Hi folks, just installed my water pump and pulleys, and my alignment seems off,, the engine is a 383 crate engine from a local builder, they seem to line up close but not even. It almost seems if they were even they would touch on the edges. these pulleys and same size water pump came off a 307 that was in the car. the new water pump is a FlowKooler short. It was the same height as the one on the car before, however I never really took notice of the pulley alignment as I pulled the engine almost right away. It may have been this way all along. Is this ok to run like this? do I need to get a shim for the crank pulley? is there such a thing? HELP see pic
Thanks, Jeff
PULLEY PART #'S
UPPER 3900434AB
LOWER 44043BA

http://www.jeffbarnettproductions.com/Camaro/pulleys

You could shim the bottom pulley, if you want. Are you sure the plate on the water pump shaft was pressed on far enough ? I have seen them not on the correct distance. Also verify that both pulleys are for a short waterpump.

I'm not sure of anything at this point, I do know the water pumps seemed to measure the same, I hate to have to pull off the new one and stick on the old one and bolt it down and test it, like I said it may have been running this way with the 307 2 bbl that was in the car when I got it, it was an orignall 210 hp v8 and has the original intake and exhaust manifolds on the 307, I am assuming they reused the pulleys as well.. It seems if a can get them to line up they will clear you could barely slide a dollar bill between them, but they'll clear. does someone make a crank pulley shim kit? I need less than an 1/8", I would think.

If your working with what was originally a 307 ci. That motor didn't come out until 69. In 69 they used long water-pump configuration. Also the 307 ci had a much smaller damper than the one you currently have. Hence the problems. I would stay away from shims you could get vibration problems.
You might be better off using a long water pump set up. Do you have power steering?

i wouldn't put a long pump on a 68... big hassle
post the part number of the top pulley, bet pozzi can nail it down

I posted the part numbers to both pulleys in the first post, it is a non ps car, it has two grooves as I think it had smog. it seems all the acc. stuff is original 68, but who knows.. Do I need to post the part number someplace else?
Thanks
Jeff

i wouldn't put a long pump on a 68... big hassle
post the part number of the top pulley, bet pozzi can nail it down

How 'bout this one:
I have a 2 groove short water pump pulley, part # 3876846 DJ. It measures 2 5/8" OVERALL. It came off my short pump 68, but I don't think it "belonged there" Is it the one you need? or the one you have? I only used the rear groove and it lined up.

I believe all 307 pumps are considered "long" pumps. There appears to another issue between the location of the damper and the timing pointer. It MAY be related to the pulley alignment. It just doesn't "look" correct, but it could be just the brand of components involved. Thanks, Gary in N.Y.
P.S. As for the end result you want the pulleys slightly closer to each other. We send the units out the door within .005"/.006" of ALL pulleys. Many of my own customers ask us to square this item away while the unit is still on the engine stand. We actually went ahead years ago and made tooling specific to belt alignment. The longer the belt span, the more critical this dimension becomes as for keeping belts on. If they're not in close alignment you'll also end up with too much "heat" at the belts (belt-wear). Pictured here is one we recently set up. Very involved due to power steering AND block-plate.
http://i16.photobucket.com/albums/b28/GOSFAST/PES%20Engines/th_P1010001.jpg (http://i16.photobucket.com/albums/b28/GOSFAST/PES%20Engines/P1010001.jpg)

The dimension on your short water pump should be 5 5/8 " from face of pulley mounting hub to the mounting face to the block. There is no need to remove the pump to get this dimension. How thick are your mounting gaskets ? They should be paper thin. You should also install your alternator and compare, so you know which pulley is off. Aligning those two may not cure your problem. You must align all of them.

It can't be original 68 307 as they never made that engine size till 69. You need to give more info. What accessory's are you running? The problem is your running two different set ups together. Long water-pump pulleys with a short water-pump. You need to decide which way you going to run it one way short, or the other long. Personally I think the long water pump stuff is much easer to find. I don't think is a "hassle" at all. Especially if you have no accessories. But if you go "short" you will have to change both pulleys to 68 "short" The problem you'll run into is there wasn't allot of large damper cars in 68. So your looking for a SS 350 or a deep grove 302 Z/28 set-up. So you can choose your "hassle"

Hi folks, just installed my water pump and pulleys, and my alignment seems off,, the engine is a 383 crate engine from a local builder, they seem to line up close but not even. It almost seems if they were even they would touch on the edges. these pulleys and same size water pump came off a 307 that was in the car. the new water pump is a FlowKooler short. It was the same height as the one on the car before, however I never really took notice of the pulley alignment as I pulled the engine almost right away. It may have been this way all along. Is this ok to run like this? do I need to get a shim for the crank pulley? is there such a thing? HELP see pic
Thanks, Jeff
PULLEY PART #'S
UPPER 3900434AB
LOWER 44043BA

http://www.jeffbarnettproductions.com/Camaro/pulleys


Your upper pulley is correct. I don't know about the crank pulley. You can still buy the short pump pulleys new from Scoggin Dickey and others.

Mike

One other possibility. you may have a water pump made for a corvette.

The allignment problem is probably not the pulley's. I have seen water pumps that are manufactured or re-manufactured incorectly. If the bearing in the pump is not set to the proper installed depth, an allignment problem will ocurr.

For what it is worth. Converting to the long style water pump and pulley set up is WELL WORTH THE TIME! I have performed this conversion many times and it always works better if you are not concernined with originality.

The parts are available now to pull off the conversion cheaply.

Good Luck! :thumbsup:

For what it is worth. Converting to the long style water pump and pulley set up is WELL WORTH THE TIME! I have performed this conversion many times and it always works better if you are not concernined with originality.

The parts are available now to pull off the conversion cheaply.

Good Luck! :thumbsup:

We all have opinions I guess. personally, I don't have ANY wires draped across the front top of my motor. I even ran the vac advance line into the back of the carb instead of the front to keep it under the air cleaner and out of site.

No way I'd swap sides on a 68...

Now if your heads have accessory holes, a 70's to 82 vette alternator bracket will hang it on the left nicely, and get rid of that nasty header bracket.

Ok I check the measurements, and the pump is 5 5/8" from the mount surface to the pulley face, I will be calling the engine builder today to discuss what may be the problem.. I did find a site that sells crank pulley shims
http://www.northwestracing.com/catalog/search.php?search=DS-364-90+
however they seem to be really thin (.09) so not sure if this is a good route..
I really don't want to convert to a long pump as I want it to look somewhat "vintage" even though it is a 383. I'll post later when I hear what the builder has to say.
Jeff

Did you install your alternator or PS pump to see which is off ? Your alternator or PS pump should line up with one of those pulleys, then align the other one !

Yup, It's the crank, I mounted up my alt this morn, to double check, and spoke with my engine builder, who said he was sending me a special aluminum crank shim to solve the problem.. we'll see what happens