Hemi people - crank pulleys?

Are the lower crank pulleys for early Chryslers the same or interchangeable with 340's? How about any other Mopar pulleys? Any other makes that will bolt up to the stock dampner? I need something as small in diameter as possible. Single or dual groove.

Anyone running the Hot Hemi Heads lower pulleys that can be stacked? I could really use some dimensions on those pulleys.

Anyone ever run a spacer on their crank pulley to get things lined up just right? Was thinking of using one of HHH's lower pulleys and machining a spacer to the thickness I need. I'm thinking I may need about a 3/8" or 1/2" spacer. Still trying to figure out what my pulley options are though.

 

Me too. I need a 4-groove crank pulley to work with a 3-belt Cragar blower setup on a 392. Anybody got a stock Chrysler pulley that might work? If not, I was considering the Hot Heads pulleys as well and am going to call them later today to see what they say. I got the blower setup from Povertyflats, but the crank pulley was long gone. Hoping to just use a stock steel pulley if I can.

 

I think the stock steel pulley had multiple grooves (2 or 3), but they were all different sizes for different pulley ratios for the accessories. I think you're going to be using HHH's stackables.

 

Anyone?

 

I have a 4 groove with 2 different size diameter grooves . It needs a little work on it but itis useable.

 

That might work. I need the outer 3 to be the same diameter for the blower and the inner one for the accessories can be different and probably larger I might guess. Is that the way yours is?

 

I run a 340 harmonic balancer on my '51 hemi. I had to cut almost the whole "cup" off of the back of it to fit...but the stock hemi pulley just needed to have one hole slotted just a hair to fit the 340 balancer.

So, I would think that the reverse would be true, and a 318/340/360 pulley could be slotted to fit a hemi....or fit directly with a 340 balancer on there.

 

Okay! Good info!

I think I need to just start collecting lower Mopar pulleys until I find one that has the offset I need.

 

I'm pretty sure the aftermarket is "full steam ahead" on muscle era mopars...so there should be all kinds of pulleys available.

 

Yeah, there's some later Hemi pulleys out there... ugly, but they exist. The thing is, they use a longer water pump (I think). So all the crank pulleys look to be quite a bit longer than the early Hemi/Mopar stuff. I think I'm going to have to stay with the earlier stuff.

Anyone have pictures and measurements of their early small block mopar crank pulley??

 

I used a spacer about 3/16 on the paw 3 groove pulley to get it to align with the waterpump pulley.

I had to use HH singles because I need extra room for my fan so if any one need the pullies in the picture let me know.

 

YES! That does help! Thank you! Gotta' pic of that setup, by any chance? Thanks bro!

I'll check out PAW's pulleys too...

 

Oh... Jeff and 4Tford... what's the dimensions on those PAW pulleys? They don't tell you on the website...

Here's a link now that they actually HAVE an online catalog:
https://secure.pawengineparts.com/shoppingcart/showpage.cfm?catid=553

 

Cool thanks man! That would be much appreciated! Visually they look to be somewhere between 5-3/4 and 6-1/4, which would put me in good shape.

 

SB Mopar!!! $15 bucks!!! at B & M engine in Conroe TX. He does alot of ebay stuff.
I bought a 4 groove and split it to a 2 groove. (BTW I am using it with a HHH Balancer)

 

The diameter is 6 3/4 inches and I had to make a 1/4 inch spacer to match up with the fan pully. When I went to the HH singles I used one spacer for the fan pully that came with the pulley they are a better fit compared to the paw pieces.

 

Okay! Thanks!

Guess my picture dimensional guessing skills need some tuning...

Hopefully that's not too big. I have frame structure pretty close and that may lead to interference if I'm not careful with my pulley selection.

Time to measure...

 

Just measured... 6 inches is the most I can go and still have enough clearance for any up and down movement of the engine as well as being able to get the belt off...

...looks like I'll be exploring other options.

[QUOTEjj mack]
SB Mopar!!! $15 bucks!!! at B & M engine in Conroe TX. He does alot of ebay stuff.
I bought a 4 groove and split it to a 2 groove. (BTW I am using it with a HHH Balancer)
[/QUOTE]
Jimmy... what is the diameter of that SBM pulley you scored??

 

I just called Hot Hemi Heads and asked the dimensions of their stackable pulleys. They are 6-1/4" in diameter, 1-1/4" from mounting face/boss to outside face of the pulley and the mounting boss is 1/4" long.

So to use this pulley, I would have to raise my drive-line up about 1/4" and space the pulley about a 1/2" or so.

That would probably also mean that if I wanted to stack these it would put the v-grooves about 1" on center. My upper pulley is 3/4" on center. UH OH! That's not good. I guess I could go single groove on the water pump and just run the alternator off the crank pulley alone instead of looping it around all three pulleys. Any issues with doing that? I've seen it done, but always thought it was a better idea to go with all three pulleys.

 

I used a Fluidampr for the 392 had it double keyed. Then just use any smallblock mopar aluminum pulleys. You can build spacers as needed.

 

Make your own. Use my lathe. See you Saturday, then?

 

HA! Nice! That's tempting! Now I just need a 6" diameter chunk of aluminum...

...I knew I should have grabbed that chunk of aluminum round stock out of the recycle bin at my last job.

 

Jimmy... what is the diameter of that SBM pulley you scored??


7 1/2"

 

Sounds like MUCHO work & Brain Power to make **** that MoPar already figured out when the engines were stock !

I use the Factory Dampner & Chromed Hemi pullys, They fit correctlly, They are available, (have a large stackin the shed) and dont look like you adapted some ******** to the front of your Early Hemi.

Now if your running a Blower then id suggest the Late double keyed Fluiddampner or an equivelent for the street, But back in the Drag Days they just used a solid hub & blower pully.

SCOOTER, Why all the worry ?
Did you go with that Damn Chevy water pump conversion ?

This Hemi **** isnt really as difficult as this board makes it out to be.

 

OHHH!!! Bummer! That won't work. SHOOT!

Looks like either HHH pulleys or a custom made jobber is the answer.

So, any issue with running an early Mopar alternator off of just the crank pulley??

 

Had the same problem, I raised the motor mount to clear.

 

Hey man!

Yeah, I bought this engine pretty much complete and it had the SBC water pump already adapted to it. Since the motor is temporary until I get the other one built, I'm going to leave it as is and just figure out the pulley poop. I know, I know... they look like total ****, and I agree, but it's pointless to switch this one over to the stock water pump arrangement at this point. Plus... I don't think the stock crank pulley will fit because it's so large. You hate me now, don't you??

By the way... where do you get stock style stamped Hemi pulleys???? I haven't seen them anywhere???

 

I have an original 6", single groove.....