The Stovebolt Site Forums The Shop Area Engine Shop Pulley for 235 Shortened Water Pump

Hello All,
I am at the tail end of a 216-235 Engine Swap. A machinist friend will be shortening the water pump shaft for me. Can anyone tell me where I can locate the correct short pulley? I have tried calling and emailing Jim Carters but cannot seem to get thru. They provide it with the water pump but they do not appear to sell them separately. Classicchevy.com has one but they are unable to tell me the groove width. The groove on the HB pulley is 5/8.
Thanks!

Patrick

I don't know about the width of Classicchevy's pulley, but the one I'm using matches the harmonic balancer's pulley and came with the pump I bought. Fan belt top width is 1/2", however.

Jon, thank you for your reply. Did you buy the water pump with the shortened shaft for the 235 swap?

Or, did you use the water pump relocator plate?

Jon,

Can you tell me where you purchased the water pump?

Thanks
Patrick

Patrick m I went to Jim Carters on Feb 2nd 21, they are closed due to covid but a sign said to call they would put parts on the loading dock for you. Tried-could'nt get thru,went and knocked the girl said go to the dock they will help you. Finally got my parts. Had driven way out of my way to go there! were nice once we conected !

Fixite7, thanks for letting me know!
Patrick

On the 216 pump that I converted to a bolt-on 2-groove pulley by machining the belt groove off the pressed-on pulley into a mounting flange, I used a pulley for a 302 Ford V8. It was necessary to re-drill the fan mounting holes to the proper bolt circle, but the pulley hub has plenty of room to do that.
Jerry

Hi Jerry,

That sounds like an interesting idea!.

Patrick

You stated you had a machinist friend so following Jerry's advice one can turn the V belt grooves off and weld on serpentine ones. Couldn't locate pics of final version but these give the general idea. Final ones have been trouble free.

[img]https://i.postimg.cc/gL6TZvHs/IMG-4179-2.jpg[/img]

[img]https://i.postimg.cc/5QwmJpmh/IMG-4180.jpg[/img]

That setup needs another idler to wrap the belt further around the crankshaft hub. The belt will slip and squeal every time the A/C compressor clutch engages with the limited contact on the drive pulley. Pulling the belt through the gap between the crank and the water pump and adding an idler will give all the pulleys at least 180 degrees of belt contact.
Jerry

Patrick M Did you know you can easily take the back off your water pump,press the hub back,cut the HARD shaft off (it's a bearing race) put your back on,you 've got it. use a cut=off wheel on the shaft. Found a sheave (pulley) at the swap meet 3724816 that is 7 1/8 inch that I think is close 2 inches deep, Have been watching for a sheave too. The trouble is may be too big in diameter ! maybe our number crunchers will tell what that part no. fits Also have another GM looking sheave that is smaller but no no. Have found that you push your hub back and stop just before it rubs on the pump body is close (thats with the 2 inch deep sheave I think ,been a while) I hate to spend 140$ just to get a sheave when I have a pile of those pumps.

coilover,
These will help immensely! Very much appreciated.
Patrick

fixite7
Thank you! I apologize for the late response. For the moment I am using a electric fan until I can acquire all the right parts. I appreciate the model# I'll keep an eye out.

Patrick

Anyone figure out the pulley part number? What do you need to press the shaft to the right size. The conversion pumps keep going up in price or are no longer available. Would like to see what the process involves.