ORANGEBROTHERS

Whats the belts size P/N that I should buy for my 454's PS without AC?

The PS belt on there now is as tight as it will get but its a tad long so it slips and screeches at higher RPM.

Easy Mike

Is there a length printed on your existing belt? If so, purchase a replacement about an inch shorter.

mysixtynine

I hate messing with belt lengths Ive made 5 trips in one night to help my father with his belts on his 55 chevy.

Take the belt with you and many places have a tool to measure it. You should try both 1/2 and 1" shorter to reduce the number of trips. Unless they wont let you return it.

Also, You may just need to add the additional rear belt as it could just be the crank pulley squealing with out the additional belt. Your water pump, power steering and alternator are being driven by one belt in your picture. Add the rear belt and see what happens as well. You don't want to over tighten the belts or you wear out your accessories bearings that way.

ORANGEBROTHERS

Ok Thanks! Its not the pulley cause i hit the belt with some belt dressing and it stopped making noise problem is thats not a solution, it will make noise again at some point.

Wardy

Quanta has the right belts for you. Looks like you also need the 1st track captive belt. That one is a real bitch to install. My WP pulley squealed at high RPM's till I got mine in.

ORANGEBROTHERS

It looks like I should be running a one belt from the crank to the fan and a separate belt from the fan / water pump to the PS pump and then a third belt from the alt to the PS. Is that correct?

Wardy

I think that's right. This is from my '72 AIM. I have AC, so I have an idler pulley for the captive belt and therefore a little slack to get it on. You're probably going to have to take the crank or WP pulley off to get the inside belt on. Not a whole lotta fun.

blackbeauty74

My 74 454 with no a/c with power steering looks just like the diagram that Wardy posted. I used to have that same problem until I added the belt that runs from the crank to the water pump. I used gates belts from Napa.

Frogday

And it is one fun belt to put on too.

TimAT

Numbers of the belts I'm using:

Dayco 15325 Crank to Water pump
Dayco 15445 Crank to water pump to Power Steering
NAPA 25-08003 Power Steering to Alternator

All these came out mid-range in the adjustment (except WP of course)
The pulleys on my 69 are all the original 427/435 parts, as are all the brackets.
Be careful of the length of the crank to WP belt. Too tight and it'll rip the bearings out of the WP== quick fast and in a hurry.

ORANGEBROTHERS

I'm having a hell of a time finding the crank to water pump belt what is the P/N of that belt? Please any ideas anyone? Thanks again!

Wardy

Like I said, Quanta has the belt you need (although their website appears to be down). The GM part number is 3952336, so you could try NAPA etc and they should be able to get a belt the right length.

ORANGEBROTHERS

Thank you! I was trying Quanta as well but you're right site is down.

joe@zip

Here is our 1972 Corvette 454 power steering belt

ORANGEBROTHERS

Thanks guys just picked up the three belts this morning went with Goodyear gatorbacks can't beat em at 10 bucks a pop. Will install tonight any hicups I'll let you know...

ORANGEBROTHERS

Done deal no more slipping that crank to water-pump belt was a PITA!

Took her for a test drive beautiful night she ran great!

ajrothm

I'm bumping this old thread up to see if anyone having any luck with different brands of belts besides GATES?

My 71 BB is also squealing the PS belt..... I have had two different GATES belts(7440/7435) on it, different lengths....I can get it REALLY snug, then run it a bit and it stretches after a few miles....be loose and squealing like a pig. Then I can re-tighten it and it seems to loosen up again....But even when it is guitar string tight it will squeal.

Mine only squeals when the electric fan kicks on and it pulls on the alternator....especially if I go around a turn(power steering load) while the fan kicks on....holy crap its loud and embarassing...It does this hot or cold. Belt dressing on the PS belt will keep it quiet for a couple hundred miles but it makes a mess and is not a correct fix. Pulley alignment is about 95% true and the belts fit well down in the pullies. Belts and pullies are new. I also have the dead man belt and idler tensioner in place and that belt is tight.

I am thinking of trying a different brand of belt, maybe something with a different side surface....