MELVIN

Folks,

My stock 427/390 water pump, crank, and altenator pulleys on my 502 will not keep the belts from squealing when Im WOT.

Can anyone suggest where I could get a set of deep groove pulleys for water pump,crank, and altenator. Cant afford a surpentine system

vettfixr

Try Paragon. They have most of the correct parts. http://www.corvette-paragon.com/

Smokehouse69

Give these guys a call, they have pretty good looking stuff, they might have an answer for you. http://www.zoops.com/product-listing.asp?ID=4&offset=24

gkull

I had trouble years ago when I first started making higher rpm motors. My fix was smaller diameter crank pulley.

MELVIN

The oly prob with those aftermarket sites is that they dont state if those pulleys are deep groove or not

Ive bought from Paragon before. If I do go thru them, what model engine should I order for that used deep groove pulleys?

vettfixr

I'm not an expert on this but I think some of the 327 hipo engines used the deep pulley. You could also check a few GM performance sites like Pace or Scoggin Dickie. I'm pretty sure I saw deep groove pulleys in the GM Performance Parts Catalog.

MELVIN

Fixr,

Got what I need, right in the GM perf catalog. I found a BB crank pulley. Ill go one peice at a time until squeal goes away: $60

By the way, parts seem to pretty reasonable. BB aluminum water pump: $115

vettfixr

I didn't have the catalog at work because they expect me to do stupid things, like my job. :lol: But I've gone through it at home and you can get some nice parts for reasonable prices. I got my balancer and flywheel through them for about the same price it would have cost me at the local discount parts store.

Flareside

Melvin, make sure that you're running the small belt that goes from the crank to the water pump. Without it, my 427 squealed at full throttle.

-Joe

MELVIN

Flare, not sure by what you mean by small belt from crank to water pump. I have the same belt from crank, water pump to alt. I beleive we have the same. Do you mean a smaller diameter belt?

If so, where do I get one. Ive been to NAPA, autozone, you nameit, same squeal. I didnt have this prob running my 427/390, but my 502 is really squealing the belt at WOT

Flareside

Melvin, if you don't have power steering, your 427/390 should have had 2 belts. One short (in length) belt that only connects the water pump and the crank (in the groove closes to the block). The second belt wraps around the water pump, crank, and alternator. Without both belts, they squeal.

Check out this picture:





I think I got mine from the Corvette Central catalog.

-Joe


[Modified by Flareside, 9:06 AM 12/17/2002]

MELVIN

Flare. Holy cow. I have no PS or AC, and I only have one belt! In your pics, the non ps 527 has two belts. Question: How does the second inner belt as shown fit and tighten? There is a no way to tighten it

Twin_Turbo

CV products makes very nice aluminum pulley kits.

Marck

pws69

How on earth would you expect to TIGHTEN a belt that only goes to 2 unmovable pulleys????? What IS wrong with that picture?

Flareside

Yep, it's a pain in the butt for sure, but it can be done. You have to loosen the bolts that hold on the water pump pulley, tilt the pulley, install the belt, then tighten the bolts.

Twin_Turbo

It's pretty easy, I ran a short belt between crank & waterpump because I removed the AIR stuff and had a spare one, it's quite usefull in case the other belt snaps at least you have drive to the water pump.

Marck