V Belt Suggestions - Fan spacing, pulley sizing, belt routing

[AuroraGirl]

So Im working on my truck and replaced alternator with a good one and the bracket which was belt and was either eating alternators or at least the bearings Im thinking and eating belts. The belt at the auto store matched to the same gates PN was 3 inches LONGER than a new one. Holy cow.

Anyway, i have a lot of SBC parts and I can set this up in many ways without buying much. I have a 2 belt crankshaft pulley, 2 belt WP, 2 belt alternator, and 2 belt ps pump.

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not the best pic for showing, but its 1 belt off crank, to the wp, to alt. with one belt off crank to ps pump.
the change is im putting a 2 belt alternator on in place of current one, can change other pulleys to do better/more

If I run 2 belts to anything, Id think ps pump would be best since at low speed the demand is highest? Should route straight from crank to PS? Or perhaps alternator around a WP? PS and alt?(Would require buying special pulleys lol) I guess, without considering spacing and alignment(I can do that, I will have to for my ps pump when i change the bracket) what would be the best way to route belts?

and I have a 3 blade fan. I also have a 7 blade fan. Are the fan clutches interchangeable and if so, whats better? The 7 blade fan is from a HD cooling application, so I would assume its louder?
And how far into the shroud should a fan sit? I Can move the fan in further if necessary, But incase it sat different I could fix that

 

[AuroraGirl]

@HotRodPC 3 or 7 blade fan? someones gotta have an opinion or thought to sharreee

 

[AuroraGirl]

Some pics because why not

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[AuroraGirl]

Found my next fan guys!

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[HotRodPC]

@HotRodPC 3 or 7 blade fan? someones gotta have an opinion or thought to sharreee

I'd toss the 3 blade fan. That 4 blade fan was used in the 60's pre fan clutch. I had one like that on my I6 65 230 cu in engine. In fact that looks like the I6 fan.

 

[AuroraGirl]

I'd toss the 3 blade fan. That 4 blade fan was used in the 60's pre fan clutch. I had one like that on my I6 65 230 cu in engine. In fact that looks like the I6 fan.

it DID fit the wp, but not sure if thats the same diameter. the pulley near it had a slightly smaller bore but same bolt pattern as wp. maybe for short wp?


I put the 7 blade on my clutch and im gonna eventually get a new clutch

@HotRodPC @bucket
done for today... just getting the ps pump lined up and then to belt routing. What do you guys thiink I should do? Based on pic, its hard to tell, I could run one belt on all 4 and then a second belt around crank, wp, and ps. the WP, crank, and PS are lined up together, the alternator is back by one belt, so the outside groove is usable.
Maybe line up alt with the rest and have 2 belts all around???
Isolate a single accessory? etc

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[AuroraGirl]

no one?

 

[SquareRoot]

I'd shitcan it all but hey, thats just me.

 

[AuroraGirl]

I'd shitcan it all but hey, thats just me.

Real men shitcan the LS serpentine and use all electric accesories with a chain driven generator to power everything

 

[SquareRoot]

Real men shitcan the LS serpentine and use all electric accesories with a chain driven generator to power everything

Who said anything about an LS?

 

[bucket]

Took me a minute to figure out what is going on here. To run two belts around the PS pump, you need to remove those spacers and install a 3-groove crank pulley.

Belt 1: Crank, water pump, alternator.
Belt 2: Crank, water pump, PS pump.
Belt 3: Crank, PS pump.

 

[AuroraGirl]

@bucket but could i just do 2 belts around every accessory assuming they were lined up?

 

[AuroraGirl]

Nevermind, I just realized my plan doesnt account for no iddler to keep tension on waterpump.
I was thinking with current setup, 1 belt alternator, ps pump, crank
1 belt crank, wp, ps pump
1 belt alternator and waterpump.

Can that be done? Or does the size difference cause problems?

 

[bucket]

Nevermind, I just realized my plan doesnt account for no iddler to keep tension on waterpump.
I was thinking with current setup, 1 belt alternator, ps pump, crank
1 belt crank, wp, ps pump
1 belt alternator and waterpump.

Can that be done? Or does the size difference cause problems?

You could probably do that, but I don't see how there would be any benefit.

 

[AuroraGirl]

2 belts driving each accessory? with the bulk load of ps pump not taking away from alternator as it would have its own belt to help turn when ps pump is under load.
then the ps pump would have a large surface area turning it, so would water pump