Hi all,

Can anyone give me the correct lengths for bottom and middle Hemi head bolts from bottom of hex to end of thread along with inner stud length. Also, were there different markings on the hex head for different years. Any help appreciated.

For the inners you will have to specify which block because there are different lengths.

This is what Ma Mopar says, but the bolts in the box with this sheet measured a hair shorter.

Don't forget those "bolts" aren't like regular bolts. They are over size under the head for about a 1/4" to locate the washer.

Yes many different head markings also.

Reason I'm asking all of this, am going to put them up for sale and just didn't want to describe them as OEM if they wern't. I've collected so much iron engine stuff through the years, I really can't remember where I got these but figure someone out there is needing some for a restoration. Anyway here is a pic of the different markings.

Anybody? BTW Rick, thanks for posting the measurements.

this can help for originality. https://www.mmcdetroit.com/Market_Place/Sect%202%20Assembly%20fasteners%207%201%202012%20CA.pdf

Wow, what an incredible amount of info...Thanks RT!!!