Should I Get An Alternator With Higher Amps

O

other_shoe

Member

May 4, 2007

313

3

19

Nov 21, 2013

#1

• Nov 21, 2013

• #1

I think the alternator in my 67 C-code is dying and will need to be replaced.

Over the last year or so the car has been having problems with the new modern radio that uses a lot more electricity than the one from the early 1990s and I think the headlight conversion is drawing more too. What do you all think is a good target for a new alternator? 100 Amps maybe? Is there a down side to going with more than the original 65 Amps?

Thanks for any advice you all can give.

 

rbohm

Founding Member

Apr 12, 2002

6,698

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204

tucson,az

Nov 21, 2013

#2

• Nov 21, 2013

• #2

actually as i recall the stock alternator in your 67 is a 38amp unit, not 65. that didnt happen until the 70s. unless your stereo has a high powered amp along with the head unit, a 65amp alternator should be plenty for your application. now if oyu have that high powered amp, and an electric fan, as well as a number of other electrical items, then i suggest going to a 130amp 3g alternator.

 

68GT500KR_Vert

5 Year Member

Aug 21, 2006

353

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59

Virginia Beach, VA

Nov 21, 2013

#3

• Nov 21, 2013

• #3

I'm running 140 amp 1-wite alt - with updates like modern headlights, electric fuel pumps, stereos, phone chargers, etc it doesn't hurt to have the extra power. I actually have an extra Powermaster 140amp 1-wire alt kit, paid $225 for it - new in the box. I bought a complete ConceptOne pulley system, so I don't need it. Would sell it for $150.

 

mtaqua

Member

Oct 7, 2006

345

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19

Nov 22, 2013

#4

• Nov 22, 2013

• #4

68GT500KR_Vert said:

I'm running 140 amp 1-wite alt - with updates like modern headlights, electric fuel pumps, stereos, phone chargers, etc it doesn't hurt to have the extra power. I actually have an extra Powermaster 140amp 1-wire alt kit, paid $225 for it - new in the box. I bought a complete ConceptOne pulley system, so I don't need it. Would sell it for $150.

Click to expand...

140amp 1 wire too, fan, water pump, msd, radio, electric speedo, water injection, etc; extra power is nice if you plan on adding stuff later.

 

O

other_shoe

Member

May 4, 2007

313

3

19

Nov 24, 2013

#5

• Nov 24, 2013

• #5

Thanks for the advice. I ended up just going with a 65, which seems to have solved many though not all of my electrical issues. I probably need to replace the regular and instrument cluster voltage regulators too.