1965 chevy C10 pulley HELP for stock AC
 

Hello
I’m trying to get my truck in driving condition and restore the factory AC system. I’m having a heck of a time trying to find the correct pulleys for his truck factory AC truck. (This truck didn’t come with the correct pulleys) Does anyone have the pulleys or the correct GM # so I. An find these parts
Thanks
Pete

Re: 1965 chevy C10 pulley HELP for stock AC
 

I went through 20 pulleys before I found the correct ones.

Re: 1965 chevy C10 pulley HELP for stock AC
 

Hello
Thanks for response after a lot of research I think I have the GM part# for crank and water pulley.

I think these are correct but I’m not 100% sure. There is not a lot of info out there for stock pulleys for factory ac 1965 truck.
Single Groove pulley crank GM part# 3755820 I think it will work
Crank pulley GM part# 3831397
Water pump GM part# 3868451

Does anyone have a crank or water pump pulley for sale?

Thanks
Pete

Re: 1965 chevy C10 pulley HELP for stock AC
 

I also acquired a power steering pimp a while back from a Camaro. I’m hoping it will work.

Attachment 1966212
Attachment 1966213
Attachment 1966214

Re: 1965 chevy C10 pulley HELP for stock AC
 

For the crank shaft you need the single groove pulley # 3755820 and a two groove cast pulley 3876326 . Water pump is a 3 groove cast pulley # 3868451 and power steering pump pulley part number 3791943 . For the cast pulleys, these are truck only and are for Alternator Power Steering and AC using all three grooves on the crank pulley. The PS pulley is a special offset to work with the extended crank cast pulley. That pump should work. Brackets look right but that adjuster bracket is a later design .

Re: 1965 chevy C10 pulley HELP for stock AC
 

Heres the pulley , their description is incomplete. That pulley was used from 1963-1966 on our trucks with AC https://www.ebay.com/itm/1966-1972-C...IAAOSwNqxcPNHH

Re: 1965 chevy C10 pulley HELP for stock AC
 

Hello
I can’t thank you enough 60-66. I could not find anything on this set up and of course I am starting out with only single groove pulley 3755820 which I had for a while. I’m glad at least one pulley. I don’t have to buy. I am going to buy cast iron crankshaft pulley. 3876326. If anyone Knows where I can get water pump pulley 3868451 let me know. I noticed that power steering pulley is very $$$.

Re: 1965 chevy C10 pulley HELP for stock AC
 

Hello 60-66

I also have a fan spacer 3765386. I do believe this is the correct one. Do you know what is the correct fan for factory set up?

Thanks again
Pete

Re: 1965 chevy C10 pulley HELP for stock AC
 

The fan in my picture is the right fan, also had a 4 core radiator and a shroud.

Re: 1965 chevy C10 pulley HELP for stock AC
 

Im sure you could find one cheaper on here in the for sale section

Re: 1965 chevy C10 pulley HELP for stock AC
 

Like LT1 said , its a fixed 5 blade fan . But , theres several different styles of those also. Theres a round head rivet and a flat head rivet. You want the flat head rivet. Round head is pre 1964. Heres an original .

https://i270.photobucket.com/albums/...d/IMG_1084.jpg

Re: 1965 chevy C10 pulley HELP for stock AC
 

The spacer is the early part number 3765386 was changed to 3857041 and is correct for AC trucks