What Amp Alternator?

I'm need recommendations for a one wire Alternator going in 68 Charger. I will be using MSD Atomic Fuel injection and relays to run headlights off of the battery. Will I need a 60 amp or should I go with a 75 amp or higher?

Thanks in advance

Ron

I put a Tuff Stuff OEM replacement 100 amp alternator on my street and strip Duster due to the current draw of the race fuel pump and MSD 7 sereis ignition and so on. I figure it is way better to have alternator that will have room for future growth if I decided to add other electric parts onto the system later. I bought a 100 amp Powermaster single wire GM type for my race car, I ran a #8 wire form the alternator directly back to the + side of the battery and added a analog Volt meter inside to make sure it was charging while running The race car has a electric water pump, electric fan, electric fuel pump, race ignition, electric delay box, two big batterys and so on The race car has none of the original wiring so it was simple to add that #8 wire to the battery

Thanks,

I was looking on Summit and Tuff Stuff was one of the manufacturers i was considering. I had read that some ignition and fuel systems had problems if the voltage dropped too low.

Ron

If you have an atomic efi I would use a delco alt from powermaster.
About 94 amps at idle max and 140amps highway. If you have and electric fuel pump, fan, A/C you need the extra cushion.

Quote:

---

If you have an atomic efi I would use a delco alt from powermaster.
About 94 amps at idle max and 140amps highway. If you have and electric fuel pump, fan, A/C you need the extra cushion.

---

Thanks,
That will work. Can I use the original brackets with this alternator or do I have too modify anything?

Ron