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What size are big block pulleys?

74sundance

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Hey guy's I went to Moparfest to day in search of a bunch of parts for my 1976 big block 400ci motor in a 1974 Plymouth Satellite. and found most of the stuff I needed but I'm, having a problem with 2 pulleys I got.The crank and water pump pulleys are hitting each other,I'm sure the A/C 4 grove crank pulley is ok but the Water pump pulley's diameter must be to big.Doe's any one know the size/s of pulleys I would need? I'm able to go back to Moparfest tomorrow if I get some answers today.Thank's in advance :)
 
most water pump pulleys i know of are 6 13/16 inchs diameter.
 
Hmmmmmmm?

As you can see the water pump pulley is way down in between the groove of the crankshaft pulley

rsz_hpim0707 (1).jpg

rsz_hpim0706.jpg
 
thats because you have the wrong crank pulley. you cant use a non AC top pulley with an AC crank pulley. the crank pulley you need has 2 grooves with the inside pulley having a smaller diameter. disregard the a/c compressor on the 440 below, thats not factory
 

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thats because you have the wrong crank pulley. you cant use a non AC top pulley with an AC crank pulley. the crank pulley you need has 2 grooves with the inside pulley having a smaller diameter. disregard the a/c compressor on the 440 below, thats not factory

I love the pic of the low mounted A/C compressor.
Did it work? What compressor did you use?
If this works and the parts are available I want it.
Thanks in advance
:icon_fU:
 
I love the pic of the low mounted A/C compressor.
Did it work? What compressor did you use?
If this works and the parts are available I want it.
Thanks in advance
:icon_fU:
Follow the link in Cranky's post, they sell the set up.
 
I ended up,putting the body panels on the car and selling it as is.I would have loved to finish this car but I had to bring my Sundance home and just didn't have the room.
 
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