Harmonic Balancer Bolts & Washers Question.

[hemi71x]

I'v got a container full of Mopar engines harmonic balancer bolts and washers and no longer remember the engines that they belong to.
The big ones measure in at 2 1/4" inch, thread length, and the small ones measure in at 1 1/4" inch thread length.
Are the 3 small ones big block engine?
How about the longer ones?
When i had my 71 Hemi GTX i know that engine uses a very thick balancer, and i couldn't have taken 18 Hemi engines apart and saved all those bolts.
Then are the longer ones officially for small block engines?
Anyone care to look at the pictures and let me know.
Would like to put them up for sale when i find out officially what they're for.
Thank's a lot.
Jim V.
hemi71x

 

[mbaird]

Long are small block

 

[hemi71x]

Long are small block

Thank you.
I don't know why i have so many of them.
I never had anything small block.
426 Hemi and 383, and 440's.
I must have been busy at the wrecking yards, back in the dinosaur days, for some reasons or other.

Then, would the long ones interchange with the 426 Hemi engine?
Maybe that's why i pulled them off engines, and saved them?

 

[RustyRatRod]

The long ones will also fit the slant six. All the cranks were drilled for a bolt, but few used them. They are a nice addition for a hot slant six.

 

[oldkimmer]

I believe DC or MP was selling and recommending the sb bolt for for built big blocks. Kim

 

[townsend]

2 1/4 inch Bolt fits 67 thru the 1980's small block. #1821414
1 1/4 inch bolt fits 383,400,440 engines #1731525
426 engine uses same bolt as the small block
#1821414

 

[65 Dartman]

Likely 273s/slants in 64-66 used the long ones as that’s all I parted; however, I have one short one. No idea of what it came off of.

 

[hemi71x]

2 1/4 inch Bolt fits 67 thru the 1980's small block. #1821414
1 1/4 inch bolt fits 383,400,440 engines #1731525
426 engine uses same bolt as the small block
#1821414

That's the reason why i have so many of the long ones then.
When i had the 71 Hemi GTX, 4 speed car.