LS Style Alternator Upgrade for Small Block Chevy - Gen 1 SBC | Wiring + Fabrication Complete How-To

[@xaviermcfadden1]

Best Alternator swap video I’ve seen, very straightforward thank you sir

[@jord9308]

you don"t need a resistor inline if the ALT light is inline- the lamp has enough resistance. If you hook the "S" wire up to a 12V common junction instead of the alternator,it will compensate for voltage drop when accessories, lights, etc. are turned on. I have that same alternator and get 14.5V consistently wired that way. Nice bracket mod, Rob.

[@ronaldlewis6062]

Thanks for sharing! Got to love Chevrolet because you can retro fit about anything from the newer model to older ones!! GM only here!!

[@Mike_Neukam]

If you have trouble with belt slippage, I'd recommend upgrading to the serpentine setup found on the Vortec 4.3L, 5.0L, and 5.7L. I'm pretty sure that alternator will bolt right on. Grab both brackets and power steering pump with pulley and all hardware from a Vortec truck. Then grab a water pump with pulley and a crank pulley from a TBI truck. The crank pulley may actually be the same between the TBI and the Vortec. I don't remember for sure, but I know the TBI pulley works. Use the pressure fitting from your original power steering pump on the new pump. The Vortec setup can be used without air conditioning. It has a provision for an idler pulley on the left side bracket. The idler pulley is the same as the tensioner pulley. I don't remember if the idler needs a spacer or not so check belt alignment there if you get the brackets from a truck with A/C. You will need a slightly longer belt then the stock Vortec application because of the larger alternator case. If you want to upgrade your cooling fan, use the plastic fan from a 99 or 2000 on a TBI clutch. It pulls more air and it's quieter. Edit: I see that you have an electric fan.

[@ab-cd456]

Look up part #764-30705 from painless and read the instructions. You need a resistor inline with your wiring.

[@PaulsProTips]

I plan on doing an LS swap, but could use a better alternator today! I may explore this now. Thanks

[@baggedmazda666]

The newer alts are so much better that the old 1 wire. I believe they are 140-160 amps but the main benefit is when it starts making full amps on the 1 wire it’s up rather high in the rpm range where the newer style makes full amps almost right off idle. Huge benefit if you have a lot of power draw

[@marvinalancornell8275]

Us Boys down in the south [Dallas Tx]. Call that southern jigger rigg... You get my point "RIGHT" ????? Good job my youtube friend. Take care of you & yours...

[@helio7946]

Do you have the template for the 4in x 1in bracket you made?

[@scottgshomewrenching1352]

At the minimum it will put out 100 amps, you may want to consider upgrading the gage of wire running from the back of the alternator down to the starter.

[@ladaveednas7173]

Wow, actual good info but I Need to know how to change 6 volt to 12 volt. Any good idea's? Lmk.

[@dancharron7098]

hey you are doing the same thing I was considering for my race car 1970 Dirt track Camaro was thinking of using the power steering as well

[@michaelmenjares4721]

Hi my name is Mike do you have any more videos of you building your 350 small block that is what I'm putting into my S10 please let me know thank you

[@jonathanduke8295]

That's like all your spark good swap

[@LifelineKustoms]

with no 5v 128hz pwm on L pin its defaulted to 13.7 and it will do that with just the wire to the battery and nothing on the 2 pins

[@micquealbrooks9501]

Love your truck wanted if buy it

[@____j____a____c____k6466]

Where did you get the belt?

[@MrLangleylad]

Well done Rob

[@holeshotmafia5845]

Try it with nothing hooked up on the 2pin plug. 😎. Good stuff btw!

[@philippritchard7405]

It wouldn't charge. The regulator needs a constant source to refer to. The signal wire is necessary

[@terminatorx6766]

Can I do that swap with a 305?

[@wilsworkshop]

Who else cringed when he tossed the impact on the air cleaner lol. At work we have a stack of old bath towels we use to cover fenders and shiney stuff so we don't scratch it. The towels are cheap and easy to wash if they get dirty. Better then the rubber "fender blankets".

[@kiwianthony3878]

One of the wires goes to the battery

[@willzgn]

alternatorparts.com/. They have everything! You don't want to use the DR44, if the diodes go bad you have to replace the back cover. You need a AD244, the diodes are on a separate plate.

[@chavisboi]

Can it be any style Ls alternator?

[@skyler13827]

yes

[@Paulster2]

You realize you can clock the back independently from the front on GM alternators? Well, you can turn it in 1/4 turn increments, one from the other.

[@SPPTVarmy]

Yup

[@ronaldfondren9842]

Longer belt !!!!

[@georgioocean7629]

The downfall of a higher voltage alternator is you lose horsepower

[@b.c4066]

The alternator will only output amperage as needed. And the newer style salts are much more efficient, more stable output at idle, and basically better in every way. I seriously doubt the parasitic loss is half as much as the unit he is replacing.

[@silvernblackattach]

No. Not even. It is a demand based system. The only burden is the heavier alternator.