-belt pulley. 100 amp rating. Available in black powder coated or chrome finish.

Tuff Stuff Silver Bullet One Wire Alternator - 140 Amp GM V-Belt Pulley
SKU-9107140
                        

The Silver Bullet alternators are 100% new construction with a distinctive billet fan and pulley for good looks and increased performance. They are a one-wire hook-up with ultra low cut-in regulator which charges from a idle up to highway speeds.

Fits GM mounts with V-belt pulley. 140 amp rating. Available in black powder coated or chrome finish.

This alternator generates 80 AMPS at idle (750 RPM x 2.5 Pulley Ratio). 

Small Block Chevy Black Alternator Bracket
SKU-91667896
                        

These rugged, hi-tech aluminum alternator brackets feature a painted black finish. They attach to front of cylinder head of any Small Block Chevy with a short water pump. Mounting hardware is included.

  • Rugged, hi-tech aluminum bracket with a painted black finish.
  • Attaches to front of cylinder head of Small Block Chevy.
  • Mounting hardware included
  • Fully adjustable
  • For use with short water pump 
Powermaster 37293 GM 12SI 150 Amp Alternator, Chrome
SKU-25537293
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 150 amp with 90 amps at idle, and 125 amps at cruising speed

Powermaster 37293 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 47294 GM 12SI 150 Amp Alternator, Natural
SKU-25547294
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 150 amp with 90 amps at idle, and 125 amps at cruising speed
  • Black finish with fan baffle

Powermaster 47294 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 57294 GM 12SI 150 Amp Alternator, Black
SKU-25557294
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 150 amp with 90 amps at idle, and 125 amps at cruising speed
  • Black finish with fan baffle

Powermaster 57294 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 17294 GM 12SI 100 Amp Alternator, Chrome
SKU-25517294
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 100 amp with 70 amps at idle, and 90 amps at cruising speed
  • High quality chrome finish

Powermaster 17294 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 27294 GM 12SI 100 Amp Alternator, Polished
SKU-25527294
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 100 amp with 70 amps at idle, and 90 amps at cruising speed
  • Hand buffed, polished, and high colored for beautiful polished finish

Powermaster 27294 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 7294 GM 12SI 100 Amp Alternator, Natural
SKU-2557294
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 100 amp with 70 amps at idle, and 90 amps at cruising speed
  • Natural finish for stock appearing applications

Powermaster 7294 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

 

Powermaster 57297 GM 12SI 150 Amp Smooth Look Alternator, Black
SKU-25557297
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 150 amp with 90 amps at idle, and 125 amps at cruising speed
  • Black finish with fan baffle and custom Smooth Look

Powermaster 57297 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.

Powermaster 67293 GM 12SI 150 Amp Alternator, Polished
SKU-25567293
                        

Powermaster's most popular GM alternator fits most models, 1965-'85 with straight mount 6.61 inch bolt spacing. 

  • Works as 1 or 3 wire operation
  • Internally regulated
  • Pulley included, single groove
  • V-belt style
  • 150 amp with 90 amps at idle, and 125 amps at cruising speed
  • Hand buffed, polished, and high colored for beautiful polished finish

Powermaster 67293 Alternator Instructions (PDF)

Powermaster Alternator FAQ's (Link)

See the difference between the popluar alternators we offer by reading our tech article, GM Alternator Buying Guide (Link) and learn how to correctly install your new 1-wire alternator by reading our tech article, 1-Wire Alternator Conversion (Link).

Warranties

Powermaster's warranty is one year from the date of purchase on all street rod components, and 90 days for any component use for an off road or race application.  

Powermaster will provide all warranty service and technical support regarding warranty claims and inquiries directly to the purchaser to resolve any warranty claims or necessary technical support for warranty resolution.  Speedway Motors is not able to service, warranty, or replace any unit that has a warranty consideration.  As such, the component or components are to be returned to Powermaster and not to Speedway Motors.  

All customers service inquiries pertaining to warranty and defect claims are to be directed to Powermaster and not to Speedway Motors:


Powermaster Customer & Tech Support

Phone: (630) 957-4019

Email: tech@powermasterperformance.com


Any Powermaster product that is returned directly to Speedway Motors that is not in a new condition, and that is being returned for warranty replacement or refund consideration will be immediately forwarded on to Powermaster from Speedway Motors on behalf of the purchaser with no further action taken until received by Powermaster.  Powermaster will then will provide both the purchaser and Speedway Motors with final resolution as to the warranty claim.