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Upgrading go 3G alt

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Frogger2662

Upgrading go 3G alt

Upgrading my charging system to 3g. Right now it is a 100 amp one wire gm.
My bracket system is a 1984 5.0 v belt set up. Looking at either a 130 or 150 amp. I will be running dual belts. What year model
altenator will bolt up?

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

BigBrother-84

Re: Upgrading go 3G alt

Check my thread "Big Brother is going 3G".

I am proceeding in couple of days, finally grabbed all required parts.

I asked a lot of questions, and guess what, sure it is that I'll have some more while swapping the alternators.

I'll post a lot of pictures while working on it.

Hoping this will help!

EDIT:
For the model, I followed Bill's advice.

Jeff / 1984 F350 Crew Cab 4x4/5.8L w351 4V/ T18/ D50 4.10 front/ 8' bed.
Restored 2019-2022.
Nicknamed «Big Brother 1984», due to its soooo-looong shape & nod to George Orwell's 1984 famous novel.

ArdWrknTrk

Re: Upgrading go 3G alt

Administrator

In reply to this post by Frogger2662

With low mount & V-belts you're going to want a 8.25" C-C alternator, so it can swing for adjustment.

This comes from the 3.8 V-6 found in 91-95 Taurus/Sable

If you have a later 5.0 EFI with the top mount alternator you need the 7" mount from a 3.0 V-6 (same cars and years)

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Frogger2662

Re: Upgrading go 3G alt

That what I was wanting to know. I have the double pully allready. Will I need the shim to go behind it to keep it from rubbing. Readong the document section it sounds like I will.

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

Gary Lewis

Re: Upgrading go 3G alt

Administrator

You might consider installing a load reduction control (LRC) voltage regulator before installing the alternator - assuming it doesn't have one. Most of the LRC regulators are white.

You can see how they work in this thread.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

Frogger2662

Re: Upgrading go 3G alt

In reply to this post by Frogger2662

I was reading about the lrc regulator. The link in the document section no longer works. At least not for me. Anybody have a current link to the regulator and shim?

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

Frogger2662

Re: Upgrading go 3G alt

I think I just found the info on the lrc regulator. Thanks
Just need to find the shim.

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

Gary Lewis

Re: Upgrading go 3G alt

Administrator

In reply to this post by Frogger2662

Did you try the links in the thread I linked to?

Gary, AKA "Gary fellow": Profile

ArdWrknTrk

Re: Upgrading go 3G alt

Administrator

In reply to this post by Frogger2662

The shim can be any thin 17mm spacer (depends on how far off your pulley is)
A 5/8 washer is usually sloppy enough to fit nicely.

Gary got the L&L double sheave pulley that came from my kit.
I think he turned the boss back to get more thread engagement, but mine has been fine for over a decade with a spot of loctite.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.

Frogger2662

Re: Upgrading go 3G alt

Thanks for all the info. Located everything online that I need. Just gotta pay for it and wait on it to come in.

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

Frogger2662

Re: Upgrading go 3G alt

In reply to this post by Frogger2662

Would this be the correct altenator and regulator?

https://www.amazon.com/Bosch-AL7508N-New-Alternator/dp/B000BZIJGQ#

1984 F150 Flareside
1992 5.0 with edelbrock 4 barrel
Comp XE264HR cam
GT40 heads
3.70 rear gear with T5 trans
Dual exhaust.

ArdWrknTrk

Re: Upgrading go 3G alt

Administrator

This post was updated on .

Looks like a grey regulator to me...
I don't see in the listing where it tells the model #, but that's definitely a 8.25" 130A 3G alternator!

No pulley installed, so you don't need to crack it off with an impact.

Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.