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Old 03-26-2011, 11:23 AM
2000ranger302 2000ranger302 is offline
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Default Ranger alternator switch to a mustang alternator for 302 question

I am in the process of putting a 302 in my ranger and i had a question about my alternator setup. The alternator that came out of my 3.0 Vulcan is a 95 amp alternator and will not bolt onto my 302 alternator bracket without extensive modification and putting a vbelt pulley on it. To save myself from doing fab work i was wondering if i could use an alternator designed for a mustang because it would bolt right up to my bracket and it would already have the v-belt pulley that i need on it. the only problem i have is that is only a 61 amp alternator vs. my 3.0 Vulcan alternator which puts out 95 amps just wondering if now that i don't have to run the fuel pump (because now the 302 fuel pump is mechanical) and engine computer if 61 amps would be sufficient and keep my battery sitting at the correct voltage. Thanks in advance. And sorry for the wording of the title, kind of confusing
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Last edited by 2000ranger302; 03-26-2011 at 12:12 PM.
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Old 03-27-2011, 10:08 AM
FireRanger FireRanger is offline
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Default Re: Ranger alternator switch to a mustang alternator for 302 question

You won't hurt anything trying. You still have to power lighting, wipers, blower, ignition, etc. I think you will be ok under power. But at idle, you might not get enough out of that. No alternator generates rated output at idle. Try and see what happens. If it falls short at idle, get another one. If not, you're good.
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Old 03-27-2011, 10:29 AM
pooleo pooleo is offline
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Default Re: Ranger alternator switch to a mustang alternator for 302 question

is the 302 you put in a modern engine with the all those extra components, or an old carb points motor. I would think for a newer 5.0 say from an explorer might need a stronger alt.

Maybe you can just change the pulley on it to put out more at lower rpms
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Old 03-27-2011, 04:49 PM
2000ranger302 2000ranger302 is offline
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Default Re: Ranger alternator switch to a mustang alternator for 302 question

Thanks for the replies, it is an old carb points motor so i'm just gonna go with it like you guys said and see what happens i'll also look into the pulley thing. Thanks again
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