Technical 241 hemi dowel pins

Anybody got head dowl pins for the 241 dodge hemi, I need to purchase 4

 

hot heads doesn't sell them, i had two and after checking with the machine shop, ended up making the other two

 

Find a friend with a lathe, They will make them, easy.

 

maybe long shank grade 8 bolts if same diameter..cut them down to fit

 

They just locate the head why not use steel roll pins?

 

Robert I’m a fan of the redram hemi and have two one in my 32 cabriolet and one waiting on the stand. I don’t have a measurement for the pins but can machine up a pair for ya. @silent rick might have the dimensions as well as he’s the redram aficionado..

 

McMaster Carr has just about any diameter and length steel dowel you could want.

 

that would be great if you could make me a couple the dim are length 1.0” the step is at .500” with the od of .375” and lower step of .310 by the way beautiful roadster, I’m putting the red ram in my 1936 pickup this winter

 

That would work , I just don’t have access to a lathe to cut the step in them beings it has a .060 “ step in it

 

Beautiful truck Robert and cool that going to run the redram.
Is this what you need? I can machine it up tomorrow morning.

 

...you can enlarge the hole in the head to match the block...

 

Yes sir that is exactly what I need, I can enlarge the holes in the heads but I’d rather put the factory installed size back in , the only difference in the old ones and your drawing is the end is rounded off some , can you make me 4 new ones ,I appreciate your help greatly, When you get done mail them to Robert Graves 450 Antioch church rd Alvaton ky 42122 and let me know what I owe you , thanks again

 

Thanks Gary for the info

 

They do not just locate the head.They keep the s head expanding and contracting to the same rate as the block

 

I wonder what is going on with that block. My 325 used straight 3/8” dowels. I have never ever seen a stepped dowel. The block was re-machined for something. I hope they did it right.

 

My DeSoto had the original stepped dowels in it,,,,,I was able to reuse them too .
Here are a couple of pics .

Tommy

 

The top is rounded like a bullet ,,,,,locates the heads just like new !

Tommy

 

It's been awhile since I've had early hemis, but aren't those dowels shorter than an inch?

Edit: Tommy's excellent pictures show that they really are long...

 

Huh?

 

They measure exactly 1” with 1/2 “ going in the block and the larger 1/2 “ end going in the head

 

Those look exactly like what’s in my 241 hemi, don’t know if od is the same but look alike

 

Gary on this one I have the small end is in the block and the large end is in the head, did you mean drill the block to .375 to match the hole in the heads ?

 

...yea, got the two ass-backwards... don't drill them free hand, use a drill press or a mag drill.

 

Will this help ya and made the small end .312 as .310 is an odd size and under by .002.
They are made of O-1 and had planned on just grinding them in on a surface grinder in a collet but had a setup in it yet..

 

Now that is real craftsmanship there,,,,,looks just like original .
Beautiful work !

Tommy

 

@Desoto291Hemi thank you just some quick work on the turret lathe.

 

That is beautiful work , they look factory original

 

Thank you and got your address and will send them your way.. it’s great to see another hemi hitting the road..