charging issues, March alt pulley.
Thread Starter
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
charging issues, March alt pulley.
i am having some charging issues with my march pullies and I was wondering if I put my stock alt pulley back on would that cause anymore problems or will if possibly "fix" it?
Thread Starter
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: charging issues, March alt pulley.
come on guys! someone HAS to know this?
Supreme Member
Joined: May 2006
Posts: 1,857
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From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: charging issues, March alt pulley.
if your march pulleys slow the alt down, then that could be the problem.. then again, it could be coincidence and your alt is dead..
Thread Starter
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: charging issues, March alt pulley.
Funny.....But it still doesn't answer my question.The alt is brand new as well as the battery.The car charges normally when I'm driving around but at idle the voltage drop considerably.I have to foot stall the car up to 1000 rpm's to get the alt charging again.So just for clairity if I put my stock ALTERNATOR pulley back on will this help my situation? Would this speed up my alt enough to work as normal?
Supreme Member
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: charging issues, March alt pulley.
this is the breakdown for your stock alt pulley to work..
stock alt pulley must be smaller than the march unit
march crank pulley must be stock size OR larger..
stock alt pulley must be smaller than the march unit
march crank pulley must be stock size OR larger..
Thread Starter
Joined: Apr 2004
Posts: 3,001
Likes: 62
From: Salt Lake City, Utah
Car: 1988 camaro "SS"/ 1991 305/T5
Engine: 383 LT1 in progress/LT1TBI 355 soon
Transmission: Probuilt 700R4 3600 stall/ T5
Axle/Gears: Moser axles, 3.42 Eaton Posi
Re: charging issues, March alt pulley.
Sooo...Since If I put my stock put Alt pulley back on and left the rest alone it would be ok right or I have to put BOTH my stock alt AND stock crank pulley back on for it to work? I already have the stock Alt pulley back on the car but It was to late to test it.
Supreme Member
Joined: May 2006
Posts: 1,857
Likes: 0
From: Maui, Hawaii
Car: 1984 Trans Am
Engine: broken 385sbc
Transmission: G-Force rebuilt T-5
Axle/Gears: Currie 9" Ford 4.30:1
Re: charging issues, March alt pulley.
if the stock alt works good, then you can leave the march crank.. if it still needs more rpm, then obviously the stock crank pulley is needed..
basically for the best results, you want the biggest crank pulley and the smallest alt pulley.. this will yield the fastest rpm at the alt which equates to charging at lower rpms..
basically for the best results, you want the biggest crank pulley and the smallest alt pulley.. this will yield the fastest rpm at the alt which equates to charging at lower rpms..
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