I'm assembling a 426 for a friend. He gave me all the head bolts and washers. I thought the 1/2 washers were used only on the studs, but there are 16. Are these extras? HELP!!

Yes they where on the studs only originally, maybe he bought them not knowing the differences
I wouldn't worry about using all of them on his motor

Thanks!!

Also, good luck torquing the head stud nuts upside down in the lifter valley area. I had to buy a special 3/8" drive short handle torque wrench with swivel head to properly tighten those stud nuts. I would lend you mine if you lived closer.

Regarding the studs in the lifter valley - You could do like a few long time hemi builders told me...grab a normal box end wrench and crank down on em. Has worked fine for me.

I use a offset socket extension with a lever on it from the square 3/8 end with a box end on the other end( I have three of them,5/8,9/16 and 1/2 socket size) you need to do the math to correct for the extension though None of them are exactly the same length either

I did something similar. I found an old box end wrench in some of the old tools my grandfather had. It was a lot thinner around the outside and I was worried it would snap, but fit over nut and cleared the block. I used 1/2" drive torque wrench. Did the math to see what the indicated torque should be to put proper torque on the nut. Sort of pain to hold everything, but better than guessing.

I have the correct tool (torque adapter) to tighten them, I was just curious over the washers. thanks guys!!

Is it this one that is like a crowfoot? Is there a torque adjustment factor when using it, or are the published torque values include it's use??

Is it this one that is like a crowfoot? Is there a torque adjustment factor when using it, or are the published torque values include it's use?? [/quote
I couldn't remember the Crowfoot name That is the tool I use You should do the math to reduce the torque setting on your wrench so you don't over tighten the bolts or nuts you use that on
I may have it, the formula, written down in the shop, I copied that information out of a Motors or Chiltons manual years ago
If I can remember and find it in the morning I will try to remember to post that formula on here if some else hasn't already done it by then

I have the formula, never learned if the published torque needed to be adjusted if it was used.


Adding an adapter to a torque wrench

Length (L) = Effective length of the wrench as described below.
Dial Wrenches = The measured distance from the center of the square drive to the center ring or notch on the handle.
Micrometer Wrenches = The measured length from the center of the square drive to the center of the handle, with the wrench set at the desired torque reading.
Desired Torque (TA) = The torque value designated for the fastener with or without an adapter.

Added Length of Adapter (A) = The measured length from the center of the adapter drive to the center of the wrench square drive.
New Setting (TW) = The torque setting on the wrench allowing for the added length of the adapter. This reading will be lower than the desired torque.
Example: 250 ft. lb. Dial Wrench using a 2” long crowfoot adapter

L = Effective Length: 18.75”
Desired Torque = 250 ft. lb.
Length of Adapter = 2”
Result: 18.75" x 250 ft. lb.
18.75" + 2" = Pull Wrench to 226 ft. lb.

They aren't extras. It's not a wedge. Hemi's have washers. They should be for 7/16" not 1/2".

he is talking about the 7/16 scallop head stud washers that fit under the boss for the heads studs, not 1/2 inch head bolt washers, I think anyways

Yes thats exactly what I meant...they look like a crescent moon.

The washers under the rocker arm head bolts are a little thinner and also have a notch out of them. And then the eight lower head bolts have a thicker washer with them. What was getting at is all the head bolts have washers on a hemi.